Quote:
Originally Posted by OtinG
You are correct in that Mail won’t delete emails from my GoDaddy POP3 account. I have to periodically use the GoDaddy login to delete them via my GoDaddy account. A PITA. Mail does nothing more than download new emails from this account, and it doesn’t do that very well across my various devices. With the IMAP account I could delete email on one device and Mail would delete it across all the devices connected to that account, but POP3 accounts don’t have that ability. However, I’m a bit annoyed that emails which I manually delete from any device don’t seem to always get deleted, perhaps because they were backed up on iCloud before the deletion. Thankfully this only seems to be an annoyance when I try to set up a new device from the backup of a previous device. I’m guessing that any emails that were backed up somehow stay in the iCloud backup and during a recovery they get pushed back onto the device. Apple should flag deleted emails for deletion from subsequent backups, but apparently they don’t.
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I suspect in this case, the mini 5 is just re-downloading everything within the last x days from your GoDaddy account because it doesn't know you already deleted those emails on your Pro 9.7.
I've got the Mail app set up for Manual Fetch so it only starts downloading emails when I actually open the Mail app. At least for Gmail (IMAP), my email list is always empty when I first open the Mail app after an iCloud or iTunes restore.
You can go here to see the size of app data backups and even choose which apps should be backed up to iCloud or not:
Settings -> Apple ID -> iCloud -> Manage Storage -> Backups -> This Device
I expect the mini 5 will serve you very well for years to come but just in case you need to do a restore in future, probably best to delete the email directly via GoDaddy before doing a restore so your new device doesn't re-download emails deleted using other devices.