Community Gmail server with auto-auth: search, read and send email via MCP.
Nothing to run from here
Enginemailer 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.
93/100
tool-list score
17
tools declared
remote
at its publisher
—
calls last 7d
What it does
Read Enginemailer subscribers, lists and campaigns; add subscribers, create and send campaigns.
Quickstart
# 1 — add it to Claude Code
claude mcp add --scope user --transport http enginemailer-mcp-by-usefulapi https://enginemailer.usefulapi.io/mcp
# 2 — ask your agent for something these tools do
# enginemailer_get_subscriber, enginemailer_list_subscriber_categories, enginemailer_list_custom_fields and 14 more
Enginemailer 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 684 servers
usefulapi684 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 enginemailer-mcp-by-usefulapi https://enginemailer.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
17 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.
One subscriber by email: id, status and all custom field values. GET /restapi/subscriber/emsubscriber/getSubscriber.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| string | yes | An email address (max 128 characters). |
The subscriber category tree: each category with its subcategories (ids, names). Use the subcategory ids when adding or updating subscribers and when assigning campaign recipients. GET /restapi/subscriber/emsubscriber/getSubCategory.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| include_active_subscriber_count | boolean | no | Also return active subscriber counts (only for accounts the vendor has enabled this for). |
The subscriber custom field definitions (key, name, type). Use the keys when adding or updating subscribers. GET /restapi/subscriber/emsubscriber/getCustomField.
No parameter schema on file.
WRITE: add a subscriber to the account (optionally into subcategories, with custom field values). Only add people who consented to marketing email. Free accounts may insert 50 subscribers a day, paid accounts 10,000. POST /restapi/subscriber/emsubscriber/insertSubscriber.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| string | yes | An email address (max 128 characters). | |
| subcategory_ids | array | no | Subcategory (list/segment) ids from enginemailer_list_subscriber_categories. |
| custom_fields | array | no | Custom field values to set. |
| source_type | string | no | Where the subscriber came from, e.g. 'Signup from website' (max 256). |
WRITE: change an existing subscriber's subcategories and/or custom fields. subcategories_mode: append (default), remove (drop the given subcategories) or replace (the given list becomes the full list). custom_fields_mode: update_given (change only the given fields) or replace_all (default; fields not given are cleared). POST /restapi/subscriber/emsubscriber/updateSubscriber.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| string | yes | An email address (max 128 characters). | |
| subcategory_ids | array | no | Subcategory (list/segment) ids from enginemailer_list_subscriber_categories. |
| subcategories_mode | string | no | How subcategory_ids apply (default append). |
| custom_fields | array | no | Custom field values to set. |
| custom_fields_mode | string | no | update_given changes only the listed fields; replace_all (the vendor default) clears the others. |
WRITE: unsubscribe a subscriber so they no longer receive campaigns. Reversing it needs the subscriber to opt in again in Enginemailer. GET /restapi/subscriber/emsubscriber/unSubSubscriber.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| string | yes | An email address (max 128 characters). |
WRITE: create a subscriber category (category_id 0) or update one (its id), with subcategories (subcategory_id 0 creates one). Names and descriptions max 128 characters. POST /restapi/subscriber/emsubscriber/updateCategory.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| category_id | integer | yes | 0 to create a new category, else the existing category id. |
| name | string | yes | — |
| description | string | no | — |
| is_visible | boolean | no | Visible to subscribers (default true). |
| subcategories | array | no | — |
List campaigns that have NOT been delivered yet (drafts and scheduled ones): id, name, subject, sender and schedule. Delivered campaigns are not listed by the API; use enginemailer_get_campaign_stats with a known id. Needs a paid account. GET /restapi/campaign/emcampaign/ListCampaign.
No parameter schema on file.
Delivery results of a DELIVERED campaign: emails sent, delivered, bounces, opens, unique opens, clicks, unique clicks, unsubscribes, spam complaints. Needs a paid account. GET /restapi/campaign/emcampaign/getcampaigndeliverystatus.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaign_id | integer | yes | Campaign id. |
The categories that campaign recipients can be filtered by (id, name, description). Needs a paid account. GET /restapi/campaign/emcampaign/GetCategoryList.
No parameter schema on file.
