# Superhuman vs Brew: one is for your inbox, the other is for the emails your customers receive

Canonical: https://brew.new/blog/superhuman-vs-brew
Author: Philip Sørensen
Published: 2026-10-12
Updated: 2026-10-12

Brew publishes this comparison. We reviewed Superhuman's own product, plan and help pages on October 12, 2026; this is a documentation comparison, not a claim of hands-on testing. Check current plans on Superhuman's pricing page.

Your team lives in Superhuman. Replies go out fast, the inbox is at zero by lunch, and someone asks the obvious next question: can we send the launch announcement from here too? Or the onboarding emails, or the monthly newsletter?

For managed campaigns and subscriber newsletters, use an email platform. Superhuman handles your inbox and can also help with personalized outreach through its MCP server. Brew designs and sends marketing, lifecycle and transactional email to your customers. Teams that need both inbox work and managed customer email can use both tools.

## Key takeaways

- Superhuman Mail is an email client. It connects to your Gmail or Microsoft 365 account and makes reading, triaging and replying faster, with AI drafting built in.
- Its plans list no managed subscriber lists, campaigns or audience features. MCP can send personalized outreach to supplied contacts, through your own Gmail or Outlook account.
- Brew is an email platform for customer email. Your AI agent designs finished, on-brand emails, sends them from your domain and runs the automations.
- Both have MCP servers. Superhuman's lets an assistant work in your inbox and send personalized outreach. Brew's lets an agent run your marketing, lifecycle and transactional email.

## What Superhuman is for

Superhuman calls its mail app [the most productive email app ever made](https://superhuman.com/apps/mail). It runs on the web through a Chrome extension, on Mac and Windows, and on iOS and Android. Its help center says it supports [Gmail and Microsoft 365 hosted accounts](https://help.superhuman.com/hc/en-us/articles/46005777934733-Managing-Accounts), and you can add as many of them as you like.

The features are about your own inbox: Split Inbox, Auto Drafts, Auto Reminders, Ask AI, and Shared Conversations and Team Comments for working on threads together. The homepage also lists Auto Labels, Auto Archive and Daily Briefs.

Superhuman Mail is now one app in a wider Superhuman suite, which also includes Docs, Calendar and AI agents such as Grammarly. This article is only about Mail.

Pricing is per seat. The [Mail plans page](https://superhuman.com/plans/mail) lists Starter at $25 and Business at $33 per member per month, billed annually, with Enterprise on request. Starter and Business allow up to 25 seats.

Superhuman also has an [MCP server](https://help.superhuman.com/hc/en-us/articles/46005696690317-Superhuman-Mail-MCP-Server) on the Business plan and above. It lets Claude, ChatGPT, Cursor and other clients search your inbox and calendar, draft replies in your voice and send email from your account. Its [MCP use cases](https://help.superhuman.com/hc/en-us/articles/46005872462605-Superhuman-Mail-MCP-Use-Cases) include personalized outreach to supplied contacts and follow-ups to non-responders. That is useful for a busy founder or salesperson. These sends still use your personal mailbox.

## What Superhuman is not for

Superhuman works on top of the Gmail or Outlook account you connect, so your mail goes out from that mailbox. That matters as soon as volume goes up. Superhuman's help article on [Gmail rate limiting](https://help.superhuman.com/hc/en-us/articles/46005536630669-Gmail-Rate-Limiting) names "sending large volumes of emails" in a short period as a common cause of Gmail restricting your account, with restrictions lifting after 24 hours of lower usage.

We found no managed subscriber lists, audience segments, newsletter campaigns or recipient unsubscribe management on Superhuman's plans page or in its help center. Its MCP outreach is a different workflow from managing subscriber campaigns. Superhuman's own [blog post on group emailing](https://blog.superhuman.com/group-emailing/) points marketing teams that send newsletters to big lists toward a different tool.

So Superhuman is the wrong place for:

- Newsletters and product announcements to your customer list.
- Onboarding, trial and win-back sequences triggered by what users do.
- Receipts, password resets and other transactional email sent by your app.
- Designed HTML emails with your brand's layout, images and footer.

Sending marketing email from your personal work mailbox also puts your day-to-day inbox reputation on the line. One complaint-heavy announcement can affect the account you use to talk to customers and investors.

## What Brew is for

[Brew](/) is an AI-native email platform for the email your customers receive. It reads your website and brand files into an editable brand document. From a prompt, your agent produces a finished email: layout, copy, images and footer, in your brand. You can edit it on a canvas or by prompt, and it sends from your own domain.

