SendFast

This lets Claude draft, edit, and send marketing emails directly from your verified domain through SendFast's API. You get operations for composing email content, generating screenshots for preview, and triggering sends without leaving your workflow. Reach for this when you're building agents that need to handle transactional or marketing email campaigns autonomously, or when you want Claude to iterate on email copy and ship it once it's right. The streamable HTTP transport means it works through Claude's web interface without local setup. Useful if you're already using SendFast for email infrastructure and want to wire it directly into conversational workflows instead of context switching to their dashboard.