1 Introduction

1.1 Features
1.2 Documentation Set
1.3 Example Program
1.4 Installation
1.5 Uninstalling
1.6 Pricing
1.7 Updates

2 Library Overview

2.1 Dynamic Link Libraries
2.2 Keycode
2.3 Win32 STDCALL and DECLSPEC
2.4 Error Display

3 Compiler Issues

3.1 Versions of Win32 COBOL
3.2 Compiling Fujitsu COBOL Programs
3.3 Compiling Micro Focus COBOL Programs
3.4 Other Win32 COBOL Programming Languages

4 Example Programs

4.1 Connectionless Example Programs
4.2 SMTP Example Programs
4.3 POP3/IMAP Example Programs
4.4 IMAP-Only Example Programs

5 Revision History

1 Introduction

The SMTP/POP3/IMAP Email Engine for COBOL (SEE4CB) library is a toolkit that allows software developers to quickly develop SMTP and POP3/IMAP email applications in COBOL.

The SMTP/POP3/IMAP Email Engine (SEE) is a component library of functions providing direct and simple control of the SMTP (Simple Mail Transport Protocol), POP3 (Post Office 3), and IMAP 4 (Internet Message Access Protocol) protocols.

A straightforward interface allows sending, receiving and parsing email, including multiple MIME base64 and quoted-printable encoded attachments, over any TCP/IP network (such as the Internet). Knowledge of Winsock and TCP/IP is not needed.

The SMTP/POP3/IMAP Programmer's Manual provides information needed to compile and run programs in a COBOL programming environment.

The SMTP/POP3/IMAP Email Engine for COBOL component library works with Win 32 Fujitsu COBOL and any other COBOL (such as Micro Focus COBOL) capable of calling the Windows Win32 API. SEE4CB includes numerous example programs that demonstrate SMTP and POP3/IMAP functions used to build mail applications using the SEE4CB library.

A Win32 DLL (Dynamic Link Library) is provided. SEE4CB runs under all versions of Windows (Windows 95, Windows 98, Windows ME, Windows 2000, Windows 2003, Windows NT, Windows XP, Windows Vista and Windows 7). A Win64 DLL is available for Win64 programming languages. The SMTP/POP3/IMAP Email Engine SDK DLLs (SEE32.DLL or SEE64.DLL) can also be used from any language (C/C++, .NET, Visual Basic, VB. NET, VBA, Delphi, Visual FoxPro, PowerBASIC, Xbase++, dBase, etc.) capable of calling the Windows API.

When comparing SMTP/POP3/IMAP Email component library against our competition, note that:

• SEE4CB is a standard Windows DLL and is much smaller than a OCX or ActiveX control.
• SEE4CB does NOT depend on ActiveX or similar "support" libraries.
• SEE4CB is fully threadable.
• The SEE4CB functions can be called from applications not capable of using controls.

MarshallSoft also has versions of the SMTP/POP3/IMAP Email Engine library for C/C++ (SEE4C), Visual Basic (SEE4VB), Delphi (SEE4D), PowerBASIC (SEE4PB), Visual FoxPro (SEE4FP), Visual dBASE (SEE4DB), and Xbase++ (SEE4XB). All versions of the SEE library use the same DLLs (SEE32.DLL or SEE64.DLL). However, the examples provided for each version are written for the specified computer programming language.

The latest versions of SMTP/POP3/IMAP Email Engine (SEE) can be downloaded from our web site at

    http://www.marshallsoft.com/email-component-library.htm

Our goal is to provide a robust SMTP/POP3/IMAP email component library that you and your customers can depend upon. A fully functional evaluation version is available. Contact us if you have any questions.

