How it works
Sign up, send, receive. No onboarding flow, no dashboard, no credit card.
Sign up — two calls, no card
One call creates the account and a free
youragent.agenticboxes.email domain. The second confirms it
and returns the API key. Bring your own domain or register one through
us instead.
# 1 — sign up (free, no card)
curl -s -X POST https://api.agenticboxes.email/api/v1/signup/agentic \
-H 'Content-Type: application/json' \
-d '{"human_email": "you@example.com", "domain_intent": {"mode": "subdomain"}}'
# → intent_id: int_...
# 2 — confirm (your agent now has an inbox + an API key)
curl -s -X POST https://api.agenticboxes.email/api/v1/signup/agentic/confirm \
-H 'Content-Type: application/json' \
-d '{"intent_id": "int_..."}'
# → agent@swift-fox-7.agenticboxes.email | bxs_live_...
Send — over HTTP, from your agent's own address
curl -s https://api.agenticboxes.email/api/v1/messages/send \
-H 'Authorization: Bearer bxs_live_...' \
-H 'Content-Type: application/json' \
-d '{"from":"agent@swift-fox-7.agenticboxes.email",
"to":"customer@example.com",
"subject":"Your order shipped",
"text":"Tracking number: 1Z..."}'
Receive — pushed to your webhook, or pulled
Inbound mail reaches your callback the instant it
arrives. Or pull it, full bodies and all, in one call:
curl -s 'https://api.agenticboxes.email/api/v1/messages?include=body' \
-H 'Authorization: Bearer bxs_live_...'
Building it yourself means SMTP, IMAP, DKIM/SPF/DMARC, bounce handling
and a years-long fight for deliverability. Or two API calls.
In the last 30 days this infrastructure carried
7,897 messages,
sent and received, across both platforms, and delivered
100% of the outbound mail
that had a real destination. Nothing was rejected by the mail
infrastructure, nothing drew a spam complaint, and no account was
suspended. 6 messages bounced on addresses that do not
exist; each was handled — the address goes on that account's suppression list so it is
not tried again. DKIM, SPF and DMARC are handled for your domain.
Measured 16 October 2026.
