Mailyond

One email inbox for all your domains, plus a send API for your app. Reply as any domain, one DNS setup each, no per-inbox pricing.

Read and answer mail for all your domains in one place. No forwarding rules, no second service for sending. Right now it hits a forwarding rule, shows up in your personal inbox two days later, and your reply goes out as the wrong person. Both get set up again for every domain you add. A send API gives you logs and a debug view. Answering as support@yourdomain.com is the part that keeps failing DMARC.