1.1 Features

Some of the many features of the SMTP/POP3/IMAP Email Engine component library are as follows:

• SMTP client for sending email.
• POP3 client for receiving email.
• Send email with optional MIME or Quoted Printable attachments.
• Send email with inline embedded HTML, GIF, TIF, JPG, BMP and Rich Text attachments.
• Get the number of messages on the POP3/IMAP email server.
• Get the header lines from any email on the POP3/IMAP email server, without reading the entire email.
• Delete any email on the POP3/IMAP server without reading it first.
• Copy any email on the POP3/IMAP server without deleting it.
• Check for the number of emails on the POP3 server.
• Receive any email on the POP3 server including MIME attachments.
• Remove contents of attachments before writing to disk.
• Forward Email.
• Decode email from a file
• Run up to 128 independent WIN32 threads concurrently.
• Can send email to mail addresses on a distribution list.
• Supports SMTP (ESMTP) and POP3 authentication.
• Set return receipt; add TO, CC, BCC recipients
• Set minimum and maximum wait times for server response.
• Supports ISO-8859 (European character sets) and UTF-8 (16 bit character sets) messages.
• Can specify custom Content-Types; add custom header fields
• Includes over 50 functions for SMTP and POP3/IMAP control.
• Dozens of switches provided to control how email is sent or received.
• Supports setting priority via X-Priority header field.
• Use with GMAIL servers with (free) STUNNEL proxy server.
• Start and terminate external programs from within an application.
• Is fully thread safe .
• Implemented as a standard Windows DLL, which will work with all versions of Windows.
• Includes 32-bit (SEE32.DLL) DLL. A SEE64.DLL is available.
• Works with Win 32 Fujitsu COBOL and any other COBOL (such as Micro Focus COBOL) capable of calling the Windows Win32 API
• Does not depend on support libraries. Makes calls to core Windows API functions only.
• Works with Windows 95/98/Me/NT/2000/2003/XP/Vista/Windows 7.
• License covers all programming languages.
• Can be used with any program (in any language) capable of calling Windows API functions such as Visual C++, Visual C++ NET, Visual FoxPro, Delphi, Xbase++, dBASE, Visual Basic, VB.NET, Access and Excel.
• Is compatible with "Managed Code".
• The evaluation version is fully functional.
• Royalty free distribution (no run-time fees) with your compiled application

Registration includes one year of free updates and technical support.

1.2 Documentation Set

The complete set of documentation consists of three manuals in Adobe PDF format. This is the first manual (SEE_4CB) in the set.

• SEE4CB Programmer's Manual (SEE_4CB.PDF)
• SEE User's Manual (SEE_USR.PDF)
• SEE Reference Manual (SEE_REF.PDF)

The SEE_4CB Programmer's Manual is the language specific (COBOL) manual. All COBOL programming issues such as compiling, compilers and example programs are discussed in this manual. Read this manual first.

The SEE User's Manual (SEE_USR) discusses email processing as well as language independent programming issues. Purchasing and license details are also provided.

The SEE Reference Manual (SEE_REF) contains details on each individual SEE function.

The online documentation can be accessed on the SMTP/POP3/IMAP Email Engine for COBOL product page at:

    http://www.marshallsoft.com/see4cb.htm

1.3 Example Program

The following example demonstrates the use of some of the SMTP/POP3/IMAP Email for COBOL component library functions:

     *> attach SEE
     CALL "seeAttach" WITH STDCALL USING
        BY VALUE     NBR-CHANS     *> number of channels
        BY VALUE     SEE-KEY-CODE  *> See KEYCODE.CBI
     END-CALL.
     *> connect to SMTP server
     DISPLAY "Calling seeConnectTo()..."
     CALL "seeConnectTo" WITH STDCALL USING
        BY VALUE     IS-ZERO       *> channel
        BY REFERENCE SMTP-SERVER   *> SMTP server
        BY REFERENCE EMAIL-FROM    *> sender's email address
        BY REFERENCE IS-ZERO       *> no Reply-To header
     END-CALL.
     *> send email
     DISPLAY "Calling seeSendEmail()..."
     CALL "seeSendEmail" WITH STDCALL USING
        BY VALUE     IS-ZERO       *> channel
        BY REFERENCE EMAIL-TO      *> recipient
        BY REFERENCE IS-ZERO       *> no CC list
        BY REFERENCE IS-ZERO       *> no BCC list
        BY REFERENCE EMAIL-SUBJ    *> email subject
        BY REFERENCE EMAIL-MSG     *> text of message
        BY REFERENCE IS-ZERO       *> no attachment
     END-CALL.
     *> close and release SEE
     CALL "seeClose" WITH STDCALL USING
        BY VALUE     IS-ZERO       *> channel
     END-CALL.
     CALL "seeRelease" WITH STDCALL
     END-CALL.

