Send transactional and marketing email through one API — with scoped keys, approval gates, and a complete audit trail when your AI agents do the sending.
Trusted by teams running agent email in production
Everything a modern sender needs — plus the control layer agents require. One API, one audit surface, zero infrastructure to run.
Point any MCP client — Claude, Cursor, custom agents — at SendFlit. The agent can draft, segment, schedule, and analyze. It cannot exfiltrate or bypass policy.
import { SendFlit } from "@sendflit/node";
const sf = new SendFlit(process.env.SENDFLIT_API_KEY);
await sf.emails.send({
from: "billing@acme.com",
to: "customer@acme.com",
template: "invoice",
vars: { id: 4821 },
});Admins set the gates: broadcast size, new domains, external recipients. Agents draft and queue — a human approves. The decision is logged.
growth-bot requests to send “Q3 product update” to 412 contacts
Send-only keys for agents. No PII export, no domain changes, no billing.
Per-domain DKIM keys sign every message. Verified before first send.
Delivered, opened, bounced, complained — POSTed to your endpoint in real time, with retries.
From AI-first startups to regulated enterprises — teams run agent email on SendFlit, governed and audited.
“Our agent drafts outreach for 40,000 contacts a week. Approval gates mean every broadcast is human-checked — and every decision is in the audit log.”
“Security review took six days, not a quarter. Scoped agent keys with no PII export was the line item that closed it.”
“Support-ai answers tickets and sends confirmations through one API. p95 under 300ms means the email is out before the customer blinks.”
Three lines to first send — or hand the keys to your agent and stay in control.
Invoices, receipts, and alerts with a REST call or SMTP. Templates, tags, and webhooks — the API you already know.
Point any MCP client at SendFlit. 13 governed tools — draft, segment, schedule, analyze — under your policy gates.
Set domains, gates, and templates in the dashboard. Broadcasts over the policy threshold route to a human for approval.
The controls security teams ask for — auditability, least privilege, data boundaries — are architecture, not add-ons.
Start free today. Govern every agent send from day one.