yes, I use POP3. I’m a layman, my son had set up the devices for me and so I’ll wait until his next visit. The following information from the Swisscom website confuses me in this context: “External email accounts: In the future, for security reasons, you will no longer be able to integrate external email accounts via IMAP.”

Thanks for the suggestion! For me alone there are >200 emails per device. It appears to be a Swisscom breakdown that probably doesn’t just affect us

My wife and I received all emails (especially the deleted ones) from September 17th, 2024 on the iPhone and on the desktop