I think you got me wrong.
I’m not referring to the “Creating of a mail server”. Rather having a simple but nice interface (UX) to compose (to send emails) and to read (incoming emails), so we can use it to reply to official emails we receive.
Isn’t AWS’s “simple Email service (SES)” already controlling spam etc? We just have to provide the UX in the discourse so we have a nice yet simple UX mail inbox and a composer.
I’m not quite sure if providing a single page UX in discourse is that complex (as we already have the server built into it and we can use AWS SES via discourse as well.)