Key takeaways
- Superhuman is a dedicated email client; Pebbles Ai is a go-to-market workspace with an inbox inside it.
- Both connect to Gmail and Outlook, so there is nothing to migrate between them.
- Superhuman lists CRM integrations with HubSpot, Salesforce and Pipedrive on its Business plan; Pebbles Ai has its own CRM, labelled Beta.
- Pebbles Ai adds Socialbox chats, lead finding and drafts written from your company knowledge.
What is the difference between Pebbles Ai and Superhuman
Superhuman is an email client, while Pebbles Ai is a go-to-market workspace that includes an email inbox. Superhuman is built for teams on Gmail or Outlook and offers AI writing, Auto Drafts, Auto Reminders and Split Inbox, lists CRM integrations on its Business plan, and now sits in a wider suite with Grammarly, Docs and Go. Pebbles Ai brings research, lead finding, a CRM, outreach drafting, two inboxes, assistants and memory together.
Both connect to Gmail and Outlook, so the difference is scope rather than mailbox. Superhuman goes deep on one surface; Pebbles Ai spreads across the steps around it.
Where is Superhuman stronger
Superhuman is stronger as a dedicated email client. If you work through a heavy inbox all day, a tool designed only for that, with features such as Split Inbox and reminders, will suit you better than an inbox that is one part of a broader workspace.
It also lists CRM integrations with HubSpot, Salesforce and Pipedrive on its Business plan, and a writing suite around the mail client. Pebbles Ai has no native HubSpot or Salesforce connection; its CRM is built in and labelled Beta.
Where does Pebbles Ai work differently
Pebbles Ai works differently because its inbox writes from what it knows about your company and sits beside the work that comes before an email exists. Smartbox handles Gmail and Outlook, with more than one inbox per provider, and Write with AI in Fast, Balanced and Comprehensive modes uses the thread, the recipients and your brand voice.
Socialbox brings LinkedIn, WhatsApp, Instagram and Telegram chats into the same workspace, with LinkedIn network tools, LinkedIn and Instagram posts, LinkedIn search and pacing guards. The assistants can also find fresh leads at 1 to 10 named companies and save them as CRM contacts.
Who should choose Superhuman and who should choose Pebbles Ai
Choose Superhuman if your main problem is the volume of email you read and answer. Choose Pebbles Ai if your main problem is building and working a pipeline across email, LinkedIn and chat.
Picture an illustrative founder selling design software. If her day is mostly investor and customer email, a dedicated email client saves her the most effort. If she also needs to find agencies to sell to, draft first messages in her company's voice and keep replies from LinkedIn and WhatsApp in view, Pebbles Ai covers those steps in one place.
What should you check before switching from Superhuman
Check which email habits you rely on, because both products connect to Gmail and Outlook and there is nothing to migrate. Some people keep a dedicated email client and use Pebbles Ai for prospecting, research and outreach drafts.
- Note the Superhuman features you use daily, such as Auto Reminders or Split Inbox, and decide whether you can work without them in Smartbox.
- Decide whether you need a native HubSpot or Salesforce connection, which Pebbles Ai does not have.
- Connect each mailbox you use; Smartbox supports more than one per provider.
- Try Write with AI in each mode on a real thread before deciding.
Pebbles Ai and Superhuman side by side
How each product approaches email and the work around it. The Superhuman column states only what Superhuman's own pages say.
