System Requirements

YaySMTP plugin does not require any sophisticated configuration before it can work for you, it can literally work on minimally low server configuration to give you a nice experience with no hassles.

Also, note that you need to first create an account and choose a plan (mostly free plan is enough) with these different SMTP servers or the specific ones you wish to connect from all those that are available inside the plugin's settings before you could be able to use the full functionality of this tool.