Unboxd vs Superhuman in 2026: AI Email Secretary vs Speed-First Email Client

Superhuman is one of the most well-known email tools on the market. Acquired by Grammarly in July 2025 (the combined company rebranded to "Superhuman" in October 2025), it has built a reputation as the fastest email client available, with keyboard-driven workflows, instant search, and a polished interface. Unboxd takes a fundamentally different approach: instead of making you faster at reading email, it reduces your inbox time by 90% with AI that reads, extracts action items, and drafts replies for you.

This is not a "which is better" comparison. These tools solve different problems. This guide helps you understand which problem you actually have.

Quick comparison at a glance

How each tool works

How Unboxd works

Unboxd connects to your email account (Gmail, Outlook, or any IMAP provider) and uses advanced AI to read and understand every incoming email. It categorizes each email into one of three buckets: Action Items (things you need to do, with deadlines extracted automatically), Highlights (important things to know), and FYIs (email noise like newsletters, delivery updates, payment invoices). Each bucket has intelligent subcategories (bookings, finances, conversations, project updates) and you can create your own custom subcategories that the AI automatically populates.

Every email gets a short AI-generated title and a rich paragraph summary, so you rarely need to open individual messages. In a glance, you see everything that matters: action items first, then highlights, then FYIs. Unboxd also includes AI-powered search across all your connected accounts and can draft replies using AI. The built-in AI secretary learns from lessons you teach it, improving its prioritization and categorization over time.

How Superhuman works

Superhuman is a full email client that replaces the Gmail or Outlook web interface. It downloads and indexes your email, then provides a significantly faster experience for reading, triaging, and replying. Key features include:

• Keyboard shortcuts for every action (Vim-inspired, designed for speed)
• Split inbox that separates important messages from everything else
• Instant search across your entire email archive
• AI auto-drafts and instant replies generated from short phrases, using context from your inbox, calendar, and web
• Auto Summarize of email threads into one-line summaries that update in real time
• Auto Labels that classify emails (response needed, waiting on, meetings, marketing)
• Ask AI for natural language search across your inbox and calendar
• Read receipts that show when and on which device recipients open your emails
• Scheduled send, snooze, and auto follow-up reminders
• CRM integrations with HubSpot, Salesforce, and Pipedrive

Superhuman is designed for people who process high volumes of email and want to do it faster. It does not eliminate the need to read email; it makes the experience of reading and responding as efficient as possible.

Key differences

Intelligence vs. speed

This is the core philosophical difference. Unboxd's premise is that you should not have to read most emails. Only 12% of emails contain action items that require your attention. Unboxd finds that 12% and presents it in a briefing, saving you from reading the other 88%.

Superhuman's philosophy is that email is unavoidable, so you should be able to process it as fast as possible. If you get through your inbox in 20 minutes instead of 60 minutes, that is 40 minutes saved.

Both approaches have merit, but they suit different workflows. If you can delegate most email to AI and only act on extracted action items, Unboxd delivers a 90% reduction in inbox time. If you need to personally read and respond to a high percentage of your emails, Superhuman's speed advantage matters more.

Action items vs. email management

Unboxd automatically extracts structured action items: "Review the contract and send feedback to Sarah by Friday." These appear in your briefing with deadlines, creating an automatic task list from your email. You do not need to read the original email unless you choose to.

Superhuman helps you manage email efficiently but does not extract action items. You still read each email, identify tasks, and track deadlines yourself. The AI features help with writing responses faster and summarizing long threads, but the cognitive work of triaging stays with you.

Price

Unboxd's Plus plan starts at $7.50/month (yearly billing), with the Pro plan at $12.50/month. Since the Grammarly acquisition, Superhuman Mail is only available on the Business plan at $33/month (annually) or $40/month (monthly). It comes bundled with Grammarly, Coda, and Superhuman Go; you cannot buy Superhuman Mail standalone. For individuals, Unboxd is approximately 77% less expensive. For teams, the cost difference compounds significantly.

Email provider support

Unboxd supports Gmail, Outlook, and any IMAP provider (Yahoo, ProtonMail, company servers, custom domains). Superhuman supports Gmail and Outlook. If you use a non-Gmail, non-Outlook email provider, Superhuman is not an option while Unboxd works.

Can you use both together?

Yes. Unboxd is an AI email client, but it does not conflict with Superhuman. You could use Superhuman for reading and replying, and Unboxd for daily briefings and action item tracking. However, most Unboxd users find they check their email client far less once they have a noiseless, intelligent experience that shows what matters in a glance.

Who should choose Unboxd?

• You want to stop reading email. Your goal is to see only action items and highlights, not individual messages.
• You need automatic action item extraction. Deadlines and tasks pulled from email without manual effort.
• Budget matters. At $7.50-12.50/mo, Unboxd costs a fraction of Superhuman.
• You use IMAP email. Company email, Yahoo, ProtonMail, or custom domains that Superhuman does not support.
• Privacy is critical. Zero-access AES-256-GCM encryption with per-user keys and granular blocking controls.

Who should choose Superhuman?

• You need to read and reply to most of your emails. Your role requires personal responses to a high volume of messages.
• Speed is everything. Keyboard-driven workflow and instant search matter for how you work.
• You want advanced AI writing assistance. Autocomplete and inline editing powered by Grammarly's technology.
• You need read receipts and scheduling. Features like knowing when someone reads your email and timing your sends.
• You want a complete email client replacement. One tool for reading, writing, searching, and managing all email.

Frequently asked questions

What is the difference between Unboxd and Superhuman?

Unboxd is an intelligent email client that reads your emails, extracts action items with deadlines, summarizes and categorizes every email, and filters out the noise, so you spend 90% less time on email. Superhuman is a premium email client designed for speed, with keyboard shortcuts, split inbox, and AI features like email summaries and draft assistance. Unboxd replaces the act of reading email; Superhuman makes reading email faster.

Is Unboxd cheaper than Superhuman?

Yes. Unboxd starts at $7.50/month with yearly billing. After the 2025 Grammarly acquisition, Superhuman Mail requires the Business plan at $33/month (yearly). Unboxd is approximately 77% less expensive at the entry level while providing AI action item extraction that Superhuman does not offer.

Does Superhuman extract action items from emails?

Superhuman has AI features including email summaries and writing assistance, but it does not automatically extract action items with deadlines from your emails the way Unboxd does. With Superhuman, you still read each email and identify action items yourself.

Can I use Unboxd and Superhuman together?

Yes. Unboxd works alongside any email client including Superhuman. You could use Superhuman as your primary client and Unboxd for an intelligent, noiseless view of everything that matters.