Potion

Potion is a content writing tool. A Notion-style email builder that pairs a document-like editor with AI autocompletion, aimed at people who want to draft HTML email quickly without a block-based canvas. Output is tested across Gmail, Apple Mail, Outlook, Yahoo Mail, Hey and Superhuman, and you can start without signup or a credit card.

Potion is a browser-based email builder that borrows the editing model of Notion and layers AI autocompletion on top of it. Instead of dragging blocks around a rigid canvas, you write inside a document-like editor where content flows naturally and structure comes from typing. The AI layer suggests and completes copy as you go, which shortens the blank-page phase of drafting a campaign or a one-off announcement. The stated audience is anyone who writes email without wanting to fight a layout tool: small marketing teams, founders sending product updates, newsletter writers, and freelancers producing client mail. The workflow is deliberately lightweight. You land on the create page, start typing the message, and let autocompletion carry the sentence or paragraph forward when you stall. The output is then checked against the major inboxes, and the site names Gmail, Apple Mail, Outlook, Yahoo Mail, Hey and Superhuman as tested clients, so the formatting is validated against real rendering engines rather than a single preview pane. Among alternatives, Potion sits closer to writing tools than to full campaign platforms. It is not positioned as a CRM, an automation engine or a drag-and-drop template library. The comparison that matters is with block-based builders and with plain documents: Potion keeps the speed of a text editor while producing HTML email that survives the client gauntlet. That makes it a reasonable fit for teams that already have a sending system and only need the composition layer. Onboarding is unusually frictionless. The site promises no signup and no credit card before you begin, so the tool can be evaluated in the time it takes to draft a paragraph. Because the homepage is thin on specifics, treat Potion as a focused drafting utility first and confirm any deeper requirements (team features, exports, account management) directly before committing a workflow to it.