Mailyond

Mailyond lets you send and answer email across all your domains. Mail to any address on any domain you connect lands in one inbox, color tagged by project, and your reply goes out from the address the customer wrote to, in the same thread. Every plan includes unlimited addresses on every domain, with no per-inbox fees.

Point a subdomain like hello.yourdomain.com at Mailyond and your main inbox stays where it is. Connecting a domain takes three DNS records (DKIM, Return-Path, MX), about five minutes.

Your app sends from the same domains through a Resend-compatible API with one POST. Already on Resend? Point the Resend SDK at https://mailyond.com/api/external with your Mailyond key and resend.emails.send() keeps working. A hosted MCP server at https://mailyond.com/mcp lets Claude Code, Cursor, Windsurf and VS Code read the inbox across every domain and reply in the right thread.

Pricing: Basic $10/month (5 domains, 5,000 emails), Pro $20/month (10 domains, 10,000 emails, up to 3 members), Agency $40/month (30 domains, 25,000 emails, up to 10 members). 7-day free trial on Basic and Pro.

Built by Rares Serban (BeyondFolder). X: @raress96