The most likely cause of this issue is an email that is breaking the iPad when it tries to load or display it. Isolate the iPad from the internet (turm off wi-fi and/or cellualr) then see if you can open the Mail app. If it opens, itās something in the queque to download. Go to the website and delete any new/suspicious emails before enabling the internet again.
If Mail still crashes, them remove the account. If you get an option to delete stuff, do so. Go to your online email account, and agailn deal with any new/suspicious emails. Re-add the account and try again.
A slightly less likely cause is the Mail app itself broke, or some setting is a problem.
The first and less destructive thing to try Reset All Settings in Settings > General > Reset. This will not erase any content or apps, but will default a lot of the system settings and some of the native app settings; like Mail.
The second thing to try is to Erase All Content and Settings, in the same place. Obviously you want a good backup of the iPad before you do this. Less obvious, youāll to go through all your favorite files, pictures, media, etc. and make sure you have copies somewhere off the iPad. Sometimes (rarely) restoring from a backup also restores an problem. Youāll want to be prepared for the possibility that youāll be setting up your iPad from scratch.
The final and most troublesome possibility is that something in the iOS has been corrupted. In that case youāll need to completely reload iOS using something called DFU mode or recovery mode. Honestly, Iām fuzzy on how this works since Iāve never had to resort to it; so research is recommended.
If you have and Apple Store nearby, you can save yourself most of this hassle. They will troubleshoot the iPad for free, and most issues like restoring/recovering there the iPad will also be free, and done in the store while you wait. No guarantees, but worth a try if youāre within a reasonable commute.
* Push email: At this time the only type of account Iām sure works with Push notifications is Appleās iCloud account. Gmail used too, when the offered the choice of Exchange accounts. Since they moved all consumer (free) accounts to IMAP only, they havenāt worked with Push. That suggests that MSN, hotmail, and other Microsoft Exchange accounts may work with Push. I donāt have any of those accounts to test out that assumption.
Thatās a long way of saying the Push button may be grayed out because none of your email accounts are cmopatible.
Thatās about all I can think of at this time. Good luck.
