Some iPhone 7 users have had issues that their iPhone 7 keeps downloading old emails. Other iPhone users also have the similar problem. Mail issues such as the ones mentioned above normally occur after users update their iPhones to the latest iOS release.
We have tested two solutions that will help you stop your iPhone X/8/8 Plus/7/7 Plus/SE/6s/6s Plus/6/6 Plus from downloading old or deleted emails.
Your iPhone keeps downloading emails that have been deleted? This is one way to solve the issue.
Step 1: Soft reset your iPhone by holding on the sleep/wake button and home button simultaneously until the Apple logo appears on the screen.
iPhone X users do so by holding the Sleep/Wake button- which is located on the top right part of the phone- and one of either the volume up/down buttons until the Power Off button appears. Swipe right and press the Sleep/Wake button immediately the screen goes black.
Step 2: Delete and set up your email account on the Mail app afresh.
To stop iPhone downloading old or deleted emails, you can also create a new folder and move those old emails to this new folder.
Step 1: Log in to your email account, mail server or self-hosted emails using a desktop browser.
Step2: Create a new folder on each and move all old emails including those you've already read in the new folder. (Only the emails that you haven't read should be in your Inbox folder.)
Step 3: Set up the email account on your iPhone Mail app.
What this does is download all unread emails from your email service provider or mail server to your Inbox folder of your Mail app. It is important to state that all emails and folders under the folder you've just created will be downloaded to your iPhone but your iPhone doesn't mark them as unread. Any other emails from folders besides the Inbox can only be pushed manually. Emails from all folders bar the Inbox Folder will be downloaded from your mail service provider or mail server to iPhone only when you open the folder you've just created.
If you still have issues with iPhone downloading thousands of old Emails, it could be that your OS has an issue and you need to use a 3rd party app to get it fixed. Tenorshare ReiBoot is a simple and easy to use software that fixes iPhone issues such as DFU and headphone modes, iPhone stuck at Apple Logo, Boot loop and blue screen of death and various kinds of App stuck or unusual issues. Even better it does so without losing any data.
With all these features it's little reason that ReiBoot is among the best software there is to fix iPhone and iOS issues. Some of the features mentioned above can be tested in the free version. The full version grants you more functionality.