Migadu is an email hosting service for custom domains. You use your own domain and, according to the vendor, can create unlimited addresses; charges depend on usage rather than on the number of addresses. The service supports SMTP, IMAP4, POP3 and webmail, and offers Sieve filtering, aliases and catch-all addresses, auto-responders, forwarding, continuous backups and built-in DNS with preconfigured mail records. Several administrators with per-domain access are possible. It is delivered as software as a service.
Migadu-Mail GmbH is a self-funded, independent company registered in Schachen, Switzerland, operating since 2014. According to its FAQ, the servers are not in Switzerland but in data centres in France, which is inside the EU. The company says the service is built and run entirely on open source technologies, but the service itself is not open source. Migadu states that it uses no advertising or tracking and does not access, analyse or share user data. No foreign parent company is named. For a European organisation this combines a Swiss provider with storage in France.