Disposable email for agents: create an inbox, wait for the message, read the code. No key needed.
Connect Remote server
claude mcp add --transport http mcp https://grabmail.io/mcp
{
"mcpServers": {
"mcp": {
"url": "https://grabmail.io/mcp"
}
}
}
{
"servers": {
"mcp": {
"type": "http",
"url": "https://grabmail.io/mcp"
}
}
}
Settings > Connectors > Add custom connector
URL: https://grabmail.io/mcp
Tools 6 found in our last check
create_inboxInvent a fresh, unused disposable email address you can give out immediately. Nothing is created or reserved server-side — an address exists as soon as mail arrives at it — so this never fails and needs no account. Public domains: grabmail.io, mixozia.com, linqmail.com. With a p…
list_domainsThe public domains anyone may use. A domain of your own needs no account or key either — just an MX record pointing here. These public domains are on disposable-mail blocklists; if a form rejects them, see the premium pool noted in the result. With a paid key sent as Authorizati…
list_messagesEverything waiting at an address, newest first. Returns immediately, including when the mailbox is empty — use wait_for_message if you are expecting something that has not arrived yet.
read_messageThe full message: sender, subject, plain text, HTML and any attachments. This is where a confirmation code or a sign-in link will be. Read `text`: when the sender shipped HTML only, as most transactional mail does, it holds a plain-text rendering of that HTML rather than nothing…
wait_for_messageBlocks until a new message arrives at the address, then returns it in full — the tool to use after submitting a sign-up form. Waits at most 25 seconds and then returns with timed_out set to true; call it again to keep waiting. Optionally waits for a message from a particular sen…
delete_messageRemove a message now rather than waiting for it to expire. Idempotent.
Details
| Endpoint | https://grabmail.io/mcp (Streamable HTTP) |
| First published | 22 Sep 2026 |
| Last updated | 22 Sep 2026 |
| Registry name | io.grabmail/mcp |
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