I can’t send an email

This happened on the following devices:

a)  My blackberry Z10

b) my Ipad2

My blackberry is using my bell mobility network, and my ipad is using my wifi.  Two different internets entirely.

I cannot send an email.  On my ipad I get the message:  "Cannot Send Email - An Error occurred while delivering this message".  On my blackberry I don't get a written message, I just get the message coming up in my hub with a red circle with a white line through it meaning "unsendable".

In both cases I have deleted the account and re-installed it, and turned off the device and rebooted it.

On my ipad I have no other email service.

On my blackberry I have email through my work as well, and that one is working fine (it is not a hotmail account).

Interestingly, I can access my hotmail email no problem through the internet on my home computer (which is the same wifi that my ipad is trying to run on) and on my actual devices (my ipad and my blackberry)!!!

It is VERY frustrating - the whole purpose of a mobile device is to be able to respond to emails in a mobile fashion - I shouldn't have to get my email on my device, then wait to respond until I can find a physical computer to access the internet!!!

This happened to my blackberry about a week ago (didn't have my ipad with me at the time) but I restarted my phone and it worked again.  Not helping this time.

Please help ASAP!!!!

My email is *** Email address is removed for privacy ***