On 16 Apr 2021, at 19:02, Charlie Clark wrote: > I occasionally see e-mail for a smart mailbox in my inbox, when it's not > supposed to be. Switching folders generally resolves this. I don't use Gmail > but, as long as nothing is being moved, I don't think it should matter. > > I have seen race conditions where rules to move mails in both MailMate and > FairEMail on my phone both want to do the same thing and this definitely can > lead to duplicate mail.
Eventually, I solved the mystery. The duplicate messages have different Msg IDs, which made me suspicious. Hence, I add the "Source Mailbox" to my list view and found out that the duplicate emails had different source Mailboxes. The duplication showed up because I used "All Messages" (which include all source mailboxes) and not only to "Inbox" (which is only the Inbox mailbox from Gmail) as a parameter to the setting "of the following mailboxes." And the root cause was that a CRM system I use created a new Gmail mailbox for keeping track of email communication. This mail duplication effect is an excellent example of several side-effects forming a situation not intended at all but still possible to achieve. -- Robert M. Münch Note: The .ASC attachment contains a digital PGP signature of this email. It can be used to check that this email is from me and was not changed since I wrote it. Hinweis: Das .ASC Datei enthält eine digitale PGP Signatur dieser Email. Mit dieser kann überprüft werden, dass diese Email von mir geschrieben und seit dem nicht verändert wurde.
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