THE RESEARCH LIBRARY
Explore the consensus across leading AI platforms. Every study starts with a specific hosting need and makes the underlying evidence available for you to inspect.
Showing 1–10 of 10 results
Independent research · Open methodologyVultr leads this 2026 ranking of VPS hosts for self-hosted email servers, named by 6 of 7 AI platforms. VPS For Life is best if you need outbound port 25 open by default, while Hetzner is th
BitVPS is a mixed-to-uncertain fit for self-hosted email servers needing full deliverability control. It states outbound port 25 is open by default, PTR records are editable from the panel,
DigitalOcean is a weak fit for self-hosted email servers. Droplets include a public IPv4 and automatic PTR records, but SMTP ports 25, 465, and 587 are blocked by default, including through
Hetzner is a mixed fit for self-hosted email servers. It provides dedicated IPv4, customer-editable PTR/rDNS, and US locations in Ashburn and Hillsboro, but outbound SMTP ports 25 and 465 ar
InterServer is a weak-to-uncertain fit for self-hosted email deliverability. Its KVM VPS includes root access and support-managed rDNS, but outbound port 25 is blocked by default and mailing
Kamatera is a mixed fit for self-hosted email servers. Port 25 is open by default and each server includes a dedicated IP, but independent sources report persistent blacklist presence on its
Linode is a mixed-to-good fit for self-hosted email servers. It supports configurable reverse DNS and a dedicated IPv4 per instance, but outbound SMTP ports 25, 465, and 587 are blocked by d
OVHcloud is a mixed fit for self-hosted email servers. It offers customer-configurable reverse DNS, documented SPF/DKIM/DMARC guidance, and low VPS entry pricing, but port 25 is blocked by d
VPS For Life is a mixed-to-good fit for self-hosted email servers. It provides open port 25, a dedicated IPv4, and free custom rDNS from $4.95/month, but no platform found independent eviden
Vultr is a mixed fit for self-hosted email servers needing full deliverability control. It provides self-service reverse DNS and a dedicated public IPv4, but outbound SMTP port 25 is blocked
