About Protonmail MCP Bridge
Protonmail MCP Bridge is an MCP server in the Browser category: dockerized official Proton Mail Bridge (headless) + streamable-HTTP MCP server with bearer auth exposing full read/write mail tools.
Install
git clone https://github.com/benniblau/protonmail-mcp-bridgeThis server has no ConduID identity, so agent calls to it are not receipted. Pin the version you install and review the source before granting it credentials.
Tools (11)
delete_messageDelete a message
Parameters not published.
flag_messageStar/flag or unflag
Parameters not published.
forward_messageForward to new recipients
Parameters not published.
get_attachmentOne attachment's bytes as base64
Parameters not published.
get_messageFull message: text, html, headers, attachment list
Parameters not published.
list_foldersList all folders/labels
Parameters not published.
mark_readMark read/unread
Parameters not published.
move_messageMove to another folder
Parameters not published.
reply_messageReply (threading preserved; `reply_all`)
Parameters not published.
search_messagesSearch a folder (free-text `query`, `unseen_only`, `limit`); returns summaries with `uid`
Parameters not published.
send_messageSend new mail (to/cc/bcc, html, attachments)
Parameters not published.
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