Cyrus IMAP
5.8#24 in mail server softwareFree planFree planLinuxSelf-hosted
VisitCyrus IMAP vs Stalwart Mail Server
Stalwart Mail Server
7.1#4 in mail server softwareFrom $1.09 a yearFree planWebAPILinuxmacOS
VisitWhat both publish
| Fact | Cyrus IMAP | Stalwart Mail Server |
|---|---|---|
| Integrations | The installation guide describes receiving mail from SMTP servers such as Sendmail, Postfix, and Exim through LMTP. | Listed integrations include LDAP, Active Directory, OIDC, SQL directories, RocksDB, FoundationDB, PostgreSQL, MySQL, SQLite, S3-compatible storage, Azure Blob, and search engines including Meilisearch, Elasticsearch, and OpenSearch. |
| Protocols | Cyrus supports JMAP, IMAP, POP3, CalDAV, and CardDAV. | It supports JMAP, IMAP, POP3, SMTP, CalDAV, CardDAV, and WebDAV. |
| Security | The feature documentation lists Kerberos, LDAP, and SQL authentication, access control, and a sealed system design. | The product page lists mailbox encryption at rest with S/MIME or OpenPGP, DANE, MTA-STS, automatic ACME TLS, DKIM key rotation, access controls, rate limiting, and automatic IP banning. |
Cyrus IMAP plans
- Cyrus IMAPFree
Stalwart Mail Server plans
- Community EditionFree
- Enterprise — 50,000 to 99,999 mailboxes$1.09 a year
- Enterprise — 10,000 to 49,999 mailboxes$1.25 a year
- Enterprise — 5,000 to 10,000 mailboxes$1.48 a year
- Enterprise — 1,000 to 4,999 mailboxes$1.74 a year
- Enterprise — 500 to 999 mailboxes$2.04 a year
Pick Cyrus IMAP if…
You want what its maker publishes above — check its page for the details.
Pick Stalwart Mail Server if…
You want what its maker publishes above — check its page for the details.