In the example program above, seeAttach is called to initialize SEE and then seeSmtpConnect is called to connect to the SMTP mail host. The SMTP server host name and your email address are required, while the "Reply-To" entry is optional.

seeSendEmail is then called, passing the addressee lists. The primary addressee is provided in the "To List". The CC ("Carbon Copy") lists additional recipients, as does the BCC (Blind Carbon Copy) list. The subject contains the email subject line. The message text is next. If it starts with the '@' symbol, it is considered the name of the file containing the email message. Lastly, the filename of any ASCII or binary attachment is specified. All fields, except the first, in seeSendEmail are optional.

After returning from seeSendEmail, the seeClose function is called to close the connection to the SMTP server. Lastly, seeRelease is called to perform SEE termination processing and release the Winsock.

1.4 Installation

1. Before installation of SEE4CB, your COBOL compiler should already be installed on your system and tested.
   
   
2. Unzip SEE4CB52.ZIP (or SEExxxx.ZIP where xxxx is your Customer ID) using any Windows unzip program.
   
   
3. Run the installation program, SETUP.EXE, which will install all SEE4CB files, including copying SEE32.DLL to your Windows directory. No Windows system files are modified.
   
   
4. Compile and run SEEVER.CBL to test your installation. The remaining example programs must be edited with your email parameters before compiling.

Note that the Windows registry is not modified.

1.5 Uninstalling

Uninstalling SEE4CB is very easy. SEE does not modify the registry.

First, run UINSTALL.BAT, which will delete SEE32.DLL from your Windows directory, typically C:\WINDOWS for Windows 95/98//2003/Me/XP/Vista/Win7 or C:\WINNT for Windows NT/2000.

Second, delete the SEE project directory created when installing SEE4CB.

1.6 Pricing

A developer license for SEE4CB can be purchased for $115. Purchasing details can be found in Section_1.4 "How to Purchase" in the SEE User's Manual (SEE_USR.HTM). Also see INVOICE.TXT provided with the evaluation version or order directly on our web site at

    http://www.marshallsoft.com/order.htm

Registration includes one year of free updates.

1.7 Updates

When a developer license is purchased, you will be sent a set of registered DLLs plus a license file (SEExxxx.LIC, where xxxx is your Customer ID). The license file can be used to update the registered DLL's for a period of one year from purchase. Updates can be downloaded from

     http://www.marshallsoft.com/update.htm

After one year, your license must be updated if you want to be able to download updates. The license can be updated for $30 if ordered within one year of the original purchase (or previous update). Between one year and three years, licenses can be updated for $55. After three years, a license can be updated for $75.

Note that the registered DLL's do not expire; however, the ability to download version updates expires after one year. Refer to the file UPDATES.TXT located in the /SEE4CB/DOCS directory for more information.

2 Library Overview

The SMTP/POP3/IMAP Email component library has been tested on multiple computers running Windows 95/98/Me/XP/2003/Vista/Windows 7 and Windows NT/2000.

The SEE4CB library has been tested with Fujitsu COBOL and also works with Micro Focus COBOL

The SETUP installation program will copy the SEE32.DLL to the Windows directory and copies the SEE4CB files to the directory specified (default \SEE4CB). Three sub-directories are created, as follows:

     DOCS - All documentation files
     APPS - All example code
     DLLS - All DLL's

2.1 Dynamic Link Libraries

The SMTP/POP3/IMAP Email component library includes both Win16 and a Win32 dynamic link library (DLL). A DLL is characterized by the fact that it need not be loaded until required by an application program and that only one copy of the DLL is necessary regardless of the number of application programs that use it. Contrast this to the traditional static library that is bound to each and every application that uses it at link time.

