Mailfox

Get alerted instantly when your transactional emails bounce or fail

WebNewAccount requiredfreemiumglobal

A web app that monitors transactional email delivery and sends immediate alerts when messages bounce, go undelivered, or are marked as spam. Built for developers, SaaS teams, and business owners, it connects via webhooks to major providers (Mailgun, SendGrid, Postmark, Resend, Mailjet, Brevo) and provides concise, actionable guidance to diagnose and fix delivery problems with a one-minute no-code setup.

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Problem & pain-point mapping
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What it's a strong alternative to
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