Model Context Protocol (MCP) server for Apollo.io API integration
Nothing to run from here
Mailshake MCP by usefulapi is installed from its publisher's own source and answers where it runs, so this marketplace is not in the path of a single call. There is no address here to send one to, and a panel that pretended otherwise would be showing you an answer we made up. Install it and call it from your own client — the Installation tab has the entry for each one.
96/100
tool-list score
20
tools declared
remote
at its publisher
—
calls last 7d
What it does
Read campaigns, replies and leads; pause or resume campaigns; close or reopen leads in Mailshake.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http mailshake-mcp-by-usefulapi https://mailshake.usefulapi.io/mcp
# 2 — ask your agent for something these tools do
# mailshake_get_account, mailshake_list_team_members, mailshake_list_senders and 17 more
Mailshake MCP by usefulapi costs nothing on mcprush: there is no plan to choose here, no cap to set and nothing mcprush can bill you for.
Publishernot claimed
USAll 664 servers
usefulapi664 servers
25 categories
Collected from a public index. Nobody has claimed this account, so nothing here was written by its author — claim it if it is yours.
Installation
Where are you running it?
Every route below installs the same thing and ends at the same approval screen. Nothing here runs on your machine and nothing runs on ours: this server answers at its publisher’s own address, and what you install is the connection straight to it.
Claude Codedeclared by this listing
This is a public server: it answers at its publisher’s own address and this marketplace is not in the path. Claude Code registers it in one command; --scope user makes it available in every project. The transport below is http, as the publisher's own manifest declares it.
claude mcp add --scope user --transport http mailshake-mcp-by-usefulapi https://mailshake.usefulapi.io/mcpReconnect, or start a new session, and the tools appear in the model’s tool list.
Free on mcprush, and it answers at its publisher’s own address: this marketplace is not in the path, so there is no key of ours to hold and no card to add.
What it writes
One config entry pointing straight at the publisher’s own address — this marketplace is not in the path, and nothing from this listing executes on your machine.
What you approve
20 tools, with what each one reads, writes and reaches shown before you agree — the same list on every route above. Read the tool surface.
Tool surface
What the model actually sees. Descriptions are diffed on every release — see version history.
Show the signed-in Mailshake user and team. Also the cheapest call to check the API key. Mailshake: POST /me.
No parameter schema on file.
List the users on the team, for assigning leads. Mailshake: POST /team/list-members.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| search | string | no | Filter the results by text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the sender accounts (the mailboxes that send campaign emails). Mailshake: POST /senders/list.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| search | string | no | Filter the results by text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the team's campaigns with their IDs and status. Start here to find a campaignID. Costs 10 quota units per call. Mailshake: POST /campaigns/list.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| search | string | no | Filter the results by text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
Get one campaign and its message sequence. Mailshake: POST /campaigns/get.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
List the recipients of one campaign. Filter by state (for example opened, clicked, replied, wasSent, bounced, paused, hasProblems); set negateAction to exclude that state. Costs 10 quota units per call. Mailshake: POST /recipients/list.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
| filter | object | no | Filter by recipient state. |
| search | string | no | Filter the results by text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the team's leads: recipients who may be interested. Filter by campaign, status (for example open) or the teammate the lead is assigned to. Costs 1 quota unit per call. Mailshake: POST /leads/list.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | no | Only leads from this campaign. |
| status | string | no | Lead status, for example open. |
| assignedToEmailAddress | string | no | Only leads assigned to this teammate. |
| search | string | no | Filter the results by text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the most recent emails sent, with the recipient and the message text as plain text. Costs 1 quota unit per call. Mailshake: POST /activity/sent.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| messageType | string | no | one-off = replies a person sent by hand; campaign-message = campaign emails. |
| campaignID | integer | no | Only messages from this campaign. |
| campaignMessageID | integer | no | Only this message in a campaign. |