An important advantage that DLL's have over other "popular" library formats such as VBX or OCX is that DLL's are callable by all Windows applications. Since DLL's are the building blocks of the Windows Operating System, they will not be replaced by a "newer technology".

2.2 Keycode

The SEE32.DLL has a keycode encoded within it. Your keycode is a 9 or 10 digit decimal number (unless it is 0), and will be found in the file KEYCODE.CC. The keycode for the evaluation (shareware) version is 0. You will receive a new keycode and a set of new DLL's when registering. The KEYCODE is passed to SeeAttach.

If you get an error message (value -74) when calling SeeAttach, it means that the keycode in your application does not match the keycode in the DLL. After registering, it is best to remove the evaluation version of the SEE32.DLL and SEE16.DLL from the Windows search path or delete them.

2.3 Win32 STDCALL and DECLSPEC

SEE32 is written in ANSI C and is compiled using the _stdcall and _declspec keywords. This means that SEE4CB uses the same calling conventions and file naming conventions as the Win32 API. In particular, function names are NOT decorated. There are neither leading underscores nor trailing "@size" strings added to function names.

The SEE32.DLL functions may be called by any Windows application program capable of calling the Windows API provided the proper declaration file is used.

2.4 Error Display

The error message text associated with SEE error codes can be displayed by calling seeErrorText. Each sample program contains examples of error processing.

Also see the file seeErrors.txt for a list of all Winsock and SEE error codes.

3 Compiler Issues

3.1 Versions of Win32 COBOL

The email functions in SEE32.DLL can be called from any program which is capable of calling the Windows Win32 API. In order to call the email functions, the proper syntax for calling external Windows DLL's must be used. Unfortunately, this syntax is different for each COBOL compiler.

For Fujitsu, the function interface file is SEE32.CBI. For Micro Focus, the interface file is SEE32.MFI.

3.2 Compiling Fujitsu COBOL Programs

The Fujitsu COBOL Project Manager is used to compile and link the example programs. When linking, remember to include SEE32.LIB in the list of files to link.

Alternatively, the FCL.BAT file can be used to invoke the Fujitsu compiler and linker from the command line. Be sure to copy COBOL.CBI from the Fujitsu COBOL97 directory to the directory which contains the example programs.

     FCL AUTHEN
     FCL BCAST
     FCL GETRAW
     FCL HTML
     FCL MAILER
     FCL MAILER2
     FCL READER
     FCL READER2
     FCL SEEVER
     FCL STATUS
     FCL MPARTS
     FCL FORWARD
     FCL POP3RD
     FCL GmailMVP

3.3 Compiling Micro Focus COBOL Programs

We do not have Micro Focus COBOL, although we have many customers who use SEE4CB with it.

In order to compile for MicroFocus COBOL, examine the Micro Focus version of the SEEVER program (SEEVERMF.CBL). If you would like the complete example set for MicroFocus COBOL, send an email to support@marshallsoft.com, and we will be glad to send it to you.

3.4 Other Win32 COBOL Programming Languages.

If you develop an interface file for other COBOL languages, we would really appreciate a copy. Email the interface file, along with any example programs that you have converted, to support@marshallsoft.com.

If you are programming in another Win32 COBOL language, we may already have the necessary interface file. Let use know which COBOL you want to use.

4 Example Programs

Each example program, with the exception of SERVER.CBL, must be edited with your email parameters before compiling. For example, to change the "mail.hiwaay.net" below to "mail.mine.com", the following changes must be made:

     000360  01  SMTP-SERVER.
     000370      05  FILLER PIC X(15) VALUE "mail.hiwaay.net".
     000380      05  FILLER PIC X VALUE X'00'.

to

     000360  01  SMTP-SERVER.
     000370      05  FILLER PIC X(13) VALUE "mail.mine.net".
     000380      05  FILLER PIC X VALUE X'00'.

Note that the length was changed from 15 characters to 13 to accommodate the shorter server name.

Before writing your own programs, compile and run several of the example programs. SMTP programs send email. POP3 programs read email.

4.1 Connectionless Example Programs

The SEEVER example program does not require a connection to an SMTP server.

