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Email Verification API
Email Verification API Featured

Validates and verifies an email address assessing deliverability and quality.
Email verification API Code Sample

There’s plenty of significant reasons behind having proper validation in place:

  • Sending emails to fake/no-longer-existent addresses will hurt your deliverability.
  • Mistyping an email address will block users from confirming their account or resetting a password.
  • Valid e-mail addresses, lets you stay in touch with users.

This API is the one and the only solid solution to verify that the e-mail address is valid, and reachable. We achieve this functionality by validation with regex, validating the DNS for MX records and than connecting the recipient's SMTP server for validation, without sending any email.

Yes! this email verification API actually connects to the mail server and checks in real-time if the email exists. We don't use historical data.This is the most robust and solid way that is possible within the SMTP protocol's limitations.

What information is provided with the API?

A sample response from the API is here:

    "syntax_valid": true,
    "is_disposable": false,
    "is_role_account": true,
    "is_catch_all": true,
    "is_deliverable": true,
    "can_connect_smtp": true,
    "is_inbox_full": false,
    "is_disabled": false,
    "mx_records": {
        "accepts_mail": true,
        "records": [

is_disposable: Checks if the e-mail is from a disposable e-mail provider such as mailinator.com.

is_role_account: Role accounts are e-mail addresses such as [email protected] and [email protected] If your intention is to reach real person only, use this flag.

is_catch_all: A catch-all address is meant to catch all email sent to any non-existing email accounts on your domain.

is_inbox_full: If the remote user's inbox is full, this may be the reason for bounced e-mails.

is_disabled: Tells us if the remote account is disabled and unable to accept the e-mail you've sent.

Email Verification API: Use cases and examples
Blog Article
Email Verification API: Use cases and examples

How secure is this service?

Prompt API is a legal entity in European Union and regulated by its laws. We never store any sensitive information on our servers and fully respect your privacy.

Is it free?

Email Verification API is a paid service but we have a free plan that will be more than enough for you to test its functionalities and see if it works for your needs.

How does Prompt API's pricing work?

Our subscriptions are tiered. We offer a monthly subscription scheme and you decide which tier works for you the best.

Can I cancel/upgrade/downgrade at any time?

Sure you can. You can cancel your subscription or upgrade/downgrade yourself, anytime without any restrictions.

Full verification
Simple and Secure

Ready to try it out?

We offer a free plan. No credit cards required!

or see documentation

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