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How Email Verification Works

How does email validation work?

Try our free demo to see for yourself. We do a full check to ensure the actual mailbox is valid and able to accept emails. Integrate this into your own app or signup forms using our API, or simply upload a list in our easy-to-use dashboard.


There are essentially 3 steps to do this properly. Many services and scripts out there only do one or two stages. You gotta do all 3 otherwise it ain’t worth doing!

 

1. Syntax/format checking
This is to ensure that the email meets certain basic criteria such as whether it contains an ‘@’ sign etc.

2. Domain checking
Does the email address have a valid domain name? Is the domain name configured to accept email at all?

3. Mailbox checking
Is the part before the ‘@’ sign a valid mailbox? This is the really clever part, and what sets our service apart from many others.

Below is a graphic to help explain it!

Try it Now! Upload a batch file or see our real-time API service.

Full Email Validation
Try it Now! Upload a batch file or see our real-time API service

In Summary

1. We check the overall syntax of the email address to see if it is correct, e.g. does it contain an @ sign or any invalid characters?

2. We check the domain to see if it exists, and if so is it configured to accept email? If all good so far, we’ll then look at the mailbox i.e. the part before the @ sign.

3. We check the mailbox i.e. “zakyray897” directly with the ISP. In this case it is Hotmail, to see if it exists or not.



Suggested Reading

  • Email Validation Bootstrap API Snippet
  • Validate Email Format In 2 Seconds
  • Email Validation Software Online
  • Email List Building 101
  • Regain List Sanity: Email Cleaner Online
  • Clean Email List Management
  • Verify Email Bounce and Lower Return Rates

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