The same agent runs the rest of the work:

- Audiences and contacts, with unlimited contacts on every plan.
- One-off campaigns and newsletters.
- Automations such as onboarding, trial conversion and win-back. You describe the trigger, emails and waits, and Brew builds the flow. You can also start from the [flows gallery](/browse/flows).
- Transactional email through a domain with a transactional sending purpose. The [transactional emails guide](/blog/transactional-emails) covers the setup.
- Product data from tools such as Stripe, Supabase and Shopify. See [integrations](/browse/integrations).

Brew has an [MCP server](/mcp) for Claude, ChatGPT, Cursor and Grok, plus a REST API, a typed SDK and a CLI. The [MCP launch post](/blog/brew-mcp) shows how an assistant works with your brand and records. On OAuth connections, a call that emails people asks for your confirmation before it sends.

[Pricing](/pricing) is based on sends and AI credits, not seats or contacts. You can start free with 500 AI credits and 1,000 sends a month. Growth is $99 a month for 10,000 credits and 50,000 sends. Pro is $249 a month for 25,000 credits and 200,000 sends.

Brew is not an inbox. It does not replace Gmail, Outlook or Superhuman for reading and answering your own email.

## Superhuman vs Brew at a glance

| | Superhuman Mail | Brew |
| --- | --- | --- |
| What it is | Email client for your own inbox | Email platform for customer email |
| Main job | Read, triage and reply faster | Design, send and automate email to customers |
| Sends through | Your connected Gmail or Microsoft 365 account | Your own verified sending domain |
| Managed subscriber lists and audiences | None listed | Yes, unlimited contacts |
| Newsletter campaigns | None listed | Yes |
| Personalized outreach | Yes, through MCP from your mailbox | Customer email sent from your verified domain |
| Automated sequences | MCP outreach follow-ups; no product-event lifecycle builder listed | Yes, triggered by events |
| Transactional email from your app | None listed | Yes, by API, SDK or MCP |
| Designed, on-brand HTML email | Not a design tool | Yes, generated from your brand |
| AI | Drafts replies and outreach, summarizes, labels, searches | Designs emails, builds flows, sends and reports |
| MCP server | Yes, Business plan and above | Yes |
| Pricing | Per seat, from $25/member/month billed annually | By sends and AI credits; free to start, Growth $99/mo |

## Which one do you need?

Choose Superhuman if your problem is your own inbox. You get too much email, you reply too slowly, or your team needs to work on threads together. Its MCP server can also help with personalized outreach from that mailbox.

Choose Brew if your problem is email to customers. You need a newsletter, an onboarding sequence, product announcements or app emails, and you want them designed and sent without a designer or a template developer.

Use both if you have both problems, which most startups and SaaS teams do. A common setup: founders and sales work in Superhuman, while Brew sends the campaigns and lifecycle email from a separate sending domain. When customers reply to a Brew campaign, the replies can land in a monitored inbox that your team reads in Superhuman.

## Frequently asked questions

### Can I use Superhuman for marketing emails?

Superhuman's MCP server supports personalized outreach from your Gmail or Outlook account. For managed subscriber campaigns and newsletters, its plans list no subscriber lists, audience features or recipient unsubscribe management. High volume can also get your account rate-limited by Gmail. Use an email platform such as Brew for those campaigns.

### Can Superhuman send newsletters or bulk email?

Superhuman's MCP server can send individualized outreach to supplied contacts and help with follow-ups. It lists no managed subscriber lists, recipient unsubscribe management or newsletter templates. For subscriber newsletters, use a marketing email platform; Superhuman's own help center names large-volume sending as a cause of Gmail restrictions.

### What is a Superhuman alternative for sending to customers?

You need an email platform rather than another email client. Brew is one option: your agent designs on-brand emails, sends them from your domain to your contacts and runs automations. Keep Superhuman for your inbox.

### Can I use Superhuman and Brew together?

Yes. There is some overlap in personalized customer outreach, but the main workflows differ. Superhuman handles your inbox and mailbox-based outreach; Brew handles managed marketing, lifecycle and transactional email. Point Brew's reply-to address at an inbox your team reads, and customer replies show up in Superhuman.

### Both have MCP servers. What is the difference?

Superhuman's MCP server lets an assistant search, draft and send from your personal mailbox, including personalized outreach and follow-ups. Brew's MCP server lets an agent build on-brand emails, manage audiences, run campaigns and automations, and send from your company's domain.

## Next step

If your inbox is fine but customer email is not getting done, [start Brew with your domain](/) and ask your agent for the next campaign or onboarding sequence.