If you want to send emails automatically, follow these steps.
Go to your server (for example on https://pp.vnav.cloud) and edit your config file with these things:
SMTP:
Domain: VNAV.Cloud
Port: 25/465/587. We recommend you use 587 because that is the safest port.
IMAP:
Domain: VNAV.Cloud
Port: 110/995. Here we also recommend 995 because that is the safest port.