What is MailboxValidator
MailboxValidator checks whether an email address exists and can receive mail. It combines syntax checks, MX record lookups, and mailbox verification in a single API. Teams use it to clean contact lists and protect sender reputation.
Overview
MailboxValidator is an email verification service that validates addresses through multiple checks. It inspects syntax, confirms the domain has valid MX records, and tests whether the specific mailbox exists on the mail server. The tool also flags disposable email providers and role-based addresses like info@ or admin@. Users can validate emails one at a time via API or process large lists in bulk through a file upload. Integrations connect directly to popular email platforms such as Mailchimp, SendGrid, and AWeber.
How to use MailboxValidator
Teams upload a CSV or text file to validate large lists in one batch, or connect the API to check addresses at the point of collection in real time. Clean lists are then exported or synced to connected email platforms before the next campaign send.
Key Features
- Email syntax validation
- MX record verification
- Disposable email detection
- Role-based email identification
- Bulk list validation via file upload
- Real-time single email API checks
- Mailbox existence confirmation
- Integrations with major email platforms
- Free trial with 100 queries
Ideal Customer Profile
Email marketers and developers at startups and mid-market companies who need to clean contact lists and integrate verification into existing workflows.
Best for: Seed, SMB, Mid-market