XMails · Super intelligence for your newsletter.

Good things
deserve an audience.

Turn your products, services, and ideas into newsletters people look forward to. Create with AI, customize every detail, and send from your own domain.

Your domain. Your audience. Your voice.

One good thingPreview
From One good thingSubject A slower kind of Sunday
ONE GOOD THINGISSUE Nº 024

A LETTER FOR YOUR SUNDAY

Less scrolling.
More living.

Some of the best things don’t ask for your attention. They simply wait for you to notice.

Here’s to finding your one good thing. ↗
Something worth sending.Made with XMails
Built for a more personal internet.
Email newsletters Web publishing API & MCP

FROM FIRST DRAFT TO THEIR INBOX

Your ideas have somewhere to go.

Everything you need to keep showing up for your readers.

01

Make it worth opening.

Generate a newsletter from your catalog with AI, or build it yourself with drag and drop. Make every detail yours.

02

Know your people.

Organize contacts into groups, understand engagement, and send something that feels relevant.

03

Give every issue a home.

Your newsletter lives beyond the inbox. Publish a web archive readers can explore and share.

SMALL TOOL. OPEN POSSIBILITIES.

A human touch.
An open foundation.

Use the dashboard when inspiration strikes. Connect your tools when you want a hand. The same newsletter actions are available through the API and MCP.

Explore the docs
Your next issue, connected.
✳

Help me turn this week’s notes into a newsletter draft.

Space for your workflow.

Manage campaigns and contacts from the dashboard, your code, or a connected AI assistant.

Meet the MCP server

A few good questions.

Can I use my own domain?+

Yes. Connect a sending domain and send newsletters with your own identity. The dashboard walks you through the DNS records.

Can I bring my existing audience?+

Yes. Import your contacts, organize them with tags, and keep building the connection you already have.

Is XMails open source?+

Yes. XMails is available under the AGPL-3.0 license. You can inspect the code and host your own instance.

YOUR NEXT CHAPTER STARTS WITH A LETTER.

Go on. Hit send.

There’s someone out there who wants to hear from you.

Make yourself at home Open source. Yours to make your own.