Interesting Topics in Email

John Clancy wrote:

Question 1. What is the performance threshhold for a bulk email using
sendmail? I haven't hit it yet but my largest email has gone out to 500
recipients. What if I sent an email to 10,000 recipients? Will it send
or will it break? I'd rather anticipate this problem now rather than
find out about it later.

I can't answer your question, but I had the same question earlier this
year. I decided to send the email to groups of N users at a time.