Description: Multi-service email MCP server supporting SMTP, transactional APIs (SendGrid, Mailgun, Resend), local testing (MailHog, Mailpit), and webhook channels (Slack, Discord). Covers folder management, search, filtering, label organization, and account configuration.

Trigger Phrases

"Configure a new email service"
"Search my inbox for [query]"
"Organize emails into folders"
"Add labels to messages about [topic]"
"List all configured email services"
"Test email connectivity"
"Remove an email service"

Tools

list_services() — List all configured email services with type, status, and metadata.
email_status(service) — Test connectivity. Use before bulk sends to verify credentials.
send_email(to, subject, body, service, html, cc, bcc, attachments) — Send via configured service.
check_inbox(service, folder, limit, unread_only) — Read inbox via IMAP or local test services.
fetch_email_detail(service, message_id) — Full message body and headers.
delete_email(service, message_id) — Remove messages.
mark_email_read(service, message_id, is_read) — Toggle read/unread status.
search_emails(service, query, folder, limit) — Search by subject, sender, body text, or date range.
remove_service(service_name) — Remove a configured email service.
suggest_email_subject(body, tone) — Generate subject lines via sampling.
email_agentic_assist(goal) — High-level email task automation: "organize my inbox", "archive old newsletters", "find all messages from [sender]".

Prompts

email_compose_request — Structured ask to draft an email.
email_help_request — Narrow help on one topic.

Web Dashboard

API on the backend port (see repo webapp/start.ps1): /api/status, /api/tools, /api/chat, /api/skills (HTTP Basic: MCP_WEB_USER / MCP_WEB_PASSWORD).
Frontend on port 10812, backend on 10813.

Workflow

Service configuration: list_services() to audit. email_status() to verify each.
Mail operations: check_inbox() for reading, send_email() for sending, search_emails() for discovery.
Organization: Use fetch_email_detail() then mark_email_read() for triage. delete_email() for cleanup.
Automation: email_agentic_assist(goal="archive all emails older than 30 days from newsletter@") for batch operations.

Safety

All external email content is wrapped in safety boundary markers (<<< UNTRUSTED EXTERNAL DATA >>>) to prevent prompt injection.
Unicode zero-width characters and bidi overrides are stripped from incoming email content.

Examples

"Set up Gmail service." → email_status() → verify credentials → check_inbox(service="gmail", limit=10)
"Find all invoices from last month." → search_emails(query="invoice", folder="INBOX", limit=50) → filter by date range
"Organize my inbox." → email_agentic_assist(goal="sort all read emails older than 7 days into archive folder")