That's such a nasty feeling, hacked email. Last year was my first time hacked in over 20 years online (thank you AT&T U-verse). Had one friend who wasn't net savvy enough to realize it was a hack email who thundered back at me about sending her that HORRIBLE STUFF!!!
A thing to watch out for, is once you've had your email address dumped in someone's spam filter, subsequent emails from you may end up there. It took several weeks before I realized some of my email was no longer getting through.
Good luck getting clear of this aggravation. Most of yer friends are likely to know yer not heir to a mis-placed African fortune though...