4.1.1 SEEVER

The first example program SEEVER displays the SEE library version number and registration string. It does not require a connection. See SEEVER.CBL for Fujitsu or SEEVERMF.CBL for MicroFocus.

Compile and run SEEVER first. It will verify that SEE32.DLL can be found at runtime and that your keycode is specified correctly.

4.2 SMTP Example Programs

There are eight SMTP email example programs. SMTP programs send email.

4.2.1 AUTHEN

AUTHEN is an example program that connects to an SMTP server using SMTP Authentication. You must connect to a SMTP server which allows authentication.

AUTHEN.CBL must be edited with your email parameters before compiling.

4.2.2 BCAST

The BCAST example program emails the same message (BCAST.TXT) to a list of addresses taken from the file, BCAST.EML, containing one email address per line. Along with the SMTP server and your email address, the file containing the email message to send must be created along with another file containing the list of recipients. See EMAIL.LST for an example.

BCAST.CBL must be edited with your email parameters before compiling.

4.2.3 HTML

The HTML example program connects to an SMTP server and emails an HTML file (HTML.MAI) containing inline graphics (IMAGE1.GIF and IMAGE2.GIF). The graphics files are attached to the HTML email message.

HTML.CBL must be edited with your email parameters before compiling.

4.2.4 MAILER

The MAILER example program emails a message, including an optional MIME attachment. The MAILER.CBL program must be edited with your email parameters before compiling. Note that <> brackets are required around all email addresses.

MAILER.CBL must be edited with your email parameters before compiling.

4.2.5 MAILER2

The MAILER2 example program operates like MAILER, except that it runs in direct mode rather than indirect mode like MAILER.CBL. The primary use of direct mode is to return control to the calling application code as the email is being sent for the purpose of displaying progress. See the SMTP/POP3/IMAP User's Manual (SEE_USR) for details on direct mode.

The MAILER2.CBL example program must be edited with your email parameters before compiling.

4.2.6 ISO8859

The ISO8859 example program sends a text message and subject line that are ISO-8859-1encoded in Italian. The recipient's email client will be able to display the email message using the specified ISO character set provided that it is capable of identifying ISO-8859 MIME parts (such as MS OutLook).

ISO8859.CBL must be edited with your email parameters before compiling.

4.2.7 Forward

The FORWARD example program forwards an (undecoded) email to a new recipient.

FORWARD.CBL must be edited with your email parameters before compiling.

4.2.8 GmailMVP (Gmail Via Proxy)

The GmailMVP (Gmail Mailer Via Proxy) example console mode program emails a specified email message connecting to a GMAIL account via the (free) STUNNEL proxy server, which is started and terminated without user intervention. See gmail.txt in the DOCS directory or http://www.marshallsoft.com/gmail.htm for more information on STUNNEL.

4.3 POP3 Example Programs

There are four POP3 email example programs. These examples read email.

4.3.1 GETRAW

The GETRAW example program downloads a specified email message without decoding it. This program is used to see what the email looks like on the server.

The GETRAW.CBL program must be edited with your email parameters before compiling.

4.3.2 STATUS

The STATUS example program reads the number of email messages waiting on your POP3 email server, and displays the "DATE:", "FROM:", and "SUBJECT:" header fields from each email.

The STATUS.CBL program must be edited with your email parameters before compiling.

4.3.3 READER

The READER example program can read email, including multiple MIME attachments, from your POP3 email server, deleting each email after being read.

The READER.CBL program must be edited with your email parameters before compiling.

4.3.4 READER2

The READER2 example program operates like READER, except that it runs in direct mode rather than indirect mode like READER.CBL. The READER2.CBL program must be edited with your email parameters before compiling.

The READER2.CBL program must be edited with your email parameters before compiling.

4.3.5 POP3RD

The POP3RD example program uses the seePop3Source function to specify an (undecoded) email message file to be decoded.

The READER2.CBL program must be edited with your email parameters before compiling.

4.4 IMAP-Only Example Programs

There are two IMAP-only example programs. These examples access the IMAP server.

