One door in, four keys
REST (OpenAPI 3.0), SMTP submission, standard IMAP, or a hosted MCP server — same pipeline, same rules. Every inbox works in Thunderbird, mutt, imaplib or your agent framework, no SDK required.
psst… your agents are sending email now
Mail that lands.
For agents
that send.
Mailgentic gives every agent a real inbox — send, receive, reply over API or SMTP — with a security layer built for software that never sleeps: prompt-injection screening, outbound caps, human approvals, and auto-suspension of a compromised agent in under a minute. Reputation and audit trail stay yours.
Email infrastructure was built for people who send a few thousand messages and go home. Agents don't go home. They send constantly, they makemistakes, and sometimes they get hijacked. Mailgentic is built for that.
What's inside
the envelope
everything a sending platform needs, and the bits most of them forget ↓
Webhooks that gossip
Delivered, bounced, deferred, complained, blocked. HMAC-signed, retried, replayable.
The Guardian
Spikes, bounce storms, complaint spikes — spotted in under a minute. Only the misbehaving tenant gets benched. Everyone else keeps sending.
Your own IPs, warmed up
Dedicated pools per tenant, automated warm-up, blocklist monitoring, auto-rotation. Reputation is yours — not your noisy neighbor's.
Receipts for everything
Hash-chained, append-only audit log. Automatic suppression for bounces and complaints.
Inboxes for agents
Give every agent a real address. Receive, read, file, reply — over API, with phishing scoring baked in.
no SDK lock-in, we promise
Speaks every protocol your stack already knows.
The whole API is described in a machine-readable OpenAPI 3.0 spec, served from the relay itself with ReDoc docs. Every inbox is also a realIMAP account and SMTP submission endpoint. And agents can skip HTTP entirely through the hosted MCP server.
REST
OpenAPI 3.0 · 98 paths · idempotent sends · ReDoc at /docs
SMTP
Submission on 465 / 587 · same Shield policy as the API · MAIL FROM pinned to the inbox
IMAP
RFC 3501 / 9051 on 993 / 143 · UIDPLUS, MOVE, IDLE, SPECIAL-USE · folders, flags & labels round-trip
MCP
Hosted JSON-RPC server at /mcp · list, read, reply, move, extract_data · any MCP-capable agent
import imaplib
im = imaplib.IMAP4_SSL("imap.mailgentic.ai", 993)
im.login("agent-7@yourdomain.com", API_KEY)
im.select("INBOX")
_, ids = im.search(None, "UNSEEN")The postal route
1
Stick on a stamp
Sign up, name a mailbox on agents.mailgentic.ai, copy your key. Sixty seconds, no DNS, no card. Bring your own domain whenever you like.
2
Drop it in the slot
Send over REST, SMTP, IMAP or MCP. Quotas, rates, DKIM, suppression and the Shield are applied to every single message, whichever door it came through.
3
Watch it travel
Webhooks tell you where it went. The Guardian keeps the whole post office honest.
Plans
priced on inboxes + emails. nothing else.
Free
$0/mo
3 inboxes
3,000 emails / mo
No overage — hard stop
- Shield inbound verdicts: auth, spam, injection
- All protocols: REST, SMTP, IMAP, MCP
- Shared agents.mailgentic.ai domain
- 30-day retention
Developer
$20/mo
10 inboxes
10,000 emails / mo
$2 per extra 1,000
- Full Shield: DLP, hourly caps, recipient allowlist, auto-suspend
- Your own sending + inbound domains
- AI auto-label & extraction (100k tokens)
- 90-day retention
Startup
$200/mo
150 inboxes
150,000 emails / mo
$1.50 per extra 1,000
- Full Shield + human approvals for risky sends
- Dedicated IP pool with automated warm-up
- Connected Gmail / Microsoft 365 inboxes
- 1-year retention, audit export
Enterprise
Let's talk
Unlimited inboxes
Usage-based
$1 per 1,000, custom base
- Full Shield + in-region classifier
- SSO, SLA, DPA, data-region pinning
- Audit export & SIEM feed
- PoC on your scenario
An “email” is one recipient. Sign up with an email and you are sending in under a minute: new accounts start on the shared agents.mailgentic.ai domain, 50 sends a day, to your own verified address. Upgrading lifts that instantly. Overage is billed monthly; the Free plan simply stops at its limit.
Drop us
a line.
Tell us about your platform and we'll set up a proof of concept — including the compromised-tenant, automatic-stop scenario, live, on your data.
we read every one. promise.