Check remote servers when validating email addresses Colombia raven chat line
We looked at the validation services available and weren't satisfied with any of them, either for performance, accuracy or completeness reasons.
So today, we're releasing a project we affectionately called Guardpost, as our newest API, and are also pulling back the curtain to show exactly how we built it.
We're launching this as a free service that anyone collecting email through web forms can (and should! You'll need a Mailgun account to use the service, but you don't have to send your emails through Mailgun.
If you want to get started right away, check out the API documentation, or a little sample jquery app, as an example of how to use Guardpost in a signup form.
This is not intended to be a bulk mailing list cleaning service and we reserve the right to disable your account if we see it being used as such.