VPS for a mail server
Your own email: Mailcow, Mail-in-a-Box, Postfix and Dovecot, corporate mailboxes
Why that many
A mail server cares about deliverability and stability, not cores. Relaying mail itself is almost free; the resources go to anti-spam and filtering — a stack like Mailcow pulls in Rspamd, ClamAV and a database, and those eat the memory. But mail is decided by the address, not the server: without a correct reverse PTR record, an open port 25 and a clean IP reputation, your mail lands in spam no matter how the server is configured
disk from 25 GB
Postfix and Dovecot by hand, a few mailboxes on one domain, light anti-spam
disk from 50 GB
A ready mail suite with a web UI, dozens of mailboxes; Mailcow is happier from 6 GB
disk from 120 GB
Several domains, antivirus and deep filtering, mail archive
- Whether the provider lets you set a reverse PTR record for your IP: without it mail lands in spam en masse
- Whether outbound port 25 is open: some providers and clouds block it by default
- The reputation of the assigned IPv4: whether it is already on blocklists at handover
- Whether you can quickly change the address if it turns out to be "dirty" from spam lists
Find a server for a mail server
Server matching
108 plans with a verified price, data checked August 17, 2026Your own email: Mailcow, Mail-in-a-Box, Postfix and Dovecot, corporate mailboxes
Some links are affiliate links: if you sign up we earn a commission at no extra cost to you. It does not affect the ranking, the matching formula is open
Suitable plans from the base
Selected are the ones that cover the recommended configuration: at least 2 cores and 4 GB of memory
Who claims this workload
Common questions about a mail server
Why does mail from my server land in spam
Almost always it is the domain and address setup, not the message text. You need three DNS records — SPF, DKIM and DMARC — a correct reverse PTR record for the IP, and an unblocked port 25. If the address came from spam lists, only replacing it helps. This is about reputation, not server power
How much does a mail server need
A hand-rolled Postfix and Dovecot for a few mailboxes lives on two gigabytes of memory. Ready suites with anti-spam and antivirus — Mailcow, Mailu, Mail-in-a-Box — ask for noticeably more: Mailcow officially recommends six gigabytes and up, because Rspamd and ClamAV keep their databases in memory. Size the disk with headroom for the mail archive
Is it worth running your own mail or using a hosted service
Your own server removes the per-mailbox fee and keeps correspondence under your control, but shifts deliverability, updates and spam-fighting onto you. For a handful of mailboxes a hosted service is almost always simpler and cheaper all-in; your own server pays off when there are many mailboxes or data isolation matters