MailboxValidator
Secure and reliable email validation service to check for invalid email addresses.
MailboxValidator is an email validation service that connects to a mail server to check whether a mailbox exists. It helps reduce email bounce rates and improve sender reputation by identifying invalid, disposable, role-based, or suppressed email addresses. Users can upload email lists in text or CSV format for bulk cleaning, or validate single addresses through an API that returns results in JSON or XML.
The service includes features such as email syntax checking, MX record and mail server connection checks, greylisting detection, and checks for free or disposable email providers, role accounts, suppressed emails, and DMARC enforcement. It also offers a duplicate email remover, a website existence checker, and a strict SPF checker. Integrations are available with platforms including MailChimp, SendGrid, AWeber, Mailgun, ActiveCampaign, HubSpot, Campaign Monitor, Zapier, and ChatGPT MCP.
MailboxValidator is aimed at email marketers and developers. It offers a free bulk trial with 100 queries and a free API plan with 300 queries per month. Paid bulk plans are available with query allowances ranging from 1,000 to 1,000,000 queries, while paid API plans offer monthly subscriptions with allowances from 3,000 to 375,000 queries per month. All plans have a 30-day validity period.
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