The subcategories of one campaign category (id, name, description); use these ids in enginemailer_assign_campaign_recipients. Needs a paid account. GET /restapi/campaign/emcampaign/GetSubCategoryList.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| category_id | integer | yes | Category id from enginemailer_list_campaign_categories. |
WRITE: create a campaign DRAFT. Nothing is sent: assign recipients with enginemailer_assign_campaign_recipients, then send with enginemailer_send_campaign. The sender domain must be verified in Enginemailer; max 200 campaigns per account. Needs a paid account. POST /restapi/Campaign/EMCampaign/CreateCampaign.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| name | string | yes | Internal campaign name. |
| sender_name | string | yes | — |
| sender_email | string | yes | Sender address on a verified domain. |
| reply_to | string | no | An email address (max 128 characters). |
| subject | string | yes | — |
| content_html | string | yes | The email body, HTML (max 256 KB). |
WRITE: set who a campaign will go to: all subscribers, or the subscribers in the given subcategory ids (match_type any = OR, all = AND). Does not send anything. Needs a paid account. POST /restapi/campaign/emcampaign/AssignRecipientList.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaign_id | integer | yes | Campaign id. |
| audience | string | yes | — |
| subcategory_ids | array | no | Required when audience is subcategories. |
| match_type | string | no | any = subscribers in at least one subcategory (OR, default); all = in every one (AND). |
WRITE, SENDS EMAIL TO CUSTOMERS NOW and cannot be undone: delivers the campaign to its assigned recipients immediately. The campaign needs at least one recipient and must not be scheduled or already delivered. Show the user the campaign and its audience and get their go-ahead first; set confirm to true only then. Needs a paid account. GET /restapi/campaign/emcampaign/SendCampaign.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| campaign_id | integer | yes | Campaign id. |
| confirm | boolean | yes | Must be true: the user has approved sending this campaign to its recipients now. |
WRITE, SENDS ONE EMAIL NOW and cannot be undone: submits a transactional email to one recipient (plus optional CC/BCC). Needs a sender address on a verified domain; give either subject + content_html, or a template_id from the Enginemailer portal (the template supplies subject and sender name). Total message incl. attachments max 5 MB. Confirm the recipient and text with the user first; set confir
| Parameter | Type | Required | Notes |
|---|---|---|---|
| to_email | string | yes | An email address (max 128 characters). |
| sender_email | string | yes | Sender address on a verified domain (must match the template's sender when template_id is used). |
| sender_name | string | no | — |
| subject | string | no | — |
| content_html | string | no | Email body (HTML). Not needed with template_id. |
| template_id | string | no | Stored template id from the Enginemailer portal. |
| campaign_name | string | no | Label for reports. |
| substitution_tags | array | no | Merge tags. Values must not contain { } [ ]. |
| cc | array | no | — |
| bcc | array | no | — |
| confirm | boolean | yes | Must be true: the user has approved sending this email now. |
Start a CSV export of the transactional email delivery report for a period (start date at most 60 days back). Returns an export id; poll it with enginemailer_check_transactional_report_export. Creates a report file only; nothing is sent. POST /RESTAPI/V2/Submission/Report/Export.
| Parameter | Type | Required | Notes |
|---|---|---|---|
| period | string | yes | Date range exactly like '1 Sep 2026 - 16 Sep 2026'. |
| email_to_filter | string | no | Only emails sent to this recipient. |
| domain_filter | string | no | Domain filter, sent as the vendor's DomainFilter (the sender domain in the vendor's report), e.g. example.com. |
Status of a report export (Processing or Complete); when complete it includes the CSV download URL. POST /RESTAPI/V2/Submission/Report/CheckExport (read-only).
| Parameter | Type | Required | Notes |
|---|---|---|---|
| export_id | integer | yes | ExportID from enginemailer_start_transactional_report_export. |
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 Enginemailer 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 93 / 100
Release 1.15.5 · 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 score93
Findings0 threat · 1 capability
Capabilitymoderate
Coveragemanifest
Verificationnot in this report
Surface digest7a5236a7aaa667acd6cf38a42a673c614de8056a6830ad21a8ce4f11a557b4a7
Score vectorthreat 100 → client 93
| Term | Level | What it prices | Points |
|---|---|---|---|
| capability-exposure | moderate | capability blast radius (moderate) — client exposure if the model is manipulated | −3 |
| 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. moderate is the level these add up to.
| Tool | Capability tags | Why the tag was assigned |
|---|---|---|
| enginemailer_get_subscriber | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_list_subscriber_categories | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_list_custom_fields | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_add_subscriber | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| enginemailer_update_subscriber | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_unsubscribe_subscriber | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_save_subscriber_category | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_list_campaigns | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_get_campaign_stats | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_list_campaign_categories | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_list_campaign_subcategories | untrusted-input | untrusted-input: declares openWorldHint: true (interacts with entities outside the server) |
| enginemailer_create_campaign | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| enginemailer_assign_campaign_recipients | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_send_campaign | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_send_transactional_email | external-sink | external-sink: declares readOnlyHint: false, destructiveHint: true, openWorldHint: true |
| enginemailer_start_transactional_report_export | external-sink | external-sink: declares readOnlyHint: false, openWorldHint: true |
| enginemailer_check_transactional_report_export | untrusted-input | untrusted-input: keyword "download", declares openWorldHint: true (interacts with entities outside the server) |
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.
flow-1
Untrusted input can drive an external action even though no sensitive source is exposed.
Supply chain and provenance
Integrityfirst-seen
Surface digest7a5236a7aaa667ac
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 1.15.5.
1.15.5
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 Enginemailer 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.