If you are vibe-coding websites and want real email working on your domain, Resend is one of the friendlier options to set up. The docs are readable, the API is small, and you can get a transactional email sending in a few minutes without knowing much about mail infrastructure.
The one annoyance was the free tier: it only covered a single verified domain. If you had three projects, you needed three accounts, or you paid.
That changed on August 25. Free teams can now verify up to three domains in any region, at no cost. Same account, same dashboard, three different projects sending from their own domains. You can add them through the dashboard, the CLI, the MCP server, or the API.
The rest of the free plan is unchanged: 3,000 emails a month with a cap of 100 a day, and 1,000 marketing contacts. That is fine for contact forms, password resets, and receipts on a small site. If you outgrow it, Pro starts at $20 a month for 50,000 emails with no daily cap.
As a vibecoder you almost certainly have more than one project going. Three domains on one free account is a genuinely useful bump.
And if the only thing you need is a contact form that lands in your inbox, you can skip email infrastructure entirely and use one of the two form backends I wrote about earlier.