Marketing60 toolsPaste one API key
Lettr integration for AI agents
Lettr is an email and messaging platform for transactional delivery, templates, audiences, campaigns, domains, and webhooks.
Use it from your agent
One ClawLink account serves every agent you run. Pick the guide for yours, or connect Lettr once and call the same tools from all of them.
Lettr for OpenClawInstall, pair, connect, first prompt
Lettr for Hermes AgentInstall, pair, connect, first promptMCPClaude Code, Cursor, any MCP clientCLI login or the remote MCP serverSetup
Connect Lettr through ClawLink's hosted setup.
- Auth: Paste one API key. The credential stays on the ClawLink server; your agent holds only a ClawLink key you can revoke.
- Where: the ClawLink dashboard, or ask your agent to connect it.
What your agent can do
Lettr exposes 60 tools through ClawLink. The 30 most used are listed here; your agent sees all of them.
| Tool | What it does | Kind |
|---|---|---|
lettr_get_audience_contact | Retrieve one contact's email, status, custom properties, list memberships, and topic | Read |
lettr_get_audience_list | Retrieve one audience list and its current contact count by ID | Read |
lettr_get_audience_property | Retrieve one custom contact-property definition and its fallback value | Read |
lettr_get_audience_segment | Retrieve one dynamic segment's list restriction, complete AND-of-OR condition definition, and | Read |
lettr_get_audience_topic | Retrieve one subscription topic's defaults, visibility, and current contact count | Read |
lettr_get_campaign | Retrieve one campaign's name, subject, sender and reply-to configuration, schedule, rendered | Read |
lettr_get_domain | Retrieve one sending domain's send readiness, DNS records, provider detection, and verification | Read |
lettr_get_email | Retrieve a sent email's delivery state, recipients, schedule metadata, and events by request ID | Read |
lettr_get_scheduled_email | Retrieve a scheduled email's current state and events by transmission ID, including after it | Read |
lettr_get_template | Retrieve an email template's metadata, active HTML or editor JSON content, and version counts | Read |
lettr_get_template_merge_tags | Return required and optional merge tags for a template's active or specified version before | Read |
lettr_get_webhook | Retrieve one webhook's target, enabled state, event selection, authentication mode, and latest | Read |
lettr_list_audience_contacts | Return one cursor-controlled page of contacts, optionally filtered by search text, status | Read |
lettr_list_audience_lists | Return one cursor-controlled page of audience lists with each list's contact count | Read |
lettr_list_audience_properties | Return one cursor-controlled page of custom contact-property definitions and fallback values | Read |
lettr_list_audience_segments | Return one cursor-controlled page of dynamic audience segments, including their complete | Read |
lettr_list_audience_topics | Return one cursor-controlled page of subscription topics with defaults, visibility, and contact | Read |
lettr_list_campaign_events | Return one cursor-controlled page of a campaign's delivery and engagement events, with event | Read |
lettr_list_campaigns | Return one cursor-controlled page of campaigns with complete delivery and engagement | Read |
lettr_list_domains | Return all sending domains with approval, DNS verification, and send-readiness status | Read |
lettr_list_email_events | Return one cursor-controlled page of delivery and engagement events across sent emails, with | Read |
lettr_list_emails | Return one cursor-controlled page of sent emails, optionally filtered by recipient and date | Read |
lettr_list_projects | Return one cursor-controlled page of Lettr projects and their IDs for use with template | Read |
lettr_list_templates | Return one cursor-controlled page of email templates for a project or the team's default project | Read |
lettr_list_webhooks | Return all event webhooks with target, enabled state, event selection, authentication mode, and | Read |
lettr_attach_contacts_to_lists | Attach every combination of 1-1000 contacts and 1-50 audience lists, processing up to 50,000 | Read |
lettr_bulk_create_audience_contacts | Create or recognize up to 1000 normalized, deduplicated contacts | Read |
lettr_create_audience_contact | Create one audience contact with optional properties and list membership | Write |
lettr_create_audience_list | Create a uniquely named audience list for grouping contacts | Write |
lettr_create_audience_property | Define a custom contact property with an immutable name and value type | Write |
