Mailrith Email Marketing
Manage email subscribers, broadcasts, sequences, and automations in Mailrith
Connect to Mailrith email marketing platform to manage subscribers, create and schedule broadcasts, build email sequences, apply tags and segments, and view campaign analytics and delivery progress.
Try asking Muse: "Add a new subscriber to my email list and enroll them in a welcome sequence"
Source: Found in the official MCP Registry (com.mailrith/mailrith) · First listed September 24, 2026
Last 24 hours
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Not in Muse's Connectors list yet, but Muse can still use it. Copy the request below and paste it into Muse. Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
https://api.mailrith.com/mcpNot in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
Technical details: safety screening, tools, response time and recent checks
Response time at the last check: 472ms. Worked in 100% of checks over 30 days.
Screening · September 24, 2026
Screened, no issues found
Screening looks for known threats and hidden instructions at the time of the check, and runs again weekly and whenever the tool list changes. It cannot see the server's code, so only connect what you need and review what Muse asks to do. How screening works.
Tools · 40
discovery_get_capabilitiesReturns the current workspace context, discovery URLs, shared request conventions, supported webhook events, and public resource operations available to the authenticated bearer credential. Permission: none. API reference: https://mailrith.com/developers/api-reference.workspace_getReturns the authenticated workspace profile and mailing context used by broadcasts, sequences, automations, forms, and magic links. Permission: workspace:read. API reference: https://mailrith.com/developers/api-reference.sender_identities_listReturns a bounded page of enabled sender names, addresses, and provider types that can be selected for Broadcasts and Sequences. Provider credentials and configuration are never returned. Permission: workspace:read. Pagination: use bounded pages and returned cursors. API referencsender_identities_getReturns one enabled sender name, address, and provider type by stable identifier. Provider credentials and configuration are never returned. Permission: workspace:read. API reference: https://mailrith.com/developers/api-reference.analytics_create_reportRuns from compact rollups. Ranges through 31 days complete inline; longer ranges are queued. Results expire after 24 hours and never exceed 100 rows. Effect: workspace-change. Retry with the same idempotency_key. Permission: analytics:read. API reference: https://mailrith.com/devanalytics_get_reportReturns one unexpired bounded analytics report by identifier. Permission: analytics:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.subscribers_listReturns subscribers in the authenticated workspace, sorted from newest to oldest. Permission: subscribers:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.subscribers_getReturns one Subscriber by its stable identifier from the authenticated workspace. Permission: subscribers:read. API reference: https://mailrith.com/developers/api-reference.subscribers_upsertCreates a new subscriber when the email does not exist in the workspace. If the email already exists, the API updates the existing subscriber unless create_only is true. Effect: external-email. Retry with the same idempotency_key. Permissions: live_actions:write, subscribers:writsubscribers_updateUpdates profile fields, status, custom fields, tags, or sequence assignments for one subscriber. Fields omitted from the request stay unchanged. Blank optional custom field values also leave saved values unchanged, and filled-in invalid values are rejected. Effect: subscriber-chasubscribers_update_statusChanges the delivery status for one Subscriber without changing profile, targeting, or Sequence enrollment fields. Making a Subscriber Active requires consent_evidence; its collected_at value must include the correct UTC offset and must not be later than Mailrith's server time. Esubscribers_add_tagAdds the selected Tag to a Subscriber. If the Subscriber already has the Tag, the API returns the Subscriber unchanged. Effect: external-email. Retry after reading the current resource state. Permissions: live_actions:write, subscribers:write. API reference: https://mailrith.com/subscribers_remove_tagRemoves the selected tag from a subscriber. If the subscriber does not have the tag, the API returns the subscriber unchanged. Effect: external-email. Retry after reading the current resource state. Permissions: live_actions:write, subscribers:write. API reference: https://mailrisubscribers_add_to_sequenceAdds the selected subscriber to the selected sequence. If the subscriber is already in the sequence, the API returns the subscriber unchanged. Effect: external-email. Retry after reading the current resource state. Permissions: live_actions:write, subscribers:write. API referencesubscribers_remove_from_sequenceRemoves the selected subscriber from the selected sequence. If the subscriber is not in the sequence, the API returns the subscriber unchanged. Effect: subscriber-change. Retry after reading the current resource state. Permissions: live_actions:write, subscribers:write. API refertags_listReturns tags in the authenticated workspace. Permission: tags:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.tags_getReturns one Tag from the authenticated workspace. Permission: tags:read. API reference: https://mailrith.com/developers/api-reference.tags_createCreates a new tag in the authenticated workspace. The GDPR consent tag names can be created and applied like other tags when you need to apply consent collected outside Mailrith. Tag-level double opt-in fields are no longer accepted; configure double opt-in on forms and landing pcustom_fields_listReturns a bounded page of custom fields in the authenticated workspace, including each field's exact ready-to-use email personalization token. Permission: custom_fields:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-recustom_fields_getReturns one custom field from the authenticated workspace, including its exact ready-to-use email personalization token. Permission: custom_fields:read. API reference: