namailuWhen an agent writes the email, it needs its own mailbox
Connect namailu.cz to Claude or ChatGPT and your agent can send a message with attachments — on its own, from its own address, under its own limit. Free, no card.
The difference
An agent is not your mail client.
Hand an automation the keys to your own mailbox and it gets everything: old mail, contacts, invoices, password resets. Anything it sends goes out in your name. Here it works the other way round — the agent gets its own mailbox, with its own address, its own credentials and its own quota.
- You can tell who wrote what. A message from the agent carries the agent's address, so your sent folder shows which was the program and which was you.
- Revoking access is one click. Delete the agent's mailbox and your own mail is untouched — no changing a password you also log in with.
- A looping agent hits a ceiling, not your reputation. The quota sits on its mailbox; when it runs out, it gets an error that says so.
Attachments
A message without a file is half the job.
Most mail integrations handle text. For an invoice, a report or a photo the agent has to upload the file somewhere and send a link — and then the recipient's filter decides whether that link survives. Here the agent attaches the file to the message itself.
- Up to 10 MB per message. Enough for an invoice, a report or a set of photos.
- Uploaded in verified chunks. The model neither reads nor rewrites the file between chunks — the server checks SHA-256, so the recipient gets exactly the bytes that left the source.
- Works without storage of its own. No public file URL that quietly becomes a permanent link to private data.
In practice
Three sentences in a chat, one finished message.
- Add namailu.cz as a connector in Claude or ChatGPT and approve access to the agent's mailbox once.
- Say what should go out — to whom, about what, with which file.
- The agent composes the message, uploads the attachment and sends it from its own address. You see it in the sent folder.
The same tools work outside a chat too: through the API when you write your own program, or over SMTP and IMAP when you already have one.
What's free
Not a trial. An account that stays.
- 2 mailboxes, one of them agent-owned.
- 200 recipients per month of outgoing mail.
- 1 custom domain — the address can be yours rather than ours, even on the free plan.
- Attachments, MCP, API, SMTP and IMAP at no extra cost. Paid plans add capacity, not features.
We run no ads, so there is no reason to read your mail. And when you leave, you take your data with you.
Frequently asked
What people ask most.
Does it work with Claude and ChatGPT?
Yes — both can connect external tools over MCP. You add the connector in the client and approve access to the agent's mailbox once; no password gets copied anywhere.
Can the agent really send attachments?
Yes, and that is the main difference from a plain mail integration. The file is uploaded in chunks, the server verifies its SHA-256 digest and attaches it to the message itself — the recipient gets the file, not a link.
Can the agent see the rest of my mail?
No. The agent has its own mailbox and cannot see the others. Access can be revoked at any time without changing the password you log in with.
What if the agent gets stuck in a loop?
It hits the quota on its own mailbox and gets an error that says so. Your sender reputation and your other mailboxes are unaffected.
Do I need a card?
No. The free account needs no card and has no trial period that quietly ends.