Name: Multi Mail
Author: lumman

Multi Mail MCP

Gmail, Outlook, Hotmail, iCloud and Fastmail mailboxes - several at once, one search across all.

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What it does

Gmail, Outlook, Hotmail, iCloud and Fastmail mailboxes - several at once, one search across all.

Quickstart

# 1 — add it to Claude Code
claude mcp add --scope user --transport http multi-mail-mcp https://lumman.co/mcp/mail

# 2 — ask your agent for something these tools do
#   mailboxes_list, messages_list, messages_list_all_mailboxes and 27 more

Multi Mail costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.

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Tool surface

What the model actually sees. Descriptions are diffed on every release — see version history.

Only tools that write or reach the network

List the connected mailboxes that answer, each by the name a tool's mailbox input takes, and the tools its provider does not offer. The mail of every mailbox mailboxes_list names is read and written with Multi Mail's tools.

No parameter schema on file.

Search one connected mailbox in its own provider's query language, Gmail's or Outlook's. The mail of every mailbox mailboxes_list names is read and written with Multi Mail's tools.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
q	string	yes	A Gmail mailbox reads Gmail's search operators: from:, to:, cc:, subject:, is:unread, is:starred, in:sent, has:attachment, filename:pdf, after:2026/01/31, before:, newer_than:7d, larger:5M, OR, -word
by	string	no	message, the default, answers each matching message; thread answers each matching thread with every message in it.
view	string	no	summary, the default, carries each message's subject and snippet; headers leaves both out.
maxResults	integer	no	—
pageToken	string	no	The nextPageToken of the page before, asked with the same q and by. Outlook pages threads by their matching messages, so a thread can recur on a later page.

Search every mailbox you have connected in one call. The answer names the mailbox each result came from, names any mailbox it could not search, and is merged newest first by when each message arrived, a thread by its newest. The mail of every mailbox mailboxes_list names is read and written with Multi Mail's tools.

Parameter	Type	Required	Notes
q	string	yes	A Gmail mailbox reads Gmail's search operators: from:, to:, cc:, subject:, is:unread, is:starred, in:sent, has:attachment, filename:pdf, after:2026/01/31, before:, newer_than:7d, larger:5M, OR, -word
by	string	no	message, the default, answers each matching message; thread answers each matching thread with every message in it.
view	string	no	summary, the default, carries each message's subject and snippet; headers leaves both out.
maxResults	integer	no	How many results to take from each mailbox.

Read every message of one thread in a connected mailbox, oldest first.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The threadId a search or a read answered.
view	string	no	full, the default, carries each message's text and attachments; summary leaves those out; headers leaves out the subject and snippet too.

Read one message in a connected mailbox, with its headers and its body.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The message's id, as a search or a thread read answered it, or a draft's own id.
view	string	no	full, the default, carries each message's text and attachments; summary leaves those out; headers leaves out the subject and snippet too.

Compose a message in a connected mailbox and keep it there as a draft.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
to	array	yes	Who the message is addressed to.
cc	array	no	Who to copy.
bcc	array	no	Who to blind-copy. The other recipients are not told.
subject	string	yes	The subject line.
body	string	yes	The message text.
html	string	no	The message as HTML, for formatting; body stays its plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.
attachments	array	no	Files to carry: one held by a connected mailbox of the draft's own provider, or content you write out.

Change a draft in a connected mailbox. A field the call leaves out stays as the draft has it. A mailbox whose provider is imap keeps the edited draft under a new id the answer names, and the old id then reads nothing; an old version its server did not remove stays in Drafts, named as previousVersionId.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The id a draft tool answered, or the draftId a search or a read answered.
to	array	no	Who the message is addressed to.
cc	array	no	Who to copy.
bcc	array	no	Who to blind-copy. The other recipients are not told.
subject	string	no	The subject line.
body	string	no	The whole message text, a reply's quote included. Given without html, the draft becomes plain text.
html	string	no	The whole message as HTML, for formatting; given without body, its plain-text version is read from it. An Outlook mailbox keeps only the HTML and writes the plain version from it.
attachments	array	no	Files to carry, each held by a connected mailbox of the draft's own provider or written out. Named, they replace the ones it holds, and an empty list removes them all. An Outlook draft takes on the ne

Compose a reply to a message as a draft, inside the thread it answers and quoting it below the reply: to whoever wrote it, or with replyAll to everyone on it. Nothing leaves the mailbox until the draft is sent.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
messageId	string	yes	The provider's own identifier.
body	string	yes	The reply text.
html	string	no	The message as HTML, for formatting; body stays its plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.
to	array	no	Who the reply goes to, instead of whoever wrote the message and, with replyAll, those it was sent to.
cc	array	no	Who to copy, instead of those replyAll copies.
replyAll	boolean	no	Also address everyone the message was sent to and copied - never its blind copies, never this mailbox.
bcc	array	no	Who to blind-copy. The other recipients are not told.
attachments	array	no	Files to carry: one held by a connected mailbox of the draft's own provider, or content you write out.