4.4.1 ImapFlag

The ImapFlag example program tests the manipulation of flags on the IMAP server. It reads, sets, and deletes certain flags for the specified email message on the IMAP server.

IMAP flags are:

     \Seen      Message has been read
     \Answered  Message has been answered
     \Flagged   Message is "flagged" for urgent/special attention
     \Deleted   Message is "deleted" for removal by later EXPUNGE
     \Draft     Message has not completed composition (marked as a draft).
     \Recent    Message has arrived since the previous time this mailbox was
                selected. ["\Recent" may be fetched but not stored]

The ImapFlag.CBL program must be edited with your email parameters before compiling.

4.4.2 ImapSrch

The ImapSrch example program tests IMAP search capability.

See ImapSearch.txt or http://www.marshallsoft.com/ImapSearch.htm for a complete list of all IMAP search strings.

Example search strings as passed to seeImapSearch():

     SEEN
     SEEN NOT ANSWERED
     FLAGGED SINCE 1-Feb-2008 NOT FROM "Smith"
     LARGER 10000 NOT SEEN

The ImapSrch.CBL program must be edited with your email parameters before compiling.

5 Revision History

The SMTP/POP3/IMAP Email Engine DLL (SEE32.DLL) is written in ANSI C. All language versions of SEE (C/C++, Delphi, COBOL, PowerBASIC, FoxPro, dBase, Xbase++, COBOL, and Fortran) use the same identical DLL.

Version 1.0: June 8, 1998.

• Initial release

Version 2.0: [COBOL version not released]

Version 2.1: [COBOL version not released]

Version 3.0: [COBOL version not released]

Version 3.1: September 1, 1999.

• Support ISO-8859-1 (Q or B) encoded attachment filenames.
• Support ISO-8859-1 (Q only) on subject line
• SEE-SAVED-TO-MSG parameter added.
• "+OK" line not written to email message file.
• Added seeExtractLine function.

Version 3.2: February 28, 2000.

• Added QUOTED-8859 processing (QUOTED-8859).
• Can decode printed quotable attachments!
• seeGetEmailLines can use internal memory.
• Added SEE-WRITE-TO-LOG to seeStringParam.
• Added SEE-GET-ATTACH-NAMES to seeDebug to get attachment filename list.
• Ability to reset the SEE-SET-HEADER header string to "nothing".
• Improvements in dynamic memory usage.
• Added GETRAW, READER2, and MAILER2 example programs.
• Added seeCommand function.

Version 3.3: December 11, 2000

• seeGetEmailLines can use internal memory.
• Added SEE-COPY-BUFFER [seeDebug] to copy internal buffer.
• Added SEE-WRITE-TO-LOG [seeStringParam] to allow user to write to LOG file.
• Added SEE-GET-ATTACH-NAMES [seeDebug] to get attachment filename list.
• Ability to reset the SEE-SET-HEADER [seeStringParam] to "nothing".
• Added seeCommand function.
• Allow TIC marks (0x27) in VerifyAddressChars().
• Added SEE-GET-LAST-RECIPIENT to seeDebug.
• Added seconds to date string on outgoing email.
• Attachment name is saved when attachment file is closed.
• Added SEE-PATH-DELIMITER to seeIntegerParam().
• Added seeAbort function.
• VerifyFormat rejects "@domain" and "name@" addresses.
• Added "SEE-SET-FROM" so can change "From:" header at runtime.
• Delimiters (CR/LF) sent with command in one network transmission [seeWriteLine].
• Added QUOTED-USER, SEE-SET-CONTENT-TYPE, and SEE-SET-TRANSFER-ENCODING.
• Added SEE-ATTACH-DELIMITER and ability to specify different attachment filename in email.
• Added SEE-ADD-HEADER to seeStringParam.
• Added SEE-WRITE-BUFFER to seeDebug (see seeGetEmailLines)
• Added SEE-ENABLE-IMAGE to send GIF/TIF/BMP/JPG images inside email.

