"A scheduler that invokes an agent based on a predefined schedule" matching MCP connectors:

Crevio's MCP server lets an agent run a real online business, not just read from one. It exposes a delegation surface (ask_crevio, start_task, wait_for_run, send_message, resolve_approvals) plus code_search and code_execute for calling the full Crevio REST API - products, customers, orders, email, socials, and sites.

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

Coldrig — cold-email infra run by your agent: 28 MCP tools, live sending, free sandbox. $99/mo.

An AI agent that runs your online business: products, orders, customers, email, and sites.

Gives an AI agent its own email address: create mailboxes, send and reply, read the inbox, and block until a reply arrives. Includes a draft lifecycle so a human can approve outbound mail before it sends.

Manage Subscribers, Broadcasts, Sequences, Automations, and reporting in Mailrith.

Email OS for agents - real-inbox search, triage, commitments, and a verifiable BEC hard-stop.

Give an agent its own inbox: send, receive, and pull signup codes from real email.

send-that-email MCP — wraps StupidAPIs (requires X-API-Key)

Manage lists, contacts and campaigns, and read campaign performance reports on EmailOctopus.

Check email deliverability for a domain: MX, SPF, DKIM, DMARC, blacklists. Graded, no key.

Scan and fix a domain's email deliverability (SPF, DKIM, DMARC, MTA-STS, BIMI, DNS blocklists).

Email marketing y transaccional AI-native: campañas, correos 1-a-1, contactos, flujos y métricas.

AI-powered virtual assistant that connects to Gmail, Outlook, Slack, Salesforce, HubSpot, Google Calendar, DocuSign, QuickBooks, and 20+ other services. Manage your entire professional life through a single Claude conversation — email, calendar, CRM, documents, travel, expenses, and more.

Read, search, send, organize, draft and schedule email across your inboxes from any MCP client.

Microsoft Exchange MCP server - hosted, multi-user, incl. Exchange on-prem & hybrid (EWS)

Connect any email mailbox (Gmail, Outlook, IMAP/SMTP, OVH, LWS, Infomaniak...) to Claude, ChatGPT & any MCP client. Read, send, reply, schedule and search emails. No code, OAuth2, EU-hosted (GDPR). 15 email tools.

Shipmail MCP server for AI agent custom-domain email inboxes with REST API and webhooks.

Your unified inbox — everything that reaches you, understood and actionable from your AI assistant.

Test-inbox API for email and SMS: create inboxes, long-poll messages, extract OTPs and links. 34 tools; bearer auth with an mfx_ API key (free tier).