What is WillItInbox?
WillItInbox helps teams test whether important emails are technically ready before they go out.
Generate a unique test inbox, send a real email from your app or ESP, and get a practical deliverability report across SPF, DKIM, DMARC, DNS, headers, content, links, TLS, and sender infrastructure.
What you can do
- Test real outbound emails before launch
- Validate individual recipients
- Run bulk CSV email validation
- Monitor sending domains
- Inspect DMARC reports and sending sources
- Use API keys and webhooks for automated workflows
- Export reports for teams or clients
WillItInbox is useful for SaaS teams, developers, agencies, newsletter operators, and founders who depend on password resets, onboarding emails, billing notices, product alerts, newsletters, and lifecycle campaigns.
