hMailServer Alternative: What to Run After Upstream Stopped
hMailServer is no longer maintained. This page covers the actual replacement choices for Windows SMTP/IMAP/POP3: commercial servers, maintained forks, and when to leave Windows.
The question is not “what is most like hMailServer”
Upstream hMailServer is no longer developed. The project itself warns about SHA-1 and old OpenSSL and tells you to migrate. If you searched “hMailServer alternative,” you already picked a product and it aged out from under you.
hMailServer was a Windows protocol server: SMTP, IMAP, POP3, spam scoring, COM API, often SQL-backed. It was not Exchange. Replacements that sell calendars and MAPI are a category jump. Forks that keep the protocol server are a maintenance jump.
The Windows mail server overview compares the whole field. This page is only the replacement decision.
What you must not lose in the move
- Domains and users exportable from hMail’s database or via IMAP.
- SMTP/IMAP/POP3 with modern TLS — that is the reason to leave.
- Spam path. hMail hooked an AV; the successor needs an equivalent, on-box or a gateway such as Hexamail Guard.
- Scripts/COM if you automated accounts. Commercial servers will not run those scripts; budget a rewrite or AD/LDAP sync instead.
Do a mailbox count over IMAP before you uninstall anything.
Replacement map
Pick the row that matches why you ran hMail, not the logo that appears in old forum threads.
Hexamail Server as the commercial Windows path
Hexamail Server covers the hMail job (SMTP/IMAP/POP, TLS, multi-domain, spam/AV options) plus webmail, CalDAV, public folders, and Active Directory/LDAP sync. It also runs on Linux, so you are not trapped on Windows for the next decade.
It will not execute your old hMail COM scripts. Migrate mail over IMAP, recreate accounts from AD or a CSV, then retire the old box.
Need the wider Windows landscape, including MailEnable pricing and SmarterMail MAPI? That is the hub comparison.
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