dev.workers.cybermax-tools.cybermax/send-email
Letterkeel: Send Email via SMTP, Resend, SendGrid & Mailgun
Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark
needs auth probed 2026-10-11 · HTTP 401 · Bearer
Streamable HTTP error: Error POSTing to endpoint: {"error":"invalid_token","error_description":"Missing or invalid access token. Pass an Apify API token in the - Endpoint
- https://mcp.apify.com/?tools=cybermax/send-email&via=mcp-registry (streamable-http)
- Host
- mcp.apify.com
- Website
- https://cybermaxtools.com/store/letterkeel-send-email/
- Registry
- active, updated 2026-10-10 · registry entry
- Reachable
- 1 of the last 1 probe
Badge and feed
[](https://mcpcost.ulehla.dev/s/dev.workers.cybermax-tools.cybermax/send-email)
An entry for every probe that changed the result, the tool count or the token cost: Atom feed. Add it to a feed reader or a Slack RSS app to hear when the server stops answering or its tool set grows.