Yes. Atomic Mail is free: add it to your Claude Market library, no bank card needed.

How do I install Atomic Mail in Claude?

Add Atomic Mail to your library to get its URL. In Claude, open Settings › Connectors, click “Add custom connector” and paste the URL.

Does Atomic Mail work with Claude Code?

Yes. In a terminal, run claude mcp add --transport http followed by a name and the connector URL.

Is Atomic Mail an official Anthropic product?

No. Atomic Mail is a public project; this listing was created by Claude Market from its repository and the product is not hosted here. Claude Market is an independent project, not affiliated with Anthropic.

Atomic Mail

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Listing created by Claude Market from the project’s public repository. Not hosted here.Is this your project? Claim this listing ›

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

All reviews:: No reviews
Release date:: 3 November 2026
Creator:: Public project (github.com)
Type:: MCP

Add Atomic Mail

Free · Added to your library, no credit card needed.

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About Atomic Mail

Atomic Mail Agentic is an email provider for autonomous AI agents: each agent registers its own real inbox, with a free account, 100 MB of storage and custom domains. Its stdio MCP server uses JMAP and proof-of-work authentication so Claude can send, receive and read email.

Details

Version:: 0.3.33
Updated:: 12 November 2026
Verification:: Not verified
Repository:: github.com/Atomic-Mail/atomic-mail-agentic
Website:: atomicmail.ai/

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What it can do

The creator has not described the access yet.

Install Atomic Mail in Claude

An MCP connector links Claude to a service: Claude can then read or do things there for you, with your consent. It takes about two minutes.

Add it to your libraryClick “Add to my library” on this page: it is free and instant.
Copy the connector URLIn your library, select the product: its URL is shown with a “Copy” button.
Add it in ClaudeIn Claude (website or app), open Settings › Connectors, click “Add custom connector”, give it a name and paste the URL.
Connect your accountIf the service asks you to sign in (your Notion, GitHub… account), Claude opens its page: only grant the access you need.
Use it in a conversationTurn the connector on in the conversation’s tools menu, then just ask for what you want.

With Claude CodeIn a terminal: claude mcp add --transport http connector-name followed by the URL copied from your library.

Before adding a product, read its permissions above. You can remove a connector or skill at any time in Claude’s settings.

Atomic Mail: frequently asked questions

Is Atomic Mail free?: Yes. Atomic Mail is free: add it to your Claude Market library, no bank card needed.
How do I install Atomic Mail in Claude?: Add Atomic Mail to your library to get its URL. In Claude, open Settings › Connectors, click “Add custom connector” and paste the URL.
Does Atomic Mail work with Claude Code?: Yes. In a terminal, run claude mcp add --transport http followed by a name and the connector URL.
Is Atomic Mail an official Anthropic product?: No. Atomic Mail is a public project; this listing was created by Claude Market from its repository and the product is not hosted here. Claude Market is an independent project, not affiliated with Anthropic.

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