Agent Temp Mail vs AgentMail: which does your agent need?
Similar names, different jobs. AgentMail gives agents full mailboxes that send and reply; Agent Temp Mail gives them a free, private inbox for receiving codes.
The names are close, and both give AI agents an email address, so people mix them up. They’re built for different jobs. AgentMail is a mailbox platform: an account, an API key, and inboxes that send and keep threads. Agent Temp Mail is built for the job most agents actually have with email—receiving the code, the link, or the confirmation, and moving on—with no account at all.
For that job, here’s why Agent Temp Mail is the better fit.
Side by side
| Agent Temp Mail | AgentMail | |
|---|---|---|
| To get an inbox | Generate a key; that’s it | Create an account, then call the API with your key |
| What the agent holds | One key for one inbox | An account API key or an OAuth session |
| Codes and links | Extracted automatically, with context | Not documented; the agent reads the raw message |
| Number of inboxes | As many as you need | 3 free; 10 for $20 a month; 150 for $200 a month |
| Address lifetime | Never expires | Until the inbox is deleted |
| MCP server | Official, local and hosted; signs outside the model | Official, hosted |
| ChatGPT | Read link, no account needed | App that requires an AgentMail account |
| Email safety | Text only, links never opened, every message marked untrusted | Full messages, including HTML and attachments |
| Outbound email | Receive-only by design | Sends and replies |
| Price | Free | Free tier, then $20 or $200 a month |
AgentMail details from its pricing page and documentation, checked 10 October 2026.
Why Agent Temp Mail fits agents better
No account standing between the agent and its inbox
With AgentMail, somebody creates an account and provisions a key before the agent can receive anything, and the free plan stops at three inboxes. With Agent Temp Mail, the agent generates a key and the address is live, in the same instant, as many times as you like. One address per agent, per task, per test run costs nothing.
A smaller blast radius
AgentMail grants access at the account level, through an API key or an OAuth session, rather than through a key tied to a single inbox. If an agent that reads untrusted email is ever tricked into revealing that credential, everything it can reach is exposed. An Agent Temp Mail key opens exactly one inbox and can’t send anything. Through the local MCP server, the key never even enters the model’s context.
The code, not the whole email
Agent Temp Mail hands the agent the likely code or verification link with the sentence around it. AgentMail doesn’t document code extraction, so the agent reads the full message and works it out—more tokens, more room for mistakes, and more exposure to whatever an attacker wrote in the email.
Safe by default
Messages are reduced to plain text with every link’s real destination written out. Nothing in them is ever opened, loaded, or run, and each response is labeled untrusted so the agent treats it as data. Receive-only also means a hijacked agent can’t be turned into a sender. Why that matters.
Free, with addresses that last
There are no plans to outgrow. Addresses never expire, so accounts your agent creates keep a working recovery address, while the messages themselves clear after 24 hours by default.
When AgentMail fits
If your agent’s job is writing to people—outreach, support replies, scheduling—it needs a mailbox that sends, and that’s what AgentMail is for. Many teams pair the two: a sending mailbox for correspondence, and Agent Temp Mail for every sign-up, verification, and test, so the main mailbox stays clean and the codes stay private.
Get started
Give Claude Code, Codex, or Cursor an inbox with one command, or tell ChatGPT to use agent-temp-mail.com. The setup guide covers every path, and AgentMail alternatives compares more options.
Sources
- AgentMail: pricing, inboxes, MCP, reply extraction, ChatGPT app
- Agent Temp Mail: llms.txt
- AgentMail is a trademark of its owner, used here for identification only. Agent Temp Mail isn’t affiliated with it.