- You can reset all settings and restore mail settings to default on your iPhone and use separate email apps for Gmail, yahoo, outlook and other emails
On your iPhone, if your mails are marked as read before you open it or before you read and mails are marking as read on iPhone then you need to follow these steps and troubleshooting methods to fix mail read before opening issue on your iPhone and if you want you can add all emails marked as read on iPhone by selecting all and mark as read if you want.
The one possibility would be if you have logged in to multiple devices like Macbook and your iPhone and you have opened that email on your Macbook it will be marked as read and once mail is opened on macbook will be marked as read when you open on your iPhone.
Fix Mail Mark as Read Before Opening on iPhone
Below mail troubleshooting guide will help you get rid of mail mark as read before opening or reading.
Reset All settings
By resetting all settings you, it will reset all data and will be restored to default settings on your iPhone and if you have accidentally changed email settings then you need to revert it back and if you haven’t remember the mail change settings you did on your iPhone then you need to rest all settings on your iPhone to get rid of mail mark as read before reading or opening on your iPhone,
Step 1: Launch Settings -> General -> Tap on Transfer or Reset iPhone
Step 2: Select Reset -> and tap on Reset All settings and confirm reset by tapping ok button on popup box.
Now, you need to wait until your iPhone finishes the reset process and restore it with default settings on your iPhone and restart your iPhone once reset all settings finishes.
Use Separate Email Apps
If you are having issues with your gmail app then you need to download gmail app from apple store and start using gmail app for iPhone.
Likewise, you can try using yahoo, outlook, AOL and other apps on your iPhone.
Also Read: 1) iOS 14.5.1: Bellsouth Email Not Working On iPhone
Remove all email apps added on your iPhone
Once you install separate email apps on your iPhone you need to remove all added apps on your iphone,
Step 1: Launch Settings -> Scroll down and tap on Mail.
Step 2: Tap on Accounts -> Select your email account that you want to delete and delete email account.
Step 3: Now, select Delete from my iPhone in the popup box and confirm email deletion,
That’s it, by following these procedures you need to delete all email added to your iPhone.
Step 4: Now, open separate email account apps from different accounts and see, mostly mail mark as read before opening on iPhone will be resolved successfully.