Poseidon Mailer 

version changelog:

v 1.1.0 | 25 March 2020
  • [*] Added full unicode support, Poseidon Mailer is now compatible with emails written in any language.
  • [*] Fixed email body being empty when using HTML Format and adding attachment
v 1.0.9 | 22 October 2019
  • [+] Message Variables have been added. You can view them from the View menu.
  • [*] Now it is possible to customize Sender address and/or name individually.
  • [*] Now it is possible to multiselect and delete some recipients from the recipients list.
  • [*] Fixed 100% CPU on Invalid License error.
  • [*] Minor GUI improvements
v 1.0.8 | 13 July 2019
  • [+] Added option in main menu to select TLS mode
  • [*] Better TLS handling and compatibility with more SMTP server/ports
  • [*] Fixed: TLS error when connecting to some ports
  • [*] Fixed: unable to disable automatic update check
v 1.0.7 | 07 July 2019
  • [+] Added automatic update check on start
  • [+] Added “Check for updates” button (in main menu)
  • [*] Better multi-screen support
  • [*] Fixes on sending encrypted emails using TLS/SSL protocols
  • [*] OpenSSL DLLs updated with new versions
  • [*] Other minor improvements and fixes
v 1.0.6
  • [+] Added attachment, now it is possible to add attachment file. Any file type supported.
  • [*] Minor fixes

 v 1.0.5

  •   [*] Sending mail now performed on dedicated thread
  •   [*] Performance improvement on mail list loading time
  •   [*] Fixed updater unicode/ansi bug
v 1.0.3 
  • [*] Updated SLL libraries, and other minor updates

v 1.0.2

  • [*] On some computers with particular locale formats online check failed; now fixed.

v 1.0.1

  • [*] Fixed “Connection closed gracefully” error.

v 1.0.0

  • First version to be released.
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