I am looking to move an existing WordPress website to a virtual private server (VPS). It will be a Debian (minimal install) running ISPConfig3, Squirrel Mail, and Apache2. The WordPress site currently accepts 40-60 online payments per day and the VPS will need to handle at least 800 incoming emails a day.
What VPS spec would I require to run WordPress
wordpress;apache2;vps;bulk email;debian