How to Automate OTP Extraction and Email Testing in n8n with Disposable Inboxes

If you've ever tried to automate signup flows or OTP-based authentication testing in n8n, you've probably hit the same wall — there's no clean way to receive emails as a workflow trigger without setting up your own mail server or polling an IMAP node that drops events under load. I ran into this exact problem while building OpenInbox , a disposable email API. So I built an n8n community node for it. Here's what it does and how to use it. The problem with IMAP polling in n8n n8n's built-in email