Virus sending emails on my behalf

Virus sending emails on my behalf

Hey,

It appears that maybe someone has hacked my account or a virus was sending hundreds of emails on my behalf and I keep receiving hundreds of "Message Delivery Failure" notifications.

I have scanned my phone / computer and changed passwords, but there are hundreds of emails every day.

Is there anything else I can do instead of going through all of these emails and deleting them?

Thanks!