[MlMt] Disable Saving of Sent Mail

[Benny Kjær Nielsen]

On 23 Apr 2016, at 21:48, Josh Fishburn wrote:

> I use FastMail, which I have set to do its own saving of sent mail. Is 
> there a way to turn this behavior off in MailMate for my "Sent Items" 
> folder so that I don't get duplicates of every sent message in there?

No.

> I'd rather let FastMail's servers handle this.

It's a tricky problem, because this would mean that MailMate should 
permanently delete its copy of the message just after sending it. 
Performance-wise it doesn't make much of a difference. Either the 
message is downloaded from “Sent Messages” or it's uploaded to 
“Sent Messages”. The only way to avoid this is for MailMate to 
automatically detect the sent message duplicate and keep its own local 
copy and “just” map it to the online copy. It might not be that 
trivial though, e.g., Gmail adds headers to the sent mail which means 
that they are no longer strictly identical.

As a workaround you can setup deletion of sent messages yourself. Add a 
rule to the “Sent Messages” mailbox which deletes any message which 
has a “Relayed” header (Relayed exists). This is a virtual header 
which only exists in MailMate and not in the FastMail copy.

-- 
Benny