Compose a forward of a message as a draft, with the files it carries and inside the thread it already sits in. Nothing leaves the mailbox until the draft is sent.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
messageId	string	yes	The provider's own identifier.
to	array	yes	Who the forward is addressed to.
cc	array	no	Who to copy.
bcc	array	no	Who to blind-copy. The other recipients are not told.
note	string	no	Your own words, above the message forwarded.
html	string	no	Your own words as HTML, for formatting; note stays their plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.

Throw away a draft. Nothing already sent is touched. Gmail mailboxes only: an Outlook draft keeps its identifier once sent, so discarding one could delete sent mail.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The id a draft tool answered, or the draftId a search or a read answered.

Compose a new message in a connected mailbox and send it in one call. Call this only when the person asked for this message to go; when they asked to prepare one, draft it instead. A request id already spent sends nothing again: the answer says whether that send went or may have gone.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
to	array	yes	Who the message is addressed to.
cc	array	no	Who to copy.
bcc	array	no	Who to blind-copy. The other recipients are not told.
subject	string	yes	The subject line.
body	string	yes	The message text.
html	string	no	The message as HTML, for formatting; body stays its plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.
attachments	array	no	Files to carry: one held by a connected mailbox of the message's own provider, or content you write out.
requestId	string	yes	Your own id for this send, new for every message. One whose send went or may have gone sends nothing again.

Send a draft. It leaves the mailbox and consumes the draft. Only a draft is sent: a message already sent or received is refused, and nothing leaves. Call this only when the person asked for this message to go; when they asked to prepare one, draft it instead. A request id already spent sends nothing again: the answer says whether that send went or may have gone.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The id a draft tool answered, or the draftId a search or a read answered.
requestId	string	yes	Your own id for this send, new for every message. One whose send went or may have gone sends nothing again.

Reply to a message, inside its own thread and quoting it below the reply: to whoever wrote it, or with replyAll to everyone on it. Call this only when the person asked for this message to go; when they asked to prepare one, draft it instead. A request id already spent sends nothing again: the answer says whether that send went or may have gone.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
messageId	string	yes	The provider's own identifier.
body	string	yes	The reply text.
html	string	no	The message as HTML, for formatting; body stays its plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.
to	array	no	Who the reply goes to, instead of whoever wrote the message and, with replyAll, those it was sent to.
cc	array	no	Who to copy, instead of those replyAll copies.
replyAll	boolean	no	Also address everyone the message was sent to and copied - never its blind copies, never this mailbox.
requestId	string	yes	Your own id for this send, new for every message. One whose send went or may have gone sends nothing again.

Forward one message to the addresses you name, with the files it carries, inside the thread it already sits in. Only the provider's own limit applies to what it carries. Call this only when the person asked for this message to go; when they asked to prepare one, draft it instead. A request id already spent sends nothing again: the answer says whether that send went or may have gone.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
messageId	string	yes	The provider's own identifier.
to	array	yes	Who the forward is addressed to.
note	string	no	Your own words, above the message forwarded.
html	string	no	Your own words as HTML, for formatting; note stays their plain-text version. An Outlook mailbox keeps only the HTML and writes the plain version from it.
requestId	string	yes	Your own id for this send, new for every message. One whose send went or may have gone sends nothing again.

List the labels a connected mailbox holds, by the id each is applied by. A mailbox whose provider is imap holds its folders as labels, nested by /, beside UNREAD, STARRED and SPAM.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.

Create a label in a connected mailbox and answer the id it is applied by. In a Gmail mailbox, and as a folder in one whose provider is imap, a / nests it under the label before it, made first where missing; in an Outlook mailbox a / is just a character.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
name	string	yes	What the label is called.

Rename a label, recolour it, or both. The id comes from labels_list. An Outlook mailbox's categories are its labels, and Microsoft lets one take only a new colour. A mailbox whose provider is imap renames its folder, which takes no colour, and answers the label's new id.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	A label id from labels_list.
name	string	no	Its new name.
color	string	no	Its new colour.

Delete one label, by its id from labels_list. No message is deleted: in a Gmail mailbox the label comes off every message; an Outlook mailbox's category leaves its list, and the messages that carried it keep its name. A mailbox whose provider is imap deletes only a folder holding no mail and no folder.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	A label id from labels_list.