https://mailrith.com/developers/api-reference.segments_listReturns saved segments from the authenticated workspace. Permission: segments:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.segments_getReturns one saved segment from the authenticated workspace. Permission: segments:read. API reference: https://mailrith.com/developers/api-reference.segments_previewReturns subscriber counts for an unsaved segment definition. Include `current_segment_id` when previewing edits to an existing segment so circular segment references are rejected before saving. Permission: segments:read. API reference: https://mailrith.com/developers/api-referencbroadcasts_listReturns broadcast drafts, scheduled sends, active sends, and completed sends. Permission: broadcasts:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.broadcasts_createCreates a broadcast draft in the authenticated workspace. Effect: workspace-change. Retry with the same idempotency_key. Permission: broadcasts:write. API reference: https://mailrith.com/developers/api-reference.broadcasts_getReturns a broadcast draft, scheduled send, active send, or completed send. Permission: broadcasts:read. API reference: https://mailrith.com/developers/api-reference.broadcasts_updateUpdates an existing Broadcast draft. Scheduled, running, completed, and failed Broadcasts cannot be changed here. Before changing a scheduled Broadcast, read it by ID and retain its scheduled_at in the current task only. If the saved time is no longer safely in the future, ask thbroadcasts_preflightOptionally checks the current Subscriber estimate, provider capacity, sender setup, event tracking, and blocking issues. This diagnostic is not required before starting a durable send. Permission: broadcasts:read. API reference: https://mailrith.com/developers/api-reference.broadcasts_send_testSends a test message from an existing Broadcast that has an email delivery connection. Provide a saved Subscriber ID for personalization; use subscribers_list to find one when needed. The recipient may be any test inbox and does not have to match the saved Subscriber. Effect: extbroadcasts_scheduleSchedules a draft for future delivery, or changes the delivery time of an existing scheduled Broadcast. This uses Mailrith's durable scheduled-send path and does not start delivery immediately. Effect: external-email. Retry after reading the current resource state. Permissions: lbroadcasts_unscheduleReturns a scheduled Broadcast to draft state before delivery starts. Effect: workspace-change. Retry after reading the current resource state. Permissions: live_actions:write, broadcasts:write. API reference: https://mailrith.com/developers/api-reference.broadcasts_sendImmediately creates durable preparation for a broadcast draft or scheduled send. Mailrith calculates the exact Subscriber total and checks provider readiness in the background before delivery. A 202 response means the durable send was accepted, not that provider delivery is complbroadcasts_cancelRequests cancellation for delivery work that has not reached the provider. Provider-accepted emails cannot be recalled. Repeat the same request with the same idempotency key when the response is lost. Effect: external-email. Retry with the same idempotency_key. Permissions: live_broadcasts_get_send_progressReturns bounded delivery progress, current rates, timing, outcome counts, and pause state. Poll until terminal is true; use 5 to 10 second intervals while progress changes and back off to 30 seconds when unchanged. Permission: broadcasts:read. Polling: wait at least 2 seconds, ussequences_listReturns sequences in the authenticated workspace. Permission: sequences:read. Pagination: use bounded pages and returned cursors. API reference: https://mailrith.com/developers/api-reference.sequences_createCreates a sequence in the authenticated workspace. Effect: workspace-change. Retry with the same idempotency_key. Permission: sequences:write. API reference: https://mailrith.com/developers/api-reference.sequences_getReturns one sequence from the authenticated workspace. Permission: sequences:read. API reference: https://mailrith.com/developers/api-reference.sequences_updateUpdates an existing paused Sequence. Before changing a running Sequence, read it by ID, retain its status in the current task only, pause it, apply the update, and use bounded direct item reads until is_updating is false. Run preflight, return it to running only if it was runningsequences_preflightChecks the saved Sequence, its published emails, and its email delivery connection without changing data or sending email. Permission: sequences:read. API reference: https://mailrith.com/developers/api-reference.sequences_preview_journeyReturns the bounded saved email timeline and shows which messages a selected Subscriber is eligible to receive, without enrolling the Subscriber or sending email. Permissions: subscribers:read, sequences:read. API reference: https://mailrith.com/developers/api-reference.Recent checks
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https://api.mailrith.com/mcpQuestions about Mailrith Email Marketing in Muse
How do I connect Mailrith Email Marketing to Muse?
Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use Mailrith Email Marketing to help me. It is a free service with an MCP server at https://api.mailrith.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.
Is Mailrith Email Marketing working right now?
At the last check (September 28, 2026, 08:45 UTC) the endpoint was working, answering in 472ms. Over the last 7 days it answered 100% of health checks. It is checked every 15 minutes.
Is Mailrith Email Marketing safe to connect to Muse?
It was screened on September 24, 2026 with the result "screened, no issues found". Screening checks the domain against threat feeds and reads the tools for hidden instructions and requests for passwords or card numbers. It cannot see the server's code, so grant only the access you need.
What can Mailrith Email Marketing do in Muse?
It exposes 40 tools, including discovery_get_capabilities, workspace_get, sender_identities_list, sender_identities_get. For example, you could ask Muse: "Add a new subscriber to my email list and enroll them in a welcome sequence"
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