"Proton Mail" matching MCP connectors:

Phone, SMS & email for AI agents — one remote MCP endpoint, OAuth login, zero install.

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).

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.

UK shipping labels for AI agents: buy Royal Mail Tracked and more, track and refund via Shippo.

Shared inbox and customer support platform for teams. Manage email conversations, assignments, labels, internal notes, contacts, and replies. 29 tools. Connect with your Helpmonks access token.

Email inbox API for AI agents: read, search, draft, send, and triage mail over Streamable HTTP.

AI email inbox and sending tools with attachments, search, live events, and webhooks.

The first MCP server for physical mail: send postcards and letters, manage lists and campaigns.

Email + calendar for any IMAP/CalDAV mailbox — OVH, Gandi, iCloud, Zoho, Fastmail and more.

Goal-directed email outreach: research, draft, send, triage replies. Real data, never fabricated.

Manage Scribe email signatures: templates, teammates, smart fields and campaigns, via OAuth.

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

Give an AI agent its own inbox — receive email as a webhook, send over a verified domain.

Email for AI agents — send, receive as a webhook, manage domains, templates, routing.

Turn inbound email into a webhook — verify, parse, route, and store incoming messages.

Receive inbound email as clean JSON — manage domains, routes, and webhooks. MailKite.

Send transactional email over a verified domain — templates, attachments, custom headers.

Disposable email inboxes for AI agents — read messages and verification codes.

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

PaymentOracle — ES256K-signed receipts for x402 payments on USDC+EURC (Base) and XRP+RLUSD (XRPL).