1. current version is 4.4.1, try upgrading

 2. Instead of sending all messages at once, try opening the outbound queue, highlighting each message one at a time, and sending them individually.  Once you discover the problem message, open it.  It's possible your  antivirus decided it didn't like the outbound message and deleted part of it.

We are using Pegasu Mail version 4.31. There are multiple users and we use it over network. And each users access their mailboxes through different machines. Now Pegasus is crashing when one such user is trying to send out mails, from every machine.

As he is clicking to send all queued mails it is showing the following error :

" Pegasus mail for Windows has encountered a problem and needs to close. We are sorry for the inconvenience.
And the box contains 3 options
1) Debug
2) Send error report
3) Don't send "

So one has to click on Don't Send and Pegasus closes.

Please help, an early response is appreciated.