I only recommend services that I use and I'm happy with so If you are looking for a secure and private email provider, [Tutanota](https://mail.tutanota.com/signup?ref=ZmwzT2c2Sks) should be your choice. Especially if you are on a journey to de-google your life.
*Disclaimer!* *If you choose to use their paid service, we both get something* ;)