poste.io

poste.io · checked 9 Oct 2026

#15 · Email Server Software #17 · Mail Server Software

Visit poste.io ↗ Alternatives poste.io vs hMailServer

How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Email Server Software6.0#15 of 33

Poste.io is a self-hosted email server with web administration, webmail, spam protection, and mail server components in one Docker container.

Pricing

FREEFree · For personal use only · unlimited mailboxes and domains · no email supportFree
PRO549$ 349$ /year · For production use · unlimited mailboxes and domains · domain administrators · diagnostics and log viewers · email support$349/yr
PRO+1239$ /year · Managed deployment and migration · unlimited mailboxes and domains · email support · remote installation, updates and monitoring$1,239/yr

As poste.io lists them, checked 9 Oct 2026.

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Facts

Website: poste.io
Price: Free tier · from $349/yr
Free trial: Not stated
Administration: The product includes web administration, a REST API, mailbox quotas, and per-mailbox settings.
Company: Poste.io identifies Analogic s.r.o. in Klatovy, Czech Republic, and says it has been shipping since 2014.
Deployment and data: Poste.io runs in Docker, while mail and configuration are stored on a user-owned volume and the user database is a single SQLite file.
Deployment requirements: The getting-started guide requires a 64-bit Linux distribution, Docker, a public IP address, reverse-DNS control, and access to domain DNS administration for an internet-ready server.
Founded: 2014
Headquarters: Klatovy, Czech Republic
Included components: The container includes Haraka, Dovecot, Rspamd, ClamAV, Roundcube, NGiNX, SQLite, and Z-Push.
Integrations: The documentation describes an Elasticsearch integration for PRO log viewing and names Uptime Kuma, Prometheus, and Grafana as external monitoring systems that can use its monitoring API.
Mail features: It supports SMTP, IMAP, POP3, HTTPS webmail, redirects, aliases, vacation replies, Sieve filtering, and autodiscovery.
Managed service: PRO+ includes transfer of current email accounts and remote installation, updates, and monitoring; transfers are offered for servers based on Unix software.
Monitoring: An authenticated, read-only health and metrics API is available for external monitoring, is disabled by default, and cannot read email or change settings.
Security: The feature page states that TLS is used on every protocol, passwords use salted SHA512, and SPF, DKIM, DMARC, and SRS are supported.

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