Q: Problem getting emails with Iphone 6

Hi, I used i phone 3 before and I used 3 email accounts before.

I bought a i phone 6 3 days ago.

I set up all 3 email accounts, but 2 of them cannot get emails.

Only one account is getting email.s

The other two accounts are hotmail and my university account that uses office 365 server.

How can I fix it?

I did deleting and adding new accounts several times.

But it does not fix the problem/