Proton Bridge MCP

Read, organise and carefully-gated send for Proton Mail, without your mail leaving this machine.

Connector by considus.com · Domain verified by the MCP Registry

IndexedApache-2.0Local (stdio)★ 1

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Works with Claude Desktop. Read the repository before you give any tool access to your data.

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MCP bundle (.mcpb): open it with Claude Desktop.

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Read, organise and carefully-gated send for Proton Mail, without your mail leaving this machine.

Reviews

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Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 26, 2026.

Runs code on install

Its package runs an install script (such as npm postinstall or setup.py code) as soon as you install it, before any tool is called. Read the script first.

Tools: 7 read · 13 write · 4 delete · 1 not yet classified
Secrets: None asked for
Install scripts: Runs code on install
Runs as: Downloaded binary

Tools by what they do 25

Read from the source code; the running server may list different tools.

Read 7 · Look things up without changing anything.

find_thread
get_headers
list_attachments
list_folders
read_attachment
read_message
search_mail

Write 13 · Create, change, send or run things.

apply_label
create_draft
create_folder_or_label
forward
mark
move_to_folder
rename_folder_or_label
reply
save_attachment
send
send_draft
unsubscribe

Show 1 more tools

update_draft

Delete 4 · Delete, drop, revoke or wipe things.

delete_draft
delete_label
purge_attachments
remove_label

Not yet classified 1 · We could not tell from the name and description.

poll_folder

Network hosts it talks to 7

buymeacoffee.com · found in code
catchlight.app · found in code
considus.com · found in code
github.com · found in install command, code
glama.ai · found in code
raw.githubusercontent.com · found in code
serif.com · found in code

Files it touches

Your home directory (~)
~/.config
~/AppData/Roaming
Any path the agent passes to its tools

Tools (25)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

apply_label
Tag one message (uid) or many (uids) with an existing label. Messages stay where they are.
create_draft
Write a draft into the Proton Drafts folder. Never sends. For a reply, pass in_reply_to (the original Message-ID).
create_folder_or_label
Create a new label or folder. GATED: it changes your folder and label structure, so confirm the exact name and type with the user, then call with confirmed=true.
delete_draft
Move a draft to Trash. GATED. Nothing here deletes permanently.
delete_label
Delete a label outright. Every message that carried it stays exactly where it is and simply loses the tag — no mail is deleted. Labels only; folders are where messages live and are not deletable here. Pass label for one or labels for several. GATED.
find_thread
Pull every message of a conversation from All Mail, showing which ones carry documents. ESSENTIAL: Proton's UI groups conversations but IMAP exposes single messages, so an inbox 'Re:' can look attachment-free while the thread's original holds the PDFs. Run this before concluding what a thread needs.
forward
Forward an existing message to someone on demand. GATED like send: confirm recipient with the user, then call with confirmed=true.
get_headers
Headers plus SPF/DKIM/DMARC verdicts and Proton metadata, for judging whether a message is what it claims to be. Pass raw=true for the unparsed header block.
list_attachments
List a message's attachments, separating real DOCUMENTS from inline cid: images and PGP keys (hidden by default). Call before claiming a message has no attachment — read_message shows body text only and never reveals files.
list_folders
List all Proton folders and labels available over the Bridge. Call this first to learn exact folder/label names for filing and tagging. Pass folder to get that folder's message counts plus UIDNEXT and UIDVALIDITY instead: UIDs are only valid within one UIDVALIDITY generation, so check it before acting on uids noted earlier.
mark
Mark one message (uid) or many in one pass (uids) read/unread or star/unstar.
move_to_folder
File one message (uid) or many (uids): move it into another folder (e.g. 'Folders/<name>', 'Archive', 'Trash'). Many at once is GATED: preview with dry_run=true, show the user, then call with confirmed=true.
poll_folder
Messages that have arrived since the last poll. The very first poll emits nothing and just records where the mailbox ends, so turning this on does not replay the backlog. Marks nothing as read. Pass commit to commit a checkpoint an advance=false poll returned; repeating that is harmless.
purge_attachments
Immediately delete all ephemeral saved attachments. Call after reading a saved file so nothing lingers on disk.
read_attachment
Read an attachment inline. Text comes back as text: PDFs via pypdf, plus text/csv/json/ics/eml, for invoices, decks, reports. An image comes back as a viewable image, the only way to see a photo or a scan when the client cannot read local files. Other binary types must use save_attachment instead.

Show 10 more tools

read_message
Read the full headers and body text of one message by uid within a folder.
remove_label
Take a label off one message (uid) or many (uids). The messages stay where they are. GATED: removing a label ends in an expunge against the label mailbox, so confirm it or preview with dry_run=true first.
rename_folder_or_label
Rename a folder or label where it stands: a label stays a label and a folder keeps its parent. INBOX and the special mailboxes (Sent, Drafts, Trash, Spam, Archive, All Mail) are refused. GATED: confirm the old and new names with the user, then call with confirmed=true.
reply
Reply to one message with correct threading. Replies to the Reply-To address when there is one, so alias mail stays masked. Pass all=true to reply to everyone, with your own addresses removed from Cc and duplicates dropped. Pass draft=true to save it for review, or confirmed=true to send.
save_attachment
Write attachment(s) to disk and return the path(s). Use for images, scanned PDFs, or anything not text-extractable. EPHEMERAL by default — files self-delete after the TTL.
search_mail
Search a folder. Combine any of: text, from, subject, since (DD-Mon-YYYY), unread_only, flagged_only. Returns uids + envelopes, newest first. With no filters it lists the newest messages in the folder. Set include_locations to also report which labels and folders each message carries. Set all_folders to search every mailbox at once when you do not know where something is: duplicates collapse by Message-ID and each row says where the message lives.
send
Send a new email. GATED: the agent must show the user the exact To/Subject/Body, get an explicit yes, then call with confirmed=true. Never call unattended.
send_draft
Send a saved draft as written, then move it to Trash. GATED. Sender and recipient checks run again at send time.
unsubscribe
Report how to unsubscribe from a message using its List-Unsubscribe header, and optionally send the email form. Reports only unless send=true. Web links are never fetched for you.
update_draft
Replace a draft's contents. Threading headers are carried over, the new version is saved before the old one is binned. Omit a field to keep what the draft already had.

Signals

Stars: 1
Forks: 1
Open issues: 0
Last commit: Oct 23, 2026 (7 days ago)
Last release: Oct 23, 2026 (8 days ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name: com.considus/proton-bridge-mcp
Version: 2.0.0
Auth: No auth
Packages: mcpb https://github.com/Considus/proton-bridge-mcp/releases/download/v2.0.0/proton-bridge-mcp-2.0.0.mcpb
License: Apache-2.0
Repository: github.com/Considus/proton-bridge-mcp
Website: considus.com/proton-bridge-mcp/
First seen: Oct 24, 2026
Last checked: Oct 25, 2026
Source: Official MCP Registry github-graphql

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Cite this page

Proton Bridge MCP. Agent Mart. https://agentmart.dev/connectors/considus-com-proton-bridge-mcp (last updated 2026-10-25)

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About

Reviews

Permissions

Tools by what they do 25

Read 7 · Look things up without changing anything.

Write 13 · Create, change, send or run things.

Delete 4 · Delete, drop, revoke or wipe things.

Not yet classified 1 · We could not tell from the name and description.

Network hosts it talks to 7

Files it touches

Tools (25)

Signals

Details

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