Jace AI vs Superhuman Mail

Jace AI

• Professionals handling a high volume of email in Gmail or Outlook
• Teams that want incoming email to trigger actions in Slack, Notion or HubSpot
• People managing several inboxes: Pro connects up to 8 accounts

Superhuman Mail

• People on Gmail or Outlook who work through a high volume of email
• Teams that want to share and comment on threads instead of forwarding them
• Sales teams on HubSpot, Salesforce or Pipedrive (Business plan and up)

Jace AI

• There are no native iOS or Android apps yet; the docs suggest using the Gmail or Outlook mobile app alongside the web inbox.
• There is no free plan: Plus and Pro start with a 7-day free trial.
• Usage is metered in monthly credits: 10,000 on Plus and 20,000 on Pro, with higher Pro tiers at prices the page does not list.
• Plus is limited to 2 inboxes and 1 year of email history; custom integrations and MCPs are listed under Pro.

Superhuman Mail

• There is no free plan, and the pricing page does not mention a free trial.
• Built for Gmail and Outlook accounts; the vendor lists no other email providers.
• Auto Drafts, Ask AI and the HubSpot, Salesforce and Pipedrive integrations are not included in Starter.
• Starter and Business stop at 25 seats; single sign-on and SCIM are Enterprise only.

Jace AI

AI email drafts

Writes complete reply drafts in your style, using your signature and context from attachments, calendar and Slack. Drafts are saved to Gmail or Outlook, and follow-up drafts can be prepared after a delay.

AI labels

Built-in labels such as Needs Reply, Waiting, FYI, To Do and Promotion are applied automatically, and you can describe labels of your own for the AI to apply to matching mail.

Rules

Short plain-language instructions, such as which scheduling tool to use or who to CC, that Jace applies when it drafts and acts. Team owners can share a rule with the whole workspace.

AI Flows

A workflow watches for emails that match a description and then drafts replies, creates calendar events, searches the web or updates connected tools such as Notion, Slack and HubSpot.

Chat with your inbox

A chat assistant answers questions from your email history, 1 year on Plus and 3 years on Pro, and can fetch data, create documents and carry out tasks.

Integrations and MCP servers

Built-in connections to Slack, Google Drive and OneDrive, prebuilt MCP servers for tools such as Notion, Linear, GitHub and Salesforce, and support for most remote MCP servers.

Superhuman Mail

Split Inbox

Divides the inbox into separate tabs, for example mail from teammates, VIPs or specific tools, so each stream can be worked through on its own.

Keyboard shortcuts and Snippets

Most actions have a keyboard shortcut, and Snippets insert saved phrases, paragraphs or whole emails as you type.

Superhuman AI

Write with AI, Instant Reply, Auto Summarize and Auto Labels are on every plan. Auto Drafts, Ask AI and the Mail MCP server need Business or Enterprise.

Reminders, snooze and send later

Set a follow-up reminder that fires if nobody replies by a chosen time, snooze threads until they are needed and schedule when a message is sent.

Shared conversations and comments

Share a live view of a thread with teammates, comment on it, work on shared drafts and see when a colleague is already replying.

Calendar and scheduling

See the day's or week's calendar next to an email, create events, share availability and send booking links, with Zoom, Google Meet and Microsoft Teams links.

Jace AI

• Plus Plan$20

  per month, billed yearly; $25 billed monthly

  10,000 credits a month, up to 2 inboxes with unlimited calendars, chat with 1 year of email history, automatic drafts and labels.

• Pro Plan$40

  per month, billed yearly; $50 billed monthly

  20,000 credits a month, up to 8 inboxes, chat with 3 years of history, priority support, custom integrations and MCPs. Higher credit tiers cost more.

• Enterprise PlanCustom

  For bigger teams: white-glove setup, usage-based pricing and a dedicated account manager, arranged with sales.

Superhuman Mail

• Starter$25

  per member / month, billed annually ($30 billed monthly)

  Split Inbox, Snippets, core AI writing and summaries, calendar and booking links, and team sharing. Up to 25 seats.

• Business$33

  per member / month, billed annually ($40 billed monthly)

  