Notice: Although the software is freeware, it is donationware. Consider making a donation to support development.
Universal Mailer solves certain issues when you send emails. It can remove ATT00001.htm file, format messages with attachments correctly, inline images and offers the option to change the default font for outgoing mail messages.
Universal Mailer can correctly format outgoing email messages when enabled. This ensures that they will remain the same format even after Exchange EWS filtering.
The plugin runs in background and doesn't interfere with your work. All you have to do is set the default font for outgoing email messages and continue writing your emails as normal. Universal Mailer will check your email and make any necessary changes before you hit the Send button.
Version 3.0 (build 19):
Note: Now requires OS X 10.11 or later