| campaignMessageType | string | no | Only one message type in a campaign, for example initial. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| excludeBody | boolean | no | true = leave out the message text. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 25. |
List the most recent replies, with the reply text as plain text. Use replyType reply for real answers; bounce, out-of-office, unsubscribe and delay-notification are the other kinds. Costs 10 quota units per call. Mailshake: POST /activity/replies.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| replyType | string | no | Only this kind of reply. Use reply for real answers. |
| campaignID | integer | no | Only replies from this campaign. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 25. |
List the most recent email opens. Costs 2 quota units per call. Mailshake: POST /activity/opens.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | no | Only opens in this campaign. |
| campaignMessageID | integer | no | Only opens of this message. |
| excludeDuplicates | boolean | no | true = count each recipient once. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| since | string | no | Only events after this UTC time, for example 2026-10-01 00:00:00. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the most recent clicks on tracked links. Costs 3 quota units per call. Mailshake: POST /activity/clicks.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | no | Only clicks in this campaign. |
| excludeDuplicates | boolean | no | true = count each recipient once. |
| matchUrl | string | no | Only clicks on this exact tracked link. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| since | string | no | Only events after this UTC time, for example 2026-10-01 00:00:00. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the most recently created leads (from Lead Catcher rules or manual conversions). Costs 5 quota units per call. Mailshake: POST /activity/created-leads.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | no | Only leads from this campaign. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| assignedToEmailAddress | string | no | Only leads assigned to this teammate. |
| since | string | no | Only events after this UTC time, for example 2026-10-01 00:00:00. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
List the most recently updated leads (opened, won, lost or ignored). Costs 5 quota units per call. Mailshake: POST /activity/lead-status-changes.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | no | Only leads from this campaign. |
| recipientEmailAddress | string | no | Recipient email address. A domain such as acme.com matches every address on that domain. |
| assignedToEmailAddress | string | no | Only leads assigned to this teammate. |
| since | string | no | Only events after this UTC time, for example 2026-10-01 00:00:00. |
| nextToken | string | no | nextToken from the previous page. Omit it for the first page. |
| perPage | integer | no | Results per page, up to 100. |
Stop all sending for a campaign now. Emails already in a batch are not stopped. Undo with mailshake_unpause_campaign. Mailshake: POST /campaigns/pause.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
Resume sending for a paused campaign. The sending calendar reschedules its pending emails. Mailshake: POST /campaigns/unpause.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
Stop all sending to one recipient in a campaign. Undo with mailshake_unpause_recipient. Mailshake: POST /recipients/pause.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
| emailAddress | string | yes | The recipient's email address in this campaign. |
Resume sending to one paused recipient in a campaign. Mailshake: POST /recipients/unpause.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaignID | integer | yes | Campaign ID, from mailshake_list_campaigns. |
| emailAddress | string | yes | The recipient's email address in this campaign. |
Mark a lead as won (status closed, the default) or as lost (status lost). Mailshake: POST /leads/close.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| leadID | integer | yes | Lead ID, from mailshake_list_leads. |
| status | string | no | closed = won (default); lost = lost. |
Mark a lead as not worth pursuing (ignored). Undo with mailshake_reopen_lead. Mailshake: POST /leads/ignore.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| leadID | integer | yes | Lead ID, from mailshake_list_leads. |
Make a closed or ignored lead open again for review. Mailshake: POST /leads/reopen.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| leadID | integer | yes | Lead ID, from mailshake_list_leads. |
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
What counts against your monthly calls
| Tool | Unit | Calls used | Out of the allowance |
|---|
Nothing here is billable: mcprush charges nothing to install Mailshake MCP by usefulapi or to call it, at any volume.
Call allowance · this installenforced at the gateway
Monthly allowance, in calls
—
—
Alert at 80% · then the tool returns a normal MCP error
Used this month: —
ATool-list grade · score 96 / 100
Release 1.3.5 · scanned 8 Nov 2026
Graded from the tools this server lists, not from its source code.
