When to stay on Emailable
The API is the product. Single checks typically return in well under a second, the docs are clear, and the dashboard stays out of the way. If you need a valid or invalid flag on a signup form and latency is the constraint, Emailable earns that. It is a form verifier, and the bulk export on our list left Yahoo and AOL unchecked. Catch-all domains were weaker than a dedicated provider check.
Keep it if most of the volume is real-time form validation, lists are mostly corporate domains, and the API is already in production. $357 for 100K is 3.6 times Wontbounce’s $99 at the same volume, and credits that expire before you use them make the effective cost higher than the sticker. Switch the bulk file if Yahoo, Outlook, AOL, and catch-alls still bounce after a clean export.