All comparisons
this+that vs Superhuman
Speed through your inbox, or let it work for you
Superhuman Mail (now part of the Superhuman Suite, after Grammarly acquired Superhuman and took its name) is the fastest email client ever made. this+that is an AI agent that reads your messages across every channel and handles what comes next: tasks extracted, workflows run, your team in the loop.
The short version
Two genuinely different philosophies
Superhuman's thesis is speed: get you to inbox zero faster, help you reply better, make email feel effortless. It's exceptional at that. Since the Grammarly acquisition, Superhuman Mail also sits inside a wider suite (Grammarly, Coda, and Superhuman Go), and Go adds a layer of AI agents that act across your tools. this+that's thesis is delegation: don't just move through the messages faster, have the work that comes out of them handled automatically. If you want to be the fastest person in your inbox, Superhuman is the better choice. If you want your inbox and your other channels to create fewer open loops in your day, this+that is built for that.
Feature by feature
How the two products compare across the things that matter most.
| Topic | Superhuman | this+that |
|---|---|---|
| Core philosophy | Make you faster. Sub-100ms keyboard interactions. You process every message; it just helps you move. | Delegate the work that follows messages. Extract tasks, run workflows, keep teams in sync, without you managing it manually. |
| Task extraction | Superhuman Go turns meeting notes into action items and surfaces proactive to-dos, but there is no persistent cross-channel task layer to assign, prioritize, and track. | DoBox reads every conversation and extracts requests, decisions, follow-ups, commitments, and deadlines, then holds them as assignable tasks with priorities, due dates, and labels. |
| Workflow automation | Superhuman Go is an agent ecosystem: it schedules meetings from threads, drafts with CRM context, and runs first- and third-party agents across 100+ integrations, with an Agents SDK. | A workflow builder you author in plain language. 32 action types, conditional logic, loops, and sub-agents, so a single workflow can branch and chain steps on its own. |
| Team features | Shared Conversations, Team Comments, Team Read Statuses, Team Snippets. Strong team email coordination: visibility into who has read and replied to what. | Shared task view, task assignment, workflow delegation to teammates. Work-level coordination, not just message-level. |
| AI drafts | Instant Reply drafts in your voice. Learned from your writing. Strong and polished. | Interactive AI reply button drafts from your direction and your brain, and draft-reply also runs as a workflow action. Less personalized to your trained voice than Instant Reply. |
| CRM | Salesforce and HubSpot sidebar. Deal status, contact history, recent opens, automatic reminders. | HubSpot via MCP. Any CRM with an API can be connected as a workflow step. |
| Channels | The email client (Superhuman Mail) handles Gmail and Outlook, with a Calendar Overview wrapping your Google or Outlook calendar. Superhuman Go reaches further through its integration layer, but the inbox itself is email only. | One inbox across Gmail, Outlook, Slack, Google Chat, and Telegram, with Teams ingested and Google and Outlook calendars connected. WhatsApp, Instagram, and Messenger are coming soon. |
| Calendar surface | Calendar Overview shows your connected Google or Outlook calendar inside Superhuman. Booking Pages, Share Availability, and Team Scheduling cover the scheduling layer. | Full unified calendar UI across every connected account (month, week, day, agenda), publishable booking pages with a live widget that books against your real calendar, team availability lookups, and calendar steps inside workflows. |
| External integrations | CRM sidebar (Salesforce, HubSpot) and a Slack integration. No open integration standard for arbitrary tool connections. | Open MCP standard. GitHub, Notion, Jira, Dropbox, Box built-in. Connect any tool with an API. |
| Speed / keyboard UX | Best in class. The product was designed ground-up for keyboard-first speed. | Not the focus. this+that is a unified inbox plus an agent, built around delegating work rather than raw keyboard throughput. |
| Send timing | Smart Send: optimizes delivery time for each recipient. | Not available. |
| Pricing | Superhuman Mail is roughly $25/mo (Starter) and $33 to $40/mo (Business), billed annually, within the wider Superhuman Suite. | Free to start, no credit card required. |
What Superhuman does better
- The fastest email client available. If keyboard-driven inbox processing is what you need, nothing comes close.
- AI reply drafts trained to sound like you specifically. Instant Reply is genuinely good.
- Sales features are mature: CRM sidebar with Salesforce and HubSpot, recent opens tracking, automatic reminders.
- Team features are genuinely strong: Shared Conversations, Team Comments, Team Read Statuses, Team Snippets, and a Slack integration. Real team visibility into the inbox.
- Send timing optimization: Smart Send picks the best delivery window per recipient.
- Scheduling layer is real: Booking Pages, Share Availability, and Team Scheduling on top of a Calendar Overview that wraps your existing Google or Outlook calendar.
- Superhuman Go brings an agent ecosystem: it schedules meetings from threads, drafts with CRM context, and runs first- and third-party agents across 100+ integrations, with an Agents SDK.
- Part of a broader suite since the Grammarly acquisition: Superhuman Mail sits alongside Grammarly, Coda, and Superhuman Go.
- Long track record and large enterprise customer base (OpenAI, Figma, Cursor, Notion, Uber, Brex).
What this+that does differently
- Task extraction: every message is scanned for requests, commitments, deadlines, and follow-ups, automatically surfaced in DoBox.
- Workflow automation with depth: describe a process in plain language and this+that builds and runs it. 32 action types, conditional logic, loops, and sub-agents across email, calendar, Slack, and connected tools.
- Multi-channel: reads Gmail, Outlook, Slack, Google Chat, and Telegram (with Teams ingested) and treats them as one stream of incoming work.
- Calendar as a first-class surface, not a sidecar to email: a full month / week / day / agenda UI across every connected Google or Outlook account, color-coded by calendar.
- Brain-powered booking pages: publish a page where an FAQ answers common visitor questions and a live widget books against your real calendar, and publish shareable knowledge pages with version history that ground the assistant in what your team has written down.
- Calendar steps inside workflows: RSVP, create events, reschedule, and check team availability run as automation steps alongside drafting replies, updating CRM, and routing tasks.
- Open MCP: connect any tool with an API, not just CRM. GitHub, Jira, Notion, Dropbox, internal APIs.
- Work-level team coordination: assign tasks extracted from messages, not just comment on email threads.
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