Version 3.4: August 14, 2001

• Supports "AUTH LOGIN" and "AUTH CRAM-MD5" (SMTP) authentication.
• SmtpResponse accepts response line without message.
• Supports ISO-8859-1 (base-64) encoding on subject line.
• Supports "APOP" authentication (POP3 servers). *
  
  
  

Version 3.5: April 25, 2002

• Added support for "AUTH PLAIN".
• Recognize multiple AUTH methods on one line, such as "AUTH PLAIN LOGIN CRAM-MD5".
• Added SEE-FORCE-INLINE -- attachments are inline text rather than base64 encoded.
• Added SEE-SET-ATTACH-CONTENT-TYPE -- user can specify content type for attachments.
• Added SEE-ATTACH-BASE-NUMBER -- attachments named "1.att", "2.att", etc.
• Don't close socket (seeClose) if socket is already closed.
• NBR-CHANS set to 128 for Win32.
• SEE-RAW-MODE reads complete lines rather than buffers.
• Added seeQuoteBuffer() -- used to prepare ISO-8859 headers.
• Will continue with sending DATA (rather than return error) if have at least one recipient.
• Call seeStatistics(Chan, SEE-GET-LAST-RECIPIENT) to get # recipients accepted by server.
• Added SEE-IGNORE-REJECTED to ignore error returned if recipient is rejected.
• Added BCAST example program.

Version 3.6: May 5, 2003

• Added seeSendHTML() function.
• Looks for multipart/related as well as multipart/alternative message parts.
• Added SEE_HTML_CHARSET (CHARSET_US and CHARSET_8859)
• Generic multipart boundary definitions handled (not just alternate, related, ...)
• CR/LFs preserved in multiline "Subjects:" headers.
• Handle case where "MIME-Version: 1.0" statement does not proceed all other MIME statements
• MAX_BUF increased from 2048 to 8192 for WIN32
• Virtual socket # written to log file when created (vsGetSocket) & released (vsCloseSocket).
• Write to email file if "MIME-Version" was not seen.
• vSock released properly in seeClose.
• Terminating ALT boundary not written if HTML file is passed from memory (not a file)
• Alternate text in seeSendHTML can be file (if prefixed with '@')
• Added seeEncodeUTF8 and seeDecodeUTF8 functions.
• Delimiters separating email addresses and pathnames changed to a semicolon.
• Added ISO_8859, WIN_1252, and WIN_1255 character set types.
  
  
  

Version 3.7: February 18, 2005.

• Terminating ALT boundary not written if HTML file is passed from memory (not a file).
• Alternate text in seeSendHTML can be file (if prefixed with '@')
• Added seeEncodeUTF8 and seeDecodeUTF8 functions
• AddrDelimiter and PathDelimiter changed to ';' (semicolon)
• Added QUOTED_WIN_1252 and QUOTED_WIN_1255.
• User headers written even if no subject
• Corrected problem: User Content-Type wasn't being sent if no quoting
• Added SEE_HIDE_HEADERS -- overrides any conflicting flags
• Fixed problem with "Filename=" extraction.
• Replaced OF_READ|OF_SHARE_DENY_WRITE with OF_SHARE_DENY_WRITE in _lopen
• Filename added to SEE_CANNOT_CREATE & SEE_CANNOT_OPEN error messages.
• Multi-line subject headers supported in seeGetEmailFile.
• ReadMsgLine uses Allow8Bits to decide if it should quote or not
• Added SEE_SET_DEFAULT_ZONE
• Increased buffer size for challenge string in authenticated SMTP connections.
• Added WriteToLog(), WriteClientTempToLog(), and WriteToLastLog() to centralize log writing.
• Nulls are replaced by spaces in all incoming data.
• Added support for "=?US-ASCII?B?" encoded filenames
• Fixed problem quoting line starting with '.' and having non-ASCII characters.
• Fixed SMTP problem when attaching large number of files (seeWriteSocket,seeWriteLine, seeWriteString).
• Added IgnoreErrorStatus (default TRUE) that skips socket error check in STATE_CONNECT
• Fixed problem with Content-Type prefix (set by SEE_WRITE_CONTENT_TYPE).
• Scan subjects & filenames for "big5" encoding like iso-8859
• Only one of TO, CC, and BCC must contain a recipient.
• Maximum text line length default increased to 1000.
• Added SEE_REPLACE_WITH_COMMAS to override replacement of delimiters with commas.
• SEE_FILE_PREFIX parameters set base for attachment file prefixes.
• Added seeAttachmentParams function.
• Added ISO8859 and MParts example programs.

