SadaSend is a transactional email API built for developers who let AI agents send email on their behalf. Giving an autonomous agent email access shouldn't mean handing over your entire account. SadaSend provides native agent guardrails enforced at the API layer before a message reaches the delivery queue: • Scoped API Keys: Restrict keys to explicit permissions (send, read) so agents can never mint credentials or delete domains. • Recipient Allowlists: Ensure agent-triggered mail can only reach approved domains or test addresses (e.g., @yourteam.com). • Approval Mode & Dry Run: Hold sensitive sends for human approval or test templates safely without sending. • Hosted MCP Server: Direct integration with Claude and other MCP clients (mcp.sadasend.com) with zero local setup. • Strict Deliverability Enforcement: Built-in verification for SPF, DKIM, DMARC, and RFC 8058 one-click unsubscribe headers to keep sending domains compliant with Gmail and Yahoo 2026 requirements. SadaSend gives your agent email capabilities — without handing over your whole account. 🌐 Website: https://sadasend.com & support@sadasend.com 📚 Documentation: https://sadasend.com/docs