HappyDeliver Self-Hosted Email Deliverability Tester

Explore this developer service’s ongoing no-cost allowance, restrictions and official documentation before deploying.

INCLUDED FREE ALLOWANCEAGPL-3.0-or-later self-hosted email deliverability analysis software with REST API, SMTP/LMTP test ingestion, SPF/DKIM/DMARC, DNS and spam scoring; no software usage quota or expiry stated.

View official documentation

Plan details

What do these plan and deployment labels mean?

Plan: Ongoing free allowance
Deployment model: Self-hosted
Credit card: Not required
Commercial use: Allowed
Added to directory (UTC): 2026-11-09
Last checked: 2026-11-08

Important restrictions

Bring your own server, domain, DNS, storage and inbound SMTP port 25 (often blocked by cloud providers). Optional VirusTotal and third-party reputation API services have separate quotas/terms; AGPL network-use obligations apply. No free hosted email sending or infrastructure is included.

View official documentation

Independent community listing, not affiliated with the provider. Always check the latest billing policy and quotas before enabling paid usage.