"Shields.io" matching MCP connectors:

MCP server for Tomba email finder, verification, and contact enrichment API

Emailable MCP — wraps the Emailable email verification API (emailable.com)

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

Hunter.io MCP — wraps the Hunter.io email finder & verification API (hunter.io)

Findymail MCP — B2B email finder & reverse-email lookup (findymail.com)

Klaviyo MCP Pack — wraps the Klaviyo API for email marketing

could-have-been-email MCP — wraps StupidAPIs (requires X-API-Key)

ActiveCampaign MCP Pack — email marketing + CRM (API v3).

Mailchimp MCP Pack — manage audiences, campaigns, and members via Mailchimp Marketing API.

Gmail MCP Pack

Postmark MCP.

Send email and read templates, marketing contacts, lists, stats, bounces and unsubscribes.

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

Read email/chat conversations, messages, contacts and teams; draft, send and update threads.

Read subscribers, groups, campaigns, fields, segments, automations, webhooks; safe additive writes.

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

Manage Loops contacts, mailing lists, and transactional/event emails.

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

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

Outlook Mail (Microsoft 365) MCP Pack