E-Mail, in a format used by some traditional Internet standards, is one method commonly used for communication over computer networks. (For some other ways of delivering electronic messages, see online chat programs. The E-Mail systems more commonly used with terminal connections section may also have some information.
This software is meant to be able to handle E-Mail on the Internet, generally meaning that it supports standard communications protocols.
Sendmail is for operating systems that are designed to be similar to Unix.
D.J. Bernstein's qmail works for several platforms that are designed to be similar to Unix.
From the main page: this is “an alternative to the widely-used Sendmail program.” “Postfix attempts to be fast, easy to administer, and secure. The outside has a definite Sendmail-ish flavor, but the inside is completely different.”
Apparently this does not have a Windows port: a guide at http://andrewbevitt.com/2007/06/28/postfix-under-windows/ has information on using Postfix in Windows, but the method is to use a virtual machine.
From the Calomel.org page about OpenSMTPD: “Its goal is to be a secure mailing daemon without the licensing restrictions of Postfix and without the added complexity of sendmail.”
This is software by Microsoft.
Before Internet usage became used or even understood by much of the general public, enthusiasts of computer usage would often use E-Mail provided by a “bulliten board system”. For further information about some software used to accomplish this, see the section on terminal-based software. Some BBS software supported a standard called QWK. The *.QWK files would contain new messages and the file could then be sent over the modem. The end user could then be offline (and not using up the phone lines for the BBS or the end user) while reading E-Mails and writing responses that could then be uploaded as a different *.QWK file.
SLMR was a popular piece of software for using interacting with mail offline with *.QWK files. Version 2.1a's file date was January 2, 1992, as seen on the Simtel archives (according to the copy of SLMR 2.1a shown on eunet.gb mirror). The documentation noted that on January 6, 1992 (which would be just a few days later), SLMR would become to properly to Mustang Software, Inc. SLMR 2.1a's licence says, “Do not send payments to us for use of SLMR. If you like the program you can either continue to use it in unregistered form or you may contact MSI for a Test-Drive copy of OLX, SLMR's new product derivative.” This would allow commercial usage, unlike OLX.
This was a popular piece of software for interacting with mail offline with *.QWK files. Here was its license: “Off-Line Xpress Test-Drive is licensed for individual personal use and evaluation for an unlimited time. Use and evaluation by businesses, corporations or individuals in a commercial venture is limited to 60 days, after which time the REGISTERED version of Off-Line Xpress must be purchased or the use of Off-Line Xpress Test-Drive must be discontinued.”
OLX has been sold by Mustang Software to Santronics, along with other Mustang Software products such as the “WildCat!” BBS software (which has since been renamed to “WINServer” and to “Wildcat! Interactive Net Server”).
Therefore, the following hyperlink points to a file that is deemed to be authentic: OLX-TD (OFF-LINE XPRESS v2.1 TEST-DRIVE) (obtained from Santronics).
http://processlist.com/info/olx-td.html suggests the file size is normally a larger 228,665 byte file. Such a file has been located and seems to be created using an older version of Yoshi's LHA program. ftp://ftp.simtel.net/pub/simtelnet/msdos/mailnews/olx21-td.zip ftp://ftp.mpoli.fi/pub/software/DOS/OFFLINE/OLX-TD21.ZIP SOTL.org had: File listing of area 33 which required a free registration which includes OLX-TD.EXE. This hasn't yet been verified as authentic.
Off-Line Xpress (OLX) is currently available as version 3.x for Windows. Older releases include OLX-TD 2.1, and the product's original name of Silly Little Mail Reader (which was meant to be abbreviated as SLMR and pronounced as Slimer).
Here are some potential downloads that may work well: ftp://ftp.simtel.net/pub/simtelnet/msdos/mailnews/slmr21a.zip