IPhone mail using 700Mb with no accounts

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While trying to clear up space on my iPhone, I deleted all email accounts, as Mail was using well over 700Mb. I was expecting this to also clean up the excessive space being used by Mail, but it hasn't touched it – Mail is still using over 700Mb. I've powered off and back on again several times, and tried re-adding and removing the account multiple times, but Mail still uses loads of space.

Anyone have any ideas how to clean this up?

Best Answer

It seems like I have answered a number of questions with this particular solution, but let's go for it again.

Often times a backup, wipe, restore process will clear out the cruft still sitting around in the rather opaque IOS filesystem. I don't know why but it works:

  1. Backup: Connect the iPhone to your computer and do a manual backup to that computer. Password protect the backup so you don't have to re-enter passwords.
  2. Wipe: Once you have a good backup go into the iPhone > Settings > General > reset > Erase all content and settings. And let it do its thing.
  3. Restore: Once the phone reboots and is waiting on it's welcome screen plug it back into your computer and restore it from the backup you just made.

9 times out of 10 all the inexplicable space usage on the phone goes away and you have got your space back.

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