| Pebbles Ai | Superhuman | |
|---|---|---|
| Primary job | A workspace of AI assistants for research, leads, outreach drafting, CRM and inboxes. | An email client for Gmail and Outlook, part of a suite with Grammarly, Docs and Go. |
| Email inboxes | Smartbox for Gmail and Outlook, with more than one inbox per provider. | Built for teams that use Gmail or Outlook. |
| AI writing in email | Write with AI in Fast, Balanced and Comprehensive modes, using the thread, recipients and brand voice. | AI writing, Auto Drafts, Auto Reminders and Split Inbox. |
| Social and messaging chats | Socialbox for LinkedIn, WhatsApp, Instagram and Telegram chats. | See their site |
| CRM | Built-in CRM, labelled Beta; HubSpot and Salesforce are not native connections. | CRM integrations with HubSpot, Salesforce and Pipedrive on the Business plan. |
| Finding prospects | Find fresh leads finds people by role and location at 1 to 10 named companies. | See their site |
| Pricing model | Seat-based plans with monthly AI credits and leads. | Per-member plans; see their site for what each plan, free or paid, includes. |
Checked 2 November 2026 on each vendor's public pages. "See their site" means we found nothing on their own pages to state.
About Superhuman
AI email client
An email client that works inside Gmail or Outlook, with AI drafting, follow-up reminders and Split Inbox, sold in a suite with Grammarly, Docs and Go; Mail starts on the Business plan.
Best for: Professionals who spend much of the day in Gmail or Outlook and want a dedicated client with AI drafting and reminders.
What its own pages say
- Built for teams that use Gmail or Outlook. Source: Superhuman
- Split Inbox, follow-up reminders and an AI that drafts replies inside Gmail or Outlook. Source: Superhuman
- Mail is included from the Business plan, which lists HubSpot, Salesforce and Pipedrive in the inbox and AI writing matched to your voice and tone; Free and Pro cover Grammarly, Docs and Go. Source: Superhuman
- Free, Pro, Business and Enterprise; Pro and Business per member, Enterprise custom; Mail starts on Business. Source: Superhuman
Where Superhuman is stronger
- A dedicated email client that works inside Gmail or Outlook, with Split Inbox and follow-up reminders.
- HubSpot, Salesforce and Pipedrive in the inbox on Business, and Grammarly in the same suite.
Where Pebbles Ai differs
- One workspace spans research, lead generation, CRM, outreach drafting, two inboxes, assistants, company knowledge, connections and memory, rather than a single point tool.
- Company Intel holds business knowledge and brand voice built from your website, files and pasted text, and the assistants write from it.
- Socialbox brings LinkedIn, WhatsApp, Instagram and Telegram chats into the same workspace, with LinkedIn network tools, LinkedIn and Instagram posts, LinkedIn search and pacing guards.
- Finds fresh leads inside 1 to 10 named target companies by role and location, 1 to 100 per run, landing as CRM contacts with a work email where one is found, a confidence score and a catch-all flag.
Before you switch
- Both connect to Gmail and Outlook; nothing to migrate.
We make Pebbles Ai. Facts about other products come from their own public pages, checked on .
Where Pebbles Ai fits
- CapabilitySmartboxSmartbox works across Gmail and Outlook, with more than one inbox per provider, and Write with AI drafts replies from the thread and your brand voice.
- CapabilitySocialboxSocialbox keeps LinkedIn, WhatsApp, Instagram and Telegram chats in the same workspace as your email.
- FoundationCompany IntelCompany Intel holds your business knowledge and brand voice, which the assistants and Write with AI draw on.
Common questions
Can I use Superhuman and Pebbles Ai together?
Yes. Both connect to Gmail and Outlook, so some people keep their email client and use Pebbles Ai for finding leads, research and outreach drafts.
Does Pebbles Ai connect more than one mailbox?
Yes. Smartbox supports Gmail and Outlook with more than one inbox per provider. It does not merge them into one unified inbox.
Does Pebbles Ai support email providers other than Gmail and Outlook?
No. Smartbox works with Gmail and Outlook only.
Do the Pebbles Ai assistants send email without asking?
That depends on the execution mode. In Manual, where the web app starts, an email send waits for your approval; in Plan it is queued; in Auto it runs without asking. A template send to a CRM segment always asks, in every mode.
About this page. Written by the Pebbles Ai team for people who run sales, marketing and growth. Last updated .
