Use cases

What developers and their agents send through AgentiSend, one page per job: the mail, the guardrail that applies to it, and the docs page to start from.

Support agent replies
A support agent replies to someone who already wrote in. The key has a ceiling, and mail to your own domain is not received here yet.
Receipts from a store agent
A store agent sends a receipt after a payment. The key's ceiling is a monthly count, and each address on the message counts as one.
Sign-in codes
A sign-in agent sends a code or a link to one person who asked for it. The same code to the same address is held once it repeats.
Agent daily digest
An agent sends one digest a day to people who already receive it. The same digest sent again inside the window is held.
Alerts from a monitoring agent
A monitoring agent pages a person about a check you already run. The same alert text to the same address is held when it repeats.
Approval-gated announcements to existing customers
An announcement goes to people who already have an account with you, and a person approves it before it sends. Cold outreach in any form is refused.
Onboarding sequence run by an agent
An agent sends the first welcome, then later notes on a schedule, to someone who just created an account. There is no delay step.