OpenSend

Spec sheet

Product

OpenSend describes itself as an open email infrastructure platform with a Resend-compatible API, SDK, broadcasts, contacts, and dashboard.Read 8 Oct 2026 · opensend.namuh.co

Integrations

The self-hosting guide documents AWS SES/SNS, PostgreSQL, Redis, S3, Cloudflare DNS automation, and Google OAuth configuration.Read 8 Oct 2026 · opensend.namuh.co

Security

Dashboard and API routes are tenant-scoped through Better Auth organizations and server-side ownership checks.Read 8 Oct 2026 · opensend.namuh.co

Support

The Free and Lite plans include community support, Starter has email support with a 48-hour response target, and Growth has priority support with a 12-hour target.Read 8 Oct 2026 · opensend.namuh.co

Company

The homepage says OpenSend is built by Jaeyun Ha and Ashley Ha.Read 8 Oct 2026 · opensend.namuh.co

Data control

Self-hosted OpenSend uses the operator's AWS SES quota, database, secrets, and observability stack.Read 8 Oct 2026 · opensend.namuh.co

Features

The product includes contacts, segments, topics, email automations, templates, open and click analytics, and email event tracking.Read 8 Oct 2026 · opensend.namuh.co

Overages

Cloud sends are not blocked after the quota; overage is billed at $0.85 per 1,000 emails until the customer upgrades.Read 8 Oct 2026 · opensend.namuh.co

Self-host license

The pricing page says OpenSend can be used, modified, and self-hosted for free, including commercially, under ELv2, with hosted resale as the stated restriction.Read 8 Oct 2026 · opensend.namuh.co

Sending

OpenSend sends email through AWS SES and supports API sends, batch sends, scheduled sends, and broadcasts.Read 8 Oct 2026 · opensend.namuh.co

Webhooks

Outbound webhooks use HMAC signatures with Svix-compatible headers, which recipients should verify before processing events.Read 8 Oct 2026 · opensend.namuh.co

Plans and prices

Every OpenSend plan and price →

Where Specifiction places it

• Email APIs#25 of 317.3