"Databases or database systems written in Python, like Postgres" matching MCP connectors:

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

Verify email deliverability & find business emails (single or bulk) via the Verifox API.

MCP server for Nylas — read email, calendars, events and contacts, and send email or create events.

Internet identity for AI agents: register or broker domains, email, DNS - pay by card or USDC.

MCP server for e-mail testing: create disposable inboxes, wait for delivery, and extract e-mail content or links - all from your AI agent or test automation workflow. Get a free API key on https://app.zyntra.app/

Phone, SMS & email for AI agents. One remote MCP server (Streamable HTTP, OAuth or API-key auth, no local install) exposing call, sms, email, and event tools; also usable via CLI, Python SDK, and OpenAPI. Self-hostable, AGPLv3.

Open-source MCP server that gives AI agents access to real email and calendar in one npm install. Solves the problem of AI agents hitting a wall when they need your inbox.

Apollo connects your sales data and outreach tools directly to your agent . Ask it to find leads, look up a company, write and send emails, or check how a campaign is performing. All from a conversation, without opening another tab.

Heldly reads your Google Calendar directly, places tentative holds on every host's calendar, and emails the invitee a one-click picker. The moment the invitee picks, Heldly confirms the chosen slot and deletes the siblings across every host's calendar in the same request. No reusable booking page, no in-app form, no calendar cleanup.

InboxPolicy is an MCP email-verification server for agents. Get an actionable verdict: send, send_with_caution, review, retry_later, or avoid, with confidence and SMTP evidence, plus tools for detailed verification, asynchronous batches, and usage tracking

Stateful email for AI agents — read inboxes, reply in-thread, draft with approval.

Send and Receive email via your own address at your domain or unlimited free inboxes. Send Email Receive email with Agent routes or webhooks Route email to other addresses Add your custom domain (unlimited mailboxes) Add unlimited inboxes 3K emails sent per month free per domain 50K for $10/month

Email for agents: newsletters, subscribers, contacts, broadcasts. OAuth sign-in, no API key.

Let your AI agent notify you by email, Slack, Discord, or webhook. One tool: send_notification.

Authenticated email gateway for AI agents. Each agent gets its own deliverable email address with SPF/DKIM-verified inbound and optional human-in-the-loop approval on outbound. 18 tools covering send, receive, reply with threading preserved, and HITL approval queue.

Disposable inboxes for AI agents: create, wait for delivery, and extract email content or links.

Cold email, email warmup, LinkedIn outreach, and B2B lead database via MCP.