I am moving from shared hosting to VPS. I have a custom app built and in shared hosting I did not require to do set up for emails. It had cPanel and came with emails. Now I am moving to VPS, I realize I have to install a SMTP server on it so that it can send emails. - My vps has only 512MB ram. So any server which takes less space would be nice - It will be used to sending emails only. So I only require outbound feature. - I will be sending emails only twice a day. Once at 12pm and at 12am. So it would be nice if I can invoke the server via a cron and and then turn it off once emails are sent. - I will be sending about 500-600 emails per day. As of now, they will increase after few days. One last curious thing. If Xenforo installed on VPS, do I have to install mail server? Or else how Xenforo handles mailing? This is NOT related to my app, I am just curious how it is done with Xenforo. Thank you!