Version 4.0: August 23, 2006.

• Always an error if "relay", "gateway", or "not local" is in the text of the servers response, regardless of SEE_IGNORE_REJECTED.
• Forwarded header lines written to message/rfc822 (attachment) file.
• Each POP3 message optionally saved to disk in raw (undecoded) format in seeGetEmailFile.
• Added function seeForwardEmail().
• Added function seePop3Source().
• Maximum internal buffer size increased from 8 KB to 16 KB.
• Alternate boundaries w/o enclosing quotes are supported.
• FORWARD and Pop3Read example programs added.
• Added function seeByteToShort
• Added function seeShortToByte
  
  
  

Version 5.0: June 6, 2008 (Win32 Version only)

• Added seeSetErrorText.c example program
• Added LoadLib.c example program.
• Added IMAP capability. IMAP-only functions are:

1. seeImapConnect : Connect to IMAP server.
2. seeImapFlags : Get, set, or delete message flags.
3. seeImapSearch : Search for messages with specified flags.
4. seeImapMsgNumber : Gets message numbers from buffer filled by seeImapSearch.
5. seeImapSelectMB : Selects IMAP mailbox.
6. seeImapDeleteMB : Delete a mailbox.
7. seeImapCreateMB : Create a new mailbox.
8. seeImapRenameMB : Rename mailboxes.
9. seeImapCopyMBmail : Copy messages from selected mailbox to specified mailbox.
10. seeImapListMB : List all available mailboxes.

• Added ImapFlag and ImapSrch example programs.
• Pass NULL for filename to seePop3Source / seeImapSource to revert back to server processing.

Version 5.1: June 17, 2009

• Fixed code for IMAP_SEARCH_MSG_COUNT in seeImapMsgNumber
• Appended CR/LF to text returned by seeGetEmailUID
• Fixed problem with STATE_POP3_DELETE (call exiting via STATE_POP3_DELETE_OK)
• Consider TAB's as ASCII characters (TABIsASCII=1) [bld 6]
• Added EnableHeaders to enable/disable writing of headers.
• Don't write blank line after headers (in STATE_SMTP_BODY) if EnableHeaders = 0
• Write the # bytes written to mail file in the log file.
• Never write boundaries to the email file.
• Fixed bug: seeGetEmailCount works with all IMAP mailboxes (not just InBox)
• Added seeStartProgram and seeKillProgram to start/terminate external programs.
• Fixed problem with blocking mode so connect timeout works.
• Added seeSmtpTarget that writes SMTP output to a file.
• Fixed problem with seeSendEmail (w/ attachment) after forwarding email.

Version 5.2: May 4, 2010 (Win32) version

• Added seeSleep function (for languages not having a native Sleep call).
• The HELO command passes the computer name rather than its IP address.
• Bug Fix: All handles closed before memory blocks are freed.
• Bug Fix: Multiline "To:" header preserved in incoming email.
• Bug Fix: seeSmtpTarget now always closes files.
• Bug Fix: seePop3Source now always closes files.
• Bug Fix: Multiple IMAP response lines now handled properly by seeCommand.
• Added UTF8 character set support (CHARSET_UTF8).
• Added check for "MX lookup failure" when reading incoming mail.
• Added check for "Invalid MX record" when reading incoming mail.
• Changed IMAP list command argument default from ~/ to "" "*"
• Added SEE_SET_IMAP_LIST_ARG to seeStringParam (sets IMAP list command argument)
• Added seeReadQuoted function: reads a file and quotes the contents as it writes to a buffer.
• Added "Buffer overflow" error code.
• Added QUOTED_ISO_8859_2 to seeIntegerParam for sending ISO_8859_2 encoded emails.
• Added SEE_GUT_ATTACHMENTS to seeIntegerParam to remove contents of incoming attachments.