"Gmail login" matching MCP connectors:

Korean SMB marketing: browse, pay by card link, track orders. No login to start; OAuth to link.

Verify email addresses and clean lists to improve deliverability and sender reputation.

Checks what a support agent knew but did not say against its policies. Free tier, no login.

Helpmonks email managementOAuth

com.helpmonks.mcp

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.