Gammu SMSD review
A free, open-source choice for modem-based inbound and outbound SMS automation.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Gammu SMSD is a free, open-source, self-hosted daemon for sending and receiving SMS through compatible GSM modems or phones. It periodically scans a modem for incoming messages and sends messages placed in configured storage. Developers and system administrators can use it to build modem-based SMS workflows, including two-way messaging, delivery-status tracking, and integrations with custom software.
Its strongest fit is a deployment that needs direct control over message handling and storage. SMSD can store messages in files or SQL-backed systems, including MySQL, PostgreSQL, SQLite through DBI, ODBC databases, and other supported database systems. It also supports multiple modem instances through PhoneID, provides command-line tools for message injection and daemon-status monitoring, and can run custom programs after receiving messages. C and Python interfaces add options for message injection and status access.
Gammu SMSD is more focused than a broad, multi-protocol SMS gateway. It depends on compatible GSM modem or phone hardware, so it suits teams prepared to manage that infrastructure and configure the daemon around it. The published product details describe a free open-source distribution as part of Gammu rather than subscription tiers. Choose SMSD when self-hosting, modem connectivity, queues, inbound processing, and database-backed workflows are priorities. An alternative may be a better fit for organizations seeking a hosted service or a gateway centered on multiple communications protocols rather than GSM modem control.
Gammu SMSD pros and cons
- Where it wins
- Free and open source for self-hosted deployments
- Supports inbound SMS, queued sending, and delivery reports
- Connects with SQL databases, C, Python, and custom programs
- Where it doesn't
- Requires compatible GSM modem or phone hardware
- More daemon- and modem-focused than a multi-protocol gateway
- Requires configuration of storage, modems, and SMS workflows
Gammu SMSD fact sheet, pricing and score →
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