RE: Migrating GMail to Dovecot using imapc

In all fairness here, Gmail/Outlook play by their own rules and people just accept them because it's free.

Try sending a spam message that Gmail sends you, back to them and see what happens.

It is even worse, they just accept emails with stat=Sent and then delete emails without notifications. I am currently trying to get the EU to take such behaviour into their market abuse cases.