
Email verification tools ensure your lists go through checks such as syntax, domain, catch-all, MX record, and email address ping. This is a simplified explanation; in reality, verification algorithms are complex, multi-step, and involve various methods that directly or indirectly, and in combination, determine the most accurate email verification results.
For Example:
- Syntax - a simple check to ensure the email address conforms to common standards.
- Domain - a lookup on the domain element of the email address to ensure it is configured to accept emails.
- SMTP check - the really clever bit, where we check that the user mailbox exists. By checking with a would-be recipient’s email server via SMTP, we can often see whether a user for a given email address actually exists.

Important:
We do not physically send emails, so email verification is a safe process for your recipients.
There are several ways to verify your email database.
It’s simple—create an account and select one of the following options:
Verify your email lists using the Proofy web interface:
- Upload your email lists via the web interface.
- Click “Proof” and wait for the process to complete.
- Download the verification results as valid or custom presets once finished.
Set up secure email verification by directly connecting to your email database from your service or server:
- Upload your email lists via the web interface.
- API verification is fast and secure but requires technical expertise to integrate the code into your server.
- For setup details, refer to the Proofy API Docs.
Ideal for single email verification in registration or subscription forms.(An excellent way to block temporary or invalid emails):
- Embed the widget code into your website using our detailed documentation.
Choose the method that best suits your needs and start verifying your emails quickly and reliably!
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The Proofy team has been in the email security and privacy business for 9 years. We’ve built a fast, secure, powerful verification tool. Proofy’s years of experience allow us to achieve a level of performance and
accuracy that sets us apart.