Free
Free
Open-source software distributed under the terms described in the project COPYING materials.
- Access
- Open-source software distributed under the terms described in the project COPYING materials.
Assistant · Vendor site 2026-10-04
Courier is a mail transfer agent and integrated mail-server suite providing SMTP, IMAP, POP3, and mailing-list services. It targets administrators who want a consolidated, standards-based mail stack with related utilities such as maildrop and webmail components.
System administrators building or maintaining Linux and Unix mail servers who need an integrated MTA suite.
Courier is server infrastructure software; it does not provide hosted SaaS plans or a consumer writing assistant interface.
The Courier Mail Server project documents an integrated suite for SMTP delivery and mailbox access protocols on Unix-like systems.
What it can do
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Scope | Project homepage describes Courier as a mail server suite covering MTA, IMAP, POP3, and list services. | Facts sourced | 2026-10-04 |
| Licensing | Site references COPYING for distribution terms of the open-source mail server components. | Facts sourced | 2026-10-04 |
Understand the total cost
Free
Free
Open-source software distributed under the terms described in the project COPYING materials.
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Courier is a mail transfer agent and integrated mail-server suite providing SMTP, IMAP, POP3, and mailing-list services. It targets administrators who want a consolidated, standards-based mail stack with related utilities such as maildrop and webmail components.
Open-source software distributed under the terms described in the project COPYING materials.. This record lists ongoing free access; check the plan limits before starting.
No paid monthly price is listed; this record treats the product as free to start. See the plan cards for entitlements, billing commitments and seat minimums.
Not confirmed. API access and subscription access may have different terms; consult the linked sources.
Courier is server infrastructure software; it does not provide hosted SaaS plans or a consumer writing assistant interface.
No retained pricing changes yet. A current price alone does not establish a historical trend.
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.