# Mailbux

Real business mailboxes for your bots: read, search, label, draft and send email with a Mailbux app password.

- Category: Productivity
- Connection: App password. Paste your own Mailbux app password once. It is stored encrypted and only your workspace uses it.
- Plans: Free: Included; MCP only: Included; Pro: Included; Max: Included
- Consent: Sending consent (https://krypton.bot/terms/#publishing). Before Mailbux connects, you confirm the sending consent: your bots send and move messages as you, and you are the sender of every message.
- Vendor site: https://mailbux.com

## Tools

- List accounts (`mailbux_list_accounts`): List the Mailbux mailboxes connected to this workspace (addresses only).
- List mailboxes (`mailbux_list_mailboxes`): List the mailbox's folders (Inbox, Sent, Drafts, Trash and your own) with their role and unread count.
- List recent (`mailbux_list_recent`): The newest emails in one mailbox (default Inbox).
- Read email (`mailbux_read_email`): Read one email: headers, plain text body and attachment names. Reading does not mark it read.
- Read thread (`mailbux_read_thread`): Every email in a conversation, oldest first, as summaries. Read one with mailbux_read_email.
- Create draft (`mailbux_create_draft`): Save a draft in Drafts (nothing is sent). Use reply_to to answer an email in its thread.
- Label (`mailbux_label`): Add or remove labels: `add_mailboxes`/`remove_mailboxes` file an email in more than one mailbox; `add_keywords`/`remove_keywords` set custom keywords (tags).
- Mark (`mailbux_mark`): Mark emails read or unread, and flagged or not.
- Move (`mailbux_move`): Move emails into one mailbox (they leave every other mailbox).
- Search (`mailbux_search`): Search email, newest first. Combine `text` (anywhere), `from`, `to`, `subject`, `mailbox`, `after`/`before` (ISO dates), `unread` and `has_attachment`.
- Send (`mailbux_send`): Send an email from the mailbox (saved to Sent). Confirm recipients and content with the user first. Pass `draft_id` to send a saved draft instead.
- Trash (`mailbux_trash`): Move emails to Trash. Nothing is destroyed; Mailbux empties Trash on its own schedule.

## Skills included

- mailbux-inbox-triage: Use when the user wants a Mailbux inbox sorted into needs a reply, read later and done, with a one-line summary each.
- mailbux-reply-drafts: Use when the user wants replies prepared for waiting Mailbux emails; drafts short answers in each thread for the user to check.
- mailbux-follow-ups: Use when the user wants to chase unanswered Mailbux emails; finds sent mail with no reply after a few days and drafts follow-ups.
- mailbux-daily-digest: Use for a morning summary of the last day of Mailbux email: important messages, dates mentioned and the replies the user owes.

## Questions

### How do I connect Mailbux to Krypton?

Open Integrations in Krypton, find Mailbux and choose Connect, then paste your app password. Every bot in the workspace can then use it, and you choose which bots get which apps.

### Which plan includes Mailbux?

Included on every plan, Free too.

### Can I use Mailbux from Claude or Cursor?

Yes. Connect it in your workspace, then add https://mcp.krypton.bot as a streamable HTTP MCP server with your kmcp_ workspace key. Included on every plan, Free too.

Back to the [MCP catalog](https://krypton.bot/mcp-catalog/).