Two independent axes, because powerful and malicious are different questions. The grade is threat only. The capability level is blast radius, and it is never a penalty on the grade — it is priced as one subtract-only term in the score, where you can see it.
Threat score100
Client score96
Findings0 threat · 0 capability
Capabilityminimal
Coveragemanifest
Verificationnot in this report
Surface digestba523b758ae24a9eaad8bf23f151a5f0c76e669c679401cb8ca0ba732898887a
Score vectorthreat 100 → client 96
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | minimal | capability blast radius (minimal) — client exposure if the model is manipulated | −0 |
| coverage-honesty | manifest | inspection depth (manifest) — how much of the target the scan could see | −4 |
score = clamp(round(threatScore − E_cap − E_ver − E_cov), 0, 100). No model, no opinion, no network call at scoring time: the same methodology version against the same bytes always produces this number, and every line above is a field of the report rather than a summary of it.
What the scan could actually read
A grade is only as meaningful as its coverage, so the scanner publishes its own depth before it publishes its result.
The scan read each tool’s name, description, input schema and annotations exactly as the server listed them the last time it answered us; no code was reviewed. We ask the server again about once a month, and a list that changed is graded again.
Tool surfaceread
Implementation sourcenot available
Package metadatanot available
Live transportnot available
The implementation source was not read — this reflects the declared tool metadata only.
Capability — what it could do if the model were manipulated
Tags derived from each tool’s schema and the implementation, not from what the tool calls itself. minimal is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| mailshake_get_account | no tags | |
| mailshake_list_team_members | no tags | |
| mailshake_list_senders | no tags | |
| mailshake_list_campaigns | no tags | |
| mailshake_get_campaign | no tags | |
| mailshake_list_recipients | no tags | |
| mailshake_list_leads | no tags | |
| mailshake_list_sent_messages | no tags | |
| mailshake_list_replies | no tags | |
| mailshake_list_opens | no tags | |
| mailshake_list_clicks | no tags | |
| mailshake_list_created_leads | no tags | |
| mailshake_list_lead_status_changes | no tags | |
| mailshake_pause_campaign | no tags | |
| mailshake_unpause_campaign | no tags | |
| mailshake_pause_recipient | no tags | |
| mailshake_unpause_recipient | no tags | |
| mailshake_close_lead | no tags | |
| mailshake_ignore_lead | no tags | |
| mailshake_reopen_lead | no tags |
Toxic-flow graph
The lethal trifecta, checked as a graph rather than as a checklist: untrusted input, a sensitive source and an external sink have to meet before there is a path worth worrying about.
The public result for this release does not print the flow graph, so there is nothing to show here. That is not the same as "no paths were found": what the scan did read is above, under coverage.
Supply chain and provenance
Integrityfirst-seen
Surface digestba523b758ae24a9e
Scanned2026-11-08
This is the first scan of this surface here, so there is nothing yet to compare it against.
Every result on this tab comes from one deterministic pass over the published package — offline, rule by rule, and auditable line by line above. Same methodology version, same bytes, same score.
Release history
This is an address its publisher runs: which release it serves is theirs to choose, so there is nothing here to pin. The history below is for reading; the current release on file is 1.3.5.
1.3.5
undated
latestNo release note was published with this version.
—
no reviews yet
Who can review
One review per account, from a signed-in account that does not publish this listing. Nothing else is asked — you can say what you think before you install it. Publishers can reply once per review, and a review can be edited or deleted by whoever wrote it.
Sign in to write one
Any signed-in account that does not publish Mailshake MCP by usefulapi can review it, once — before installing it or after. A review from an account that has installed it is marked as one.
No reviews yet
Nobody has reviewed this listing. The rating on the card is the mean of the reviews written here and nothing else, so there is no rating until somebody writes the first — which takes a signed-in account that does not publish it, and nothing else.