To set up Ecomail on Outlook / Mail / Thunderbird or any other email app on mobile, here’s the info you need to use:
General info (incoming / outgoing):
Username: your full email address (so, with the @ecomail.fr for example)
Password: the password for your mailbox
Incoming mail server:
Host / address: imap-fr-par.ecomail.earth
Port: 993
Security: SSL
Outgoing mail server:
Host / address: smtp-fr-par.ecomail.earth
Port: 587
Security: TLS / STARTTLS
Pay close attention to the addresses of the incoming and outgoing servers. Some apps might auto-configure your mailbox with wrong info.