Senlo

Self-hosted, provider-agnostic infrastructure for transactional emails.

PlatformWebfree

Senlo is an open-source, self-hosted email infrastructure platform for building, managing, and delivering transactional and lifecycle emails. It provides a drag-and-drop template builder alongside an API-first workflow, template versioning, and multi-project isolation, and can switch between delivery providers like AWS SES, Resend, or Mailgun without code changes. It's aimed at developers and product teams who want full control of their email infrastructure rather than a closed marketing platform.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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