Why is my iPhone 6S Plus in a contious checking for mail mode but never updates mailboxes?

[iMore Question]

Iphone6S Plus is in contious "checking for mail" mode but never updates mailboxes

Mail suddenly stopped working. I have deleted both accounts and recreated them. They worked once, then stopped working again.

 

[Peligro911]

Re: Iphone6S Plus is in contious "checking for mail" mode but never updates mailboxes

could be a server issue what mail services do you use ?