Founding terms

Last updated: 13 August 2026

Welcome to the founding cohort of Envelope.

This is an early access program being refined in the open. Rough edges are expected, and you're helping shape it. You'll accept these terms by ticking the box on the Stripe payment link.

The founding rate is $250 a month, billed by Stripe from the day your channel is provisioned. That's half the standard price, locked for as long as you stay continuously subscribed. Rolling monthly, cancel anytime, effective at the end of the current month; no term, no fee. If you leave and later rejoin, the founding rate will not be guaranteed. If you're buying as an individual rather than a business, UK consumer law also gives you 14 days to cancel; ticking the box at checkout asks us to start straight away, which gives that up once your channel is provisioned.

You get a private Slack channel, a dedicated design agent you prompt directly, and Antimo in the loop. Delivery is via Slack Connect; if your side needs a paid Slack plan, you'll have to bear that cost. While we tune Envelope, usage limits are recalibrated weekly; this is a feature of being early. You'll never get a separate charge.

We use channel transcripts and logs to train the RED Design Engine: a non-exclusive, royalty-free licence that survives for material generated during the programme. Your brand, your confidential material and the outputs themselves stay yours. We never publish your work or show it to anyone else. Keep out, or flag, anything you don't want used.

Your outputs are yours, during and after. Export everything, anytime. If you cancel, the live engine stops; your files don't. Personal data is deleted on request.

Envelope is provided as is, no warranty. Our total liability is capped at the fees you paid in the two months before the claim. Either side can end participation at any time. These terms may change with notice; your locked rate never does.

Your contract is with 4923 LTD, trading as RED, a company registered in England and Wales (company number 15996709), registered office 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ. These terms are governed by the law of England and Wales.

Everything runs under UK GDPR. Data may pass through Anthropic, Slack and Stripe — plus a call note-taker, only if you opt into a call — under their standard safeguards. For access, export, correction or erasure, email antimo@slash.red