Here. In your box.
Any name @tomanacaixa.com is already yours. Use it for sign-ups, get codes instantly and let it vanish in 48h. There’s an open API for AI agents too.
Tip: obvious names (like “test”) are seen by everyone. Roll a random one!
Tip: obvious names (like “test”) are seen by everyone. Roll a random one!
How it works
- 1
Pick a name
Anything goes: fada, goblin-gold-4821, your-project. Nothing to create.
- 2
Use the address
Paste name@tomanacaixa.com into whatever sign-up, newsletter or test asks for an email.
- 3
Grab the loot
Emails drop into the chest in real time. Verification codes are highlighted.
Your agent needs an email? One line.
No key, no SDK, no sign-up. The agent picks a name, uses the address and long-polls for the code. We even extract the OTP for it.
Read https://tomanacaixa.com/skill.md and use it to receive emails and verification codes.
Read the agent guide# 1. get a unique name
NAME=$(curl -s https://api.tomanacaixa.com/v1/random | jq -r .inbox)
ADDR="$NAME@tomanacaixa.com"
# 2. use $ADDR in the sign-up form
# 3. wait for the email (up to 60s) and grab the code
curl -s "https://api.tomanacaixa.com/v1/inboxes/$NAME/wait?timeout=60" \
| jq -r '.messages[0].codes[0]'Everything a proper chest has
Real time
It arrives, it shows up. No refresh, via Server-Sent Events.
Codes highlighted
OTPs and confirmation links are extracted automatically.
Open API
Plain JSON, open CORS, long-poll and SSE. No key.
Attachments & .eml
Download attachments or the full original email.
No sign-up
No account, no password, no tracking cookies.
Gone in 48h
Everything is deleted automatically. Nothing lingers.
Beware of the Mimic!
Every inbox is public: anyone who knows the name can read it. Don’t use it for banking, your main email or any account you want to keep. Use a real email for that.
FAQ
What is a temporary email?
A throwaway address you use when you don’t want to share your real one: quick sign-ups, downloads, QA testing. On Toma na Caixa any name@tomanacaixa.com works instantly, no account needed.
Do I need to sign up?
No. Just open tomanacaixa.com/your-name or send an email to your-name@tomanacaixa.com. The inbox “exists” as soon as the first email lands.
How long are emails kept?
48 hours. After that they’re deleted automatically, attachments included. Each inbox keeps at most 200 emails.
Can other people see my emails?
Yes. Inboxes are public and have no password: anyone who knows the name can read them. Use hard-to-guess names (the “Random name” button helps) and never use them for important accounts.
Can I send emails from here?
Not yet. For now Toma na Caixa only receives. Sending is on the roadmap.
Is there an API? Do I need a key?
Yes, and no key needed. It’s plain JSON over HTTP, limited to 60 requests per minute per IP. See the API docs and the agent guide.
Does it work with AI agents (Claude, GPT, etc.)?
It was built for that. There’s a ready-made skill at tomanacaixa.com/skill.md and a long-poll endpoint that waits for the next email and returns the verification code.
Do some sites block this domain?
Some sites block disposable emails. If a sign-up refuses the address, that service doesn’t accept temporary inboxes.