[Users] Duplicate messages in IMAP Sent folder

[Paul]

Hi,

In the network log commands sent to the server by Claws Mail utilise a >
character, and messages coming from the server use a < character.

We see in the log that Claws says "IMAP> 50 UID COPY 284229 Sent", that is
copy one message. There server responds saying that it copied 2 messages:

> [2020-09-13 18:17:21] IMAP> 50 UID COPY 284229 Sent
> [2020-09-13 18:17:21] IMAP< * 1 EXISTS
> [2020-09-13 18:17:21] IMAP< 50 OK [COPYUID 2 284229 291801] UID COPY
> completed

It is not clear where UID 291801 comes from, other than from the server.

with regards

Paul