Is there a way to mass email lets say, 100 people with a single connection but for the email to be different for each user. I need small variables changed like their name, and an authentication key to auto log them into the site when they click links.
Or is it really not that bad to be establishing that many connections to the mail server?
Edit: It’s not that bad even if it’s 10k members?
Short answer – it is really not that bad. The cost of connection for an SMTP session is quite low.