mailtoaster.org

Mail, calendar and contacts. Sign in with your SYSN account.

Webmailweb.mailtoaster.org

Read and send mail, calendar, contacts.

Account panelpanel.mailtoaster.org

App passwords, filters, forwarding, vacation replies.

Administrationadmin.mailtoaster.org

Server management (admins only).

Mail client settings

Service	Server	Port	Security
IMAP	mx.mailtoaster.org	993	SSL/TLS
SMTP (sending)	mx.mailtoaster.org	465	SSL/TLS
SMTP (alternative)	mx.mailtoaster.org	587	STARTTLS
POP3	mx.mailtoaster.org	995	SSL/TLS
Sieve filters	mx.mailtoaster.org	4190	STARTTLS
CalDAV / CardDAV	https://mx.mailtoaster.org/dav/	443	HTTPS
JMAP	https://mx.mailtoaster.org/.well-known/jmap	443	HTTPS

Username is your full email address. Desktop and mobile mail apps need an app password, created in the account panel; your SYSN password only works in the browser.