The provider has to save the headers to forward them to you; if it doesn't then ...

		andreareina on Dec 29, 2020 \| parent \| context \| favorite \| on: Email providers – which one to choose? The provider has to save the headers to forward them to you; if it doesn't then it's altering your emails. I've never heard of providers deleting messages upon being accessed through IMAP. Are you thinking of POP3?