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Email Validation API

DeBounce's enterprise grade cloud-based email verification solution is compatible with all programming languages.

DeBounce's API for Email Validation

The most comprehensive API for real-time and bulk validation

Whether you're a developer who is writing an application that requires the registration of new valid users or just a business with a large mailing list, DeBounce can handle the task of verifying the validity of your emails.
Open API Documentation

API Features

  • Detect Bounces

    Remove invalid and hard bounce email addresses from your database.

  • Email Avatar

    Get an avatar URL associated with any email address you provide. Avatars are obtained from multiple online resources.

  • Syntax

    The address is syntactically verified to ensure that it has a valid format according to RFC standards.

  • Bulk Email Validation

    Upload your email lists using the API for validation and download the results.

  • DNS

    The address is DNS verified to determine whether or not the domain exists and that there is a mail server attached to receive incoming mail.

  • Role Accounts

    The address is filtered against a database of role-based mailboxes which is constantly updated.

  • Spelling Suggestion

    Get a "Do You Mean" suggestion if a misspelled email is provided. The correction of major email provider is available.

  • Disposables

    The address is filtered against a database of disposable address providers which is constantly updated.

  • Spam Traps

    The address is filtered against a database of known spam-traps and honeypots which is constantly updated.

  • Complainers

    The address is filtered against a database of known habitual complainers which is constantly updated.

  • Free Providers

    The address is filtered against a database of free address providers which is constantly updated.

  • SMTP Test

    The address is verified on the receiving mail server to determine that the mailbox exists and is able to accept mail.

Which Checks Does Email Validator Perform?

DeBounce uses a multi-layer checking process, with every single email going through the following testing and cleaning steps:
  • DNS validation, including MX record lookup
  • Disposable email address detection
  • Misspelled domain detection to prevent Typosquatting
  • Syntax verification (IETF/RFC standard conformance)
  • Temporary unavailability detection
  • Mailbox existence checking
  • Catch-all testing
  • Greylisting detection
  • SMTP connection and availability checking

Frequently Asked Questions

Read the list below for our frequently asked questions. If your question is not listed here, then don’t hesitate to contact us. We'd love to hear from you!
How do I use the API?
There is full documentation on the API page, which is accessible here.
What is the maximum API call rate?
5 concurrent calls are the maximum you can perform while using the API endpoint. DeBounce API is not built to perform many or bulk validations.
What is the API's up-time?
We are constantly monitoring all of our validation servers, including API. Currently, DeBounce API's uptime guarantee is 99.8% - we never go below this. You can monitor all DeBounce servers and their up-times via this status page.
Does DeBounce store emails that are called from the API?
DeBounce really cares about data protection and user privacy, so it never stores any emails that are called from API.
How can I find out my remaining credits?
On every call, you will receive an update of your remaining credits on API response. Moreover, there is a separate API to view remaining credits on your DeBounce account. See APIs documentation here.
Can I validate an email list using the API?
Sure. You can perform single validation or bulk validations using the API endpoint. Check the API documentation for more information.