What this tool does
The Email Validator checks email addresses in your Airtable table for validity and writes a status result to an output field. It runs a series of checks you configure, from format validation to DNS-level deliverability checks.Settings reference
Source
| Setting | Description |
|---|---|
| Source table | The table with email records. |
| Source field | The Email or Single Line Text field containing email addresses. |
| Output field | A text field where the validation status is written. |
Validation checks
| Check | Description |
|---|---|
| Format check | RFC 5322 syntax validation. Checks that the email is structurally valid. |
| MX record check | DNS lookup for mail exchanger records. Confirms the domain can receive email. Requires a network request per unique domain. |
| Disposable email detection | Flags addresses from throwaway providers (Mailinator, Guerrilla Mail, etc.). |
| Typo suggestions | Detects common domain misspellings and appends a correction hint to the output. |
Handling
| Setting | Description |
|---|---|
| Skip empty fields | Skip records with no value in the source field. |
| Overwrite existing output | Write to the output field even when it already has a value. |
What is written to the output field
The tool writes a status string to the output field for each record. The value indicates the result of the validation checks:Valid: passed all enabled checksInvalid format: failed the syntax checkNo MX record: domain has no mail exchanger recordDisposable email: flagged by the disposable email detection listPossible typo: did you mean xyz.com?: typo suggestion appended (when enabled)
Preview
The Email Validator has a preview panel that shows a sample of your email records with the validation result for each. Review results before committing the run.MX record checks
The MX record check makes a DNS lookup for each unique domain in your records. This confirms the domain has a mail exchanger configured, a strong indicator that the email address can receive mail.MX record checks add network latency. A table with many unique domains will take longer to process than the same table without MX checks.
Common use cases
- Clean up a contact list before sending a campaign
- Score leads by email quality
- Flag invalid emails for review before exporting data
- Identify disposable signups in a user database
Common questions
Does a passing MX check guarantee email delivery?
Does a passing MX check guarantee email delivery?
No. An MX record confirms the domain can receive email, but individual addresses may still bounce. Use the Email Validator as a signal, not a guarantee.
Can I use this tool on form data to validate emails before they enter Airtable?
Can I use this tool on form data to validate emails before they enter Airtable?
For real-time validation on form submission, use the email field’s built-in validation options (block disposable emails, verify with OTP). The Email Validator tool is for bulk validation of existing data.
What disposable email providers does it detect?
What disposable email providers does it detect?
The tool uses the MailChecker library, which maintains a list of hundreds of known disposable email providers and domains.