API archive entry · source-reported
AGPC Domain Check
Check a domain's SPF, DKIM, DMARC and MX with a graded shareable report
Other Email APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
MailSenpai DNS Check
Check a domain's SPF, DKIM, DMARC and MX records and get what to fix, with the values to publish
No auth · HTTPS reported · CORS Yes
Email Spam Tester
Send a test message and get a spam score, 41 checks with RFC citations and a fix plan
No auth · HTTPS reported · CORS Yes
Email Validator by LifeStep
Validate email syntax and MX, detect disposable/role addresses, suggest typo fixes
No auth · HTTPS reported · CORS Yes
Disify
Validate and detect disposable and temporary email addresses
No auth · HTTPS reported · CORS Yes
EVA
Validate email addresses
No auth · HTTPS reported · CORS Yes
Kickbox
Email verification API
No auth · HTTPS reported · CORS Yes
How to compare them
Coverage
Compare exact endpoints, fields, geography, history, and update frequency.
Operating cost
Model request volume, caching, overages, support, and migration cost.
Integration risk
Test auth, errors, pagination, latency, versioning, and outage behavior.
Data rights
Review attribution, redistribution, retention, privacy, and commercial-use terms.
Source reference
This page separates source-reported facts from questions that need live provider verification.