Background: We are sending emails to a developer reporting whether a plugin update/creation was successful or whether an error happened. It would be good to keep a copy of all sent emails. This would allow us to reproduce what the platform did when a developer reports a problem like this: http://forum.piwik.org/read.php?9,120677,120776#msg-120776
Here it would be very good to know whether our platform sent an email re "not possible to tag same version" or not. In theory it should but we cannot tell for sure.
We could maybe also resolve this outside of the application but we do not have permission to access corresponding logs and saving the file should be easy to implement
I just wanted to implement it and noticed we already do log when we are sending an email.