That delete bug doesn't happen for me with current evolution.
The biggest problem I have is the composer window often isn't exactly the same as the sent mail (especially for plain text mail) when it comes to whitespace and quoting. Enabling the Outbox feature is a good workaround as it lets you see the mail before sending it, and you can adjust the mail until it is correct.
The biggest problem I have is the composer window often isn't exactly the same as the sent mail (especially for plain text mail) when it comes to whitespace and quoting. Enabling the Outbox feature is a good workaround as it lets you see the mail before sending it, and you can adjust the mail until it is correct.