Terms of use
These terms cover the Lettium public beta. Last updated 29 October 2026.
The service
Lettium is a canvas for email newsletters. You design on an artboard, can start from an AI draft, review on the canvas, and export HTML.
Your account
You need an account to use the app. You can create one with email and a password, or with Google. You are responsible for activity on that account.
Your content
You keep what you design. You let Lettium host and process it so the product can run, including the processing described in the privacy policy when you use those features.
Acceptable use
Do not use Lettium for unlawful content or for unsolicited bulk mail. Lettium checks a campaign before it sends and can refuse one that breaks these terms.
AI drafts
A layout from AI is a draft. You review it on the artboard before you export it or send it.
Export and sending
A test email is one message to an address you choose. It is not a preview of every inbox.
Saving HTML to another platform, or sending a campaign through your own SMTP relay, does not make Lettium the sender. The destination or your mail server sends the campaign.
The beta
Lettium is a public beta. The product can change. It is provided as available, without a promise that it will be uninterrupted or error-free.
Ending use
You can delete the account in settings. Deleting it removes the account and the files it owns.
Changes
Lettium can update these terms. This page shows the current terms.
Contact
Questions about these terms go through the contact form.