Best Email APIs

Best Email APIs to send transactional or marketing emails as well as validate email addresses.

About this Collection:

Email API

Email validation APIs

Valid email addresses are essential for marketing campaigns in creating traffic, enhancing engagement, and increasing leads. However, typos, honest or intentional mistakes during signup for email subscription may result in a high bounce rate causing email ISP to flag your domain or IP address as duplicitous. Using email API to check if the email is valid is essential.

What is an Email validation API?

Email application programming interface is a preprogrammed application to check if the email addresses are transferable and valid by removing fake, misspelled, or dark mails. The email application programming interfaces help to ensure that emails are delivered.

How Email validation API works

Email address Validation API is integrated into your website or application to examine syntax and domains’ correctness. The Email APIs verify the emails using a set of stages. These include a syntax check to check for the email prefix and the domain followed by an address name detection to flag any suspicious email names.

The API then conducts a disposable email address (DEA) detection to identify and remove spam emails. The email application programming interface then removes spam traps from the email lists before running the mails through a uniform resource identifier and a DNS-based blackhole list. The mails then pass through MX record lookup to identify any invalid domains before sending the API sends a ping request to the email address server for authentication.

Who should use an Email verification API

If you are tired of hard bounces, complaints about spam, or getting blacklisted by the server, email address verification API is the lifesaver that your business requires. An email verification API is suitable for a first-time user. A new user using emails to reach out to the client can easily misspell or have included the wrong domain.

Email verification API has simple and easy to follow codes that are of use to a developer. This way, the developer does not have to start from scratch while creating a verification form for emails.

Importance of Email APIs

An email address validation API improves your deliverability to nearly 98%, thereby maintaining a high Sender Score and mailbox provider trust. The API’s ability to check if the email is valid will increase conversion rate and ROI as emails get to the intended persons.

What to expect from the APIs

By using Email application programming interface, you should expect an improved customer experience, reduced marketing expenses, enhanced sales efficiency, and excellent sender reputation. One can also use the API to check if the email is valid, suspicious, or spam.

Examples of free Email validation APIs

There are different free email verification APIs that serve different purposes. Some known free email verification APIs include Mailboxlayer,, Verifalia, Email Verifier, and Email Pie.

Best Email APIs

  1. SendGrid
  2. Email
  3. ZeroBounce
  4. Gmail
  5. Verimail
  6. Get Email Information
  7. Outlook Email Check
  8. Regulus Email Validation

Email API SDKs

All Email APIs are supported and made available in multiple developer programming languages and SDKs including:

  1. Node.js
  2. PHP
  3. Python
  4. Ruby
  5. Objective-C
  6. Java (Android)
  7. C# (.NET)
  8. cURL

Just select your preference from any API endpoints page.

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