# How does the Email Verifier work?

**The Email Verifier server-tests every email and marks it safe or riskier.**

- **safe:** the email has a 97% deliverability.
- **riskier:** the email has an 83% deliverability.

![Safe emails are server verified with 97% deliverability. Riskier emails sit on catch-all servers and deliver 83% on average. Both cost the same; keep riskier under 30-40% of a list](https://help.evaboot.com/images/illustrations/safe-vs-riskier.png)

## When does verification happen?

- **Automatically** on every email the [Email Finder](https://help.evaboot.com/public/email-finder-verifier/how-does-the-evaboot-email-finder-work/) finds — during every lead export, and on Email Finder jobs. No extra step needed.
- **On your own list** — check any list of email addresses at [dash.evaboot.com/dash/mail/verifier/](https://dash.evaboot.com/dash/mail/verifier/), at **1 credit per email checked**. Malformed lines are dropped and cost nothing.

## Verify your own list

1. **Click Email Verifier** in the left menu, or open [dash.evaboot.com/dash/mail/verifier/](https://dash.evaboot.com/dash/mail/verifier/). Your past verifications are listed there.
2. **Click Verify Emails** at the top right.
   ![The Email Verifier page with Email Verifier highlighted in the left menu and the Verify Emails button highlighted at the top right](https://help.evaboot.com/images/flows/email-verifier/01-open-verifier.png)
3. **Paste your emails** — separate with commas, spaces, or newlines. The counter shows how many unique emails Evaboot recognized.
   - **Or click Upload file** to drop a `CSV` or `XLSX` instead.
4. **Name your verification.**
5. **Click Paste emails to verify** (or **Verify uploaded emails**).
   ![The Email Verifier window: the paste box, the Upload file tab, the name field and the verify button, each highlighted](https://help.evaboot.com/images/flows/email-verifier/02-verify-form.png)

## What techniques are used to verify the emails?

Evaboot uses many different techniques to verify the validity of your emails:

- **SMTP validation:** removes dead, invalid, and unresponsive emails from your list.
- **MX record check:** confirms the email is in use and able to accept mail.
- **Catch-all check:** checks against known catch-all email and domain databases.
- **Domain check:** checks whether the email's domain is real.
- **Spam traps:** uses smart spam-trap indicators to remove honeypots.
- **Disposable check:** detects temporary, disposable, and questionable emails.
- **Syntax check:** confirms the email is typed correctly and all symbols are in place.
- **Graylist-proof:** verifies some of the hardest-to-check ESPs.
- **Risk validation:** removes emails containing high-risk keywords and TLDs.

## Related articles

- [What Does a Riskier Email Mean, and Should I Use It?](https://help.evaboot.com/public/email-finder-verifier/what-is-the-difference-between-safe-riskier-emails/)
- [How Does the Evaboot Email Finder Work?](https://help.evaboot.com/public/email-finder-verifier/how-does-the-evaboot-email-finder-work/)