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<p dir="auto">On 24 Apr 2016, at 5:25, Benny Kjær Nielsen wrote:</p>
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<p dir="auto">On 23 Apr 2016, at 21:48, Josh Fishburn wrote:</p>
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<p dir="auto">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?</p>
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<p dir="auto">No.</p>
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<p dir="auto">I'd rather let FastMail's servers handle this.</p>
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<p dir="auto">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.</p>
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<p dir="auto">It looks like FastMail does the same - when I compare the duplicate messages, one has detailed headers, the other includes only the original message. The deduplication seems to "just work" in Apple Mail (perhaps it's doing something like what you describe above). Thanks for the detailed explanation of the issue - I had assumed it was less complicated than that.</p>
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<p dir="auto">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.</p>
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<p dir="auto">Thanks, Ill give that a try.</p>
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<p dir="auto">-- <br>
Benny</p>
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