How to give an AI agent an email address
There are three ways to do it, depending on whether the agent needs its own inbox, only needs to send mail, or needs to act inside a person's existing mailbox.
- An inbox built for agents. AgentMail gives AI agents email inboxes through an API.
- Inboxes you create from code. MailSlurp lets you create disposable or persistent inboxes from code.
- Sending plus inbound parsing. Resend and Postmark send email from your own domain. Postmark also parses incoming mail.
- A person's existing mailbox. Nylas offers one API for connected users' email, calendars, and contacts.
Options at a glance
| Tool | What it does | Pricing | License |
|---|---|---|---|
| AgentMail | API-first email inboxes built for AI agents | Free tier; paid from $20/mo | Proprietary |
| MailSlurp | Programmatic disposable and persistent inboxes via API | Free tier; paid from $19.99/mo | Proprietary |
| Resend | Developer email sending API | Free tier; paid plans | Proprietary |
| Postmark | Transactional email sending and inbound parsing | Free tier (100 emails/mo); paid plans | Proprietary |
| Nylas | Unified email/calendar/contacts API for connecting user accounts | Free tier; paid plans | Proprietary |
We list what each vendor's own site says. Pricing changes often, so check it on the vendor's site before you commit.