https://www.reddit.com/r/selfhosted/comments/ha1ikl/best_vps_for_email_server/
+1 for hetzner. Use 2 vps for 2 mail server. All ok. On one use volume + zfs on it + backup zfs snapshot on another volume twice per week by ...

https://forum.cloudron.io/topic/10993/best-vps-provider-for-mail-server
Currently I use AmazonSES for mail relay. I'm thinking of testing running a full mailserver. I use Vultr, and even though they opened port ...

https://flywp.com/blog/7357/top-10-vps-providers-for-mail-server/
DigitalOcean is a leading cloud VPS provider recognized for its simplicity and scalability, making it an ideal platform for hosting mail servers ...