Posteo - Web- and IMAP-based email service. 2GB cost 1€/month.
mParticle - mParticle is the customer data platform for brands leading the CX revolution. Unify data and simplify partner integrations with enterprise-class security and reliability.
Inbox.lv - Inbox.lv Mail
Segment - We make customer data simple.
Webmail.ca.za - Free email, file storage, sms and more.
Astronomer - Capture every user event and route them anywhere. Automatically