Use ChatGPT on its own to brainstorm campaigns, write copy and send the odd email from your own Gmail or Outlook.
Connect ChatGPT to Brew and it designs on-brand emails, sends them from your domain to your list and runs your automations, with you approving every send.
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What ChatGPT can do for your email on its own, and what changes when it connects to Brew.
| ChatGPT alone |   ChatGPT + Brew | |
|---|---|---|
| Key differences | ||
| Designs finished, on-brand emails | ChatGPT alone: Partly. Partly: Writes copy and generates images; you design the email | ChatGPT + Brew: Yes. Layout, copy and images from your brand, ready to send |
| Renders correctly in every inbox | ChatGPT alone: No. Previews HTML pages; nothing on email clients | ChatGPT + Brew: Yes. Email-safe HTML, with inbox rendering tests |
| Sends from your own domain | ChatGPT alone: Partly. Partly: One email at a time from your own Gmail or Outlook | ChatGPT + Brew: Yes. From your verified domain, once you approve |
| Keeps contacts, audiences and unsubscribes | ChatGPT alone: No. No contact list, audiences or opt-outs | ChatGPT + Brew: Yes. Unlimited contacts, audiences and opt-outs in one place |
| Runs automations from your product’s events | ChatGPT alone: No. Cannot trigger emails from signups or purchases | ChatGPT + Brew: Yes. Stripe, Shopify, Clerk, Supabase or your own events |
| Shows what happened after you send | ChatGPT alone: No. No opens, clicks or inbox placement data | ChatGPT + Brew: Yes. Opens, clicks and inbox placement tests |
| ChatGPT alone | ChatGPT + Brew | |
|---|---|---|
| Working on emails | ||
| Writes and rewrites email copy | ChatGPT alone: Yes. Drafts and rewrites copy in writing blocks | ChatGPT + Brew: Yes. Your assistant writes; Brew keeps it on-brand |
| Plans campaigns and lifecycle flows | ChatGPT alone: Yes. Plans campaigns and flows in chat | ChatGPT + Brew: Yes. Then builds them as live automations |
| Remembers your brand for every email | ChatGPT alone: Partly. Partly: Memory, instructions and Projects hold brand notes | ChatGPT + Brew: Yes. Brand files your agent reads every time |
| Edit the design by hand | ChatGPT alone: Partly. Partly: Edit the text it writes, not a layout | ChatGPT + Brew: Yes. Infinite canvas, by hand or in chat |
| Work on emails as a team | ChatGPT alone: Partly. Partly: Shared Projects on paid plans | ChatGPT + Brew: Yes. Unlimited seats and comments on every email |
| Sending and compliance | ||
| Unsubscribe links and suppression | ChatGPT alone: No. Nothing to add or honor unsubscribes | ChatGPT + Brew: Yes. Opt-outs honored on every send |
| Domain health and gradual sending | ChatGPT alone: No. No sending domain to set up or warm up | ChatGPT + Brew: Yes. Domain checks, plus Gradual send for new domains |
| Pricing | ||
| What it costs | ChatGPT alone: Business $25/user a month ($20 billed yearly) for apps that write | ChatGPT + Brew: Brew from $99/month: 10,000 AI credits and 50,000 sends |
ChatGPT Business costs $25 per user a month, or $20 billed yearly, and is where OpenAI documents apps that write. Plus is $20 a month and Pro starts at $100.
Brew is billed on emails sent and AI credits, with unlimited contacts on every plan: a free trial with 500 AI credits and 1,000 sends, then Growth at $99/month for 10,000 AI credits and 50,000 sends.
OpenAI documents apps that write, like sending a campaign, on ChatGPT Business and Enterprise, in beta. Pro gets read-only access in developer mode.
Start a free trial, paste your website so Brew writes your brand files, and connect your sending domain.
On Business, an admin turns it on under Settings → Apps → Advanced settings. On Enterprise, an admin grants it first.
Go to Settings → Apps → Create, enter https://brew.new/api/mcp, choose OAuth, scan the tools and sign in to Brew.
Start a new chat with Brew enabled and describe the email or flow. ChatGPT asks you to confirm before anything is sent.
Connect Claude, ChatGPT, Cursor or Grok over MCP and your agent gets every Brew tool. It designs emails from your brand, builds audiences, runs automations and schedules sends. OAuth and organization-scoped MCP connections ask you to confirm live sends and launches. Brand-scoped API keys can execute permitted calls without the MCP confirmation step.
Paste your website and Brew writes your brand into two files your agent reads for every email. Describe the email and it appears on the canvas, ready to edit by hand or in chat.
We're here to help! Feel free to schedule a call.
Can't find what you're looking for? Contact us at +1-(332)-203-2145 or support@brew.new.
Partly. ChatGPT can brainstorm campaigns, write copy and send the odd email from your own Gmail or Outlook. On its own it does not design a finished, on-brand email, hold your contacts, send from your domain or run automations.
Not marketing email. Since June 2026 ChatGPT can draft and send single emails from your own Gmail or Outlook on Plus and above, but it has no contact list, unsubscribes or sending domain.
Connected to Brew, ChatGPT sends campaigns from your own domain to your audiences, with unsubscribes handled, after you approve.
OpenAI documents apps that write, like sending a campaign, on ChatGPT Business and Enterprise, in beta. Pro gets read-only access in developer mode. Turn on developer mode: On Business, an admin turns it on under Settings → Apps → Advanced settings. On Enterprise, an admin grants it first. Add Brew as an app: Go to Settings → Apps → Create, enter https://brew.new/api/mcp, choose OAuth, scan the tools and sign in to Brew. Ask ChatGPT for an email: Start a new chat with Brew enabled and describe the email or flow. ChatGPT asks you to confirm before anything is sent.
Business or Enterprise. OpenAI documents apps that can write, like sending an email through Brew, on those plans, in beta. On Pro, developer mode gives read-only access, and OpenAI does not say Plus gets write access.
ChatGPT writes good copy, but on its own it does not design the email from your brand. Brew does: it writes your brand into files your agent reads for every email, then designs the layout, copy and images and tests how it renders.
No. Over OAuth, Brew asks you to confirm before anything is sent or goes live, so the assistant drafts and you approve.
ChatGPT Business costs $25 per user a month, or $20 billed yearly, and is where OpenAI documents apps that write. Plus is $20 a month and Pro starts at $100. Brew is billed on emails sent and AI credits, with unlimited contacts on every plan: a free trial with 500 AI credits and 1,000 sends, then Growth at $99/month for 10,000 AI credits and 50,000 sends.
Brew publishes this comparison. Brew Team reviewed the linked first-party documentation. This is a documentation review, not a claim of hands-on testing of every product. Pricing and plan limits can change.
Work at OpenAI? If anything about ChatGPT on this page is wrong or out of date, email support@brew.new and we will correct it.
Updated October 2026