Apply and remove labels on one thread, or one message of it - an Outlook mailbox's categories are its labels. The ids come from labels_list. Adding SPAM junks it, and taking SPAM off brings it back to the inbox. In a Gmail mailbox adding TRASH bins it too; an Outlook mailbox takes UNREAD and STARRED beside its categories and SPAM, and no other id; a mailbox whose provider is imap takes only UNREAD

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The threadId a search or a read answered, or with scope message the message's id.
scope	string	no	thread, the default, acts on the whole thread; message acts on that one message alone.
addLabelIds	array	no	—
removeLabelIds	array	no	—

Take one thread out of the inbox. It stays in the mailbox and in search. A mailbox whose provider is imap moves its inbox messages into its archive folder, made as Archive where it has none, each under a new id the answer names.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The threadId a search or a read answered.

Move one thread, or one message of it, to the trash - Gmail's bin, an Outlook mailbox's Deleted Items, the trash folder of a mailbox whose provider is imap - where it stays until threads_untrash brings it back or the provider's own retention ends it. In a mailbox whose provider is imap each moved message takes a new id, which the answer names.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The threadId a search or a read answered, or with scope message the message's id.
scope	string	no	thread, the default, acts on the whole thread; message acts on that one message alone.

Bring one thread, or one message of it, back out of the trash. A mailbox whose provider is imap puts a draft back in its drafts, the owner's own mail in sent mail and the rest in the inbox, each under a new id the answer names.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	The threadId a search or a read answered, or with scope message the message's id.
scope	string	no	thread, the default, acts on the whole thread; message acts on that one message alone.

Read one attachment of a message. The answer is what it says, as plain text; with as original it is the file itself, base64. messages_get and threads_get name a message's attachments and their sizes. Either answer names the address the original is served at whole, to a GET carrying this same credential.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
messageId	string	yes	The message's id, as a search or a read answered it.
id	string	yes	An attachment id, as a message read named it.
as	string	no	text, the default: what the file says. original: the file itself, byte for byte.
continuation	string	no	Where the words resume, as the last part read named it. The original always comes whole.

List the rules a connected mailbox files incoming mail by.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.

Create a rule that files incoming mail in a connected mailbox. A rule that carries mail out of the mailbox, or that bins or junks what it matches, is refused, whether or not the provider would take it. An Outlook mailbox's rule files only under labels or out of the inbox (removeLabelIds INBOX).

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
from	string	no	Match mail from this sender.
query	string	no	Anything else to match: a Gmail search query, or for an Outlook mailbox one plain word or quoted phrase in the subject or body, with no AND, OR or NOT in capitals.
addLabelIds	array	no	Labels to apply, by id. TRASH and SPAM are refused.
removeLabelIds	array	no	Labels to remove, by id.
forward	string	no	Refused: this surface makes no rule that carries mail elsewhere.

Delete one rule by its id. Mail it already filed stays where it is.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
id	string	yes	A rule id from settings_filters_list.

Replace the signature on the mailbox's own send-as identity. Nothing of the old one is kept, so read it first with settings_send_as_get. An empty signature clears it. Gmail mailboxes only: an Outlook mailbox exposes no signature to write.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
signature	string	yes	The signature, as HTML the provider will sanitise.

Read the signature on the mailbox's own send-as identity, as HTML. A mailbox with no signature answers without one. Gmail mailboxes only: an Outlook mailbox exposes no signature to read.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.

Read whether a connected mailbox answers mail automatically, what it says, and any schedule or restriction it carries.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.

Turn the vacation responder on or off. A Gmail mailbox replaces the whole responder, so a schedule or a restriction it already held is not kept; an Outlook mailbox keeps what this call does not name, and holds no subject.

Parameter	Type	Required	Notes
mailbox	string	yes	The mailbox's name or its email address.
enableAutoReply	boolean	yes	Whether the mailbox answers automatically.
responseSubject	string	no	The subject the answer carries.
responseBodyPlainText	string	no	What the answer says.

Free

$0 forever

Every tool — any call limit is its publisher’s, not ours
No card, and mcprush charges nothing for it
Runs at its publisher’s own address — this marketplace is not in the path
Nothing to cap, because mcprush bills nothing

Nothing here is billable: mcprush charges nothing to install Multi Mail or to call it, at any volume.

Where are you running it?

Tool surface

Release history

Multi Mail MCP

What it does

Quickstart

Where are you running it?

Tool surface

What counts against your monthly calls

Release history

See also