Is there a limit to the number of recipients in a single email?
Is there a limit to the number of emails per day?
I'm going to advise all my contacts of a change to my email address, and I've collected a few hundred over the years, so want to advise them all. I'm guessing I might hit a limit somewhere if I try sending just one email to all contacts (via bcc of course).
Fixed! Go to the fix.