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When you check your iPhone storage usage via the settings app, you鈥檒l see that your mail app is occupying a fair bit of memory. Not just the memory should concern you though, but also the types of files stored in there. Mails with heavy attachment, deleting and opening emails add unnecessary files to your iPhone storage. It鈥檚 the contribution of email cache that causes much trouble, wreaking havoc on your device鈥檚 performance over time.

Suddenly your iPhone is dead slow, you wait extra seconds before apps launch, and when they launch, and it skips while you鈥檙e running them. You have to clear email cache on iPhone ASAP

clear iPhone mail cache

3 Ways to Clear Your Email Cache from iPhone

1 Quickly Clear All iPhone Email Caches in 1-Click

iMyFone Umate Pro or iMyFone Umate Pro for Mac comes with a free junk removal function that can aid you in erasing your email cache. The junk removal function will not only remove the email cache from iPhone, but it鈥檚 powerful enough to clear all other app caches on your iPhone. Thus freeing up valuable storage space for other functions as well as improving your devices performance.

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clear email cache iphone

How to Clear Email Cache on iPhone Using Umate Pro

Step 1:Launch iMyFone Umate, connect your device to your PC or Mac.

Step 2:Cick 鈥淨uick Scan鈥 from the 鈥淗ome鈥 interface. On the next page check or uncheck the junk files you want removed such as crash logs and photo caches.

Step 3:Now click 鈥淐lean鈥. After this Umate Pro shows you the amount of memory you鈥檝e saved and what more you can save.

clear email cache iphone

Other Features of Umate Pro

Clear up temporary files: Temporary files are similar to junk files in that they cause performance issues. Umate Pro helps you get rid of them in one click.

Compress Photos: With social media and the likes, pictures occupy the large part of most people鈥檚 iPhone storage space. Umate Pro can compress your photos to 25 percent of their initial size without losing quality. Umate Pro automatically backs up files before compression.

Mass delete photos, apps, and video: Sometimes you have so much to delete, and the mass delete function of Umate comes in handy here.

Erase previously deleted files: Delete files you have deleted before. Files never really get deleted and can be restored later on. Make sure they鈥檙e gone for good using Umate.

Erase Whatsapp messages and attachment: All attachments, media, and app cache will be wiped clean by Umate.

Permanently erase iPhone messages, notes, and much more: Take your privacy a notch higher by deleting messages and incriminating files permanently with zero chance of recoverability.


If you want to clear up or delete music on your iPhone, please try this iPhone music transfer, which can freely transfer iPhone music between iPhone and iTunes/PC, as well as delete and export iPhone music.

2 Restore Your iPhone

A restore for your iPhone is akin to refreshing a page giving your device a fresh vibe and getting it to a time when it worked properly. It鈥檚 always better to have already made a backup before experiencing performance issues. However if you never made one, you can still perform a reset by backing up freshly onto your iTunes or iCloud. Both methods require different routes and you should pick whichever method you鈥檙e most comfortable with.

3 Uninstall and Reinstall Mail App

The stock email app that comes with your iPhone builds up a lot of cache arising from synced email for quick access. Doing a quick uninstall and reinstall can do the trick of removing email cache files from iPhone. Conversely, you can also remove your account and add it back again by following these steps:

  1. Go to Settings and select 鈥滿ail, Contacts, Calendar鈥
  2. Tap on email account
  3. Select 鈥淒elete鈥 and tap 鈥淐onfirm鈥
  4. Re-add your email by tapping 鈥淎dd New鈥