About Proton Bridge MCP
Proton Bridge MCP is an MCP server in the Other category: local MCP server exposing Proton Mail Bridge to Claude over loopback IMAP/SMTP.
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Install
git clone https://github.com/Considus/proton-bridge-mcpThis 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 (34)
ack_folderConfirms a batch was handled
Parameters not published.
apply_labelTags a message, leaves it where it is
Parameters not published.
bulk_apply_labelOne label onto many messages
Parameters not published.
bulk_delete_labelsThe same for several labels at once, gated
Parameters not published.
bulk_markRead, unread, star or unstar many messages in one pass
Parameters not published.
bulk_moveFile or Trash many at once, gated
Parameters not published.
bulk_remove_labelTakes one label off many messages, gated
Parameters not published.
create_draftWrites into Drafts, never sends
Parameters not published.
create_folder_or_labelNew folder or label, gated
Parameters not published.
delete_draftMoves a draft to Trash, gated
Parameters not published.
Show all 34 tools
delete_labelDeletes a label, messages keep their place and lose the tag, gated
Parameters not published.
find_threadThe whole conversation, and which messages carry documents
Parameters not published.
folder_statusCounts, plus the UIDVALIDITY every uid in that folder depends on
Parameters not published.
forwardGated
Parameters not published.
get_headersHeaders with SPF, DKIM and DMARC verdicts, and Proton metadata
Parameters not published.
list_attachmentsReal documents, kept apart from inline images and PGP keys
Parameters not published.
list_foldersEvery folder and label, read live each time
Parameters not published.
markRead, unread, star, unstar
Parameters not published.
move_to_folderFiles it somewhere else
Parameters not published.
poll_folderWhat has arrived since you last looked
Parameters not published.
purge_attachmentsDeletes those files now
Parameters not published.
read_attachmentPulls the text out, PDFs included
Parameters not published.
read_messageFull headers and body
Parameters not published.
remove_labelTakes a label off, leaves the message where it is, gated
Parameters not published.
replyReplies with correct threading, gated
Parameters not published.
reply_allSame, with your own addresses stripped from Cc, gated
Parameters not published.
save_attachmentWrites a file out, deleted again after 15 minutes unless you say otherwise
Parameters not published.
search_all_mailThe same search across every folder and label, duplicates collapsed
Parameters not published.
search_mailSearch by text, sender, subject, date range, unread, starred; optionally report each message's other labels and folders
Parameters not published.
sendGated, and can carry attachments
Parameters not published.
send_draftSends a saved draft, gated
Parameters not published.
unsubscribeReports how to unsubscribe, and can send the email form
Parameters not published.
update_draftReplaces a draft, keeping its threading
Parameters not published.
view_attachmentHands back an image attachment so it can actually be looked at
Parameters not published.
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