Unsend

Open-source infrastructure for sending transactional email, SMS, and push

PlatformWebfreeglobal

Unsend is open-source infrastructure for sending transactional and marketing email, SMS, and push notifications with minimal configuration, aiming to ensure inbox delivery and provide bounce and complaint tracking. It includes a no-code email builder for newsletters and changelogs, aimed at developers who want reliable, self-hostable sending infrastructure instead of a complex proprietary setup.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Unsend - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

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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