The email category of our integration knowledge base is now open source. Free forever. This includes: > gmail > outlook mail > resend > sendgrid > postmark > mailgun > mailtrap > smtp2go > agentmail Every one of these has been scraped, tested on the real API, and documented down to the caveats: Most email integrations get you 90% there The agent sends the message, it looks fine, then a line breaks from an encoding issue and the whole thing lands in spam We wrote down the other 10%: Required fields buried in footnotes, pagination, rate limits, auth quirks Point your agent at it and email just works Knowledge should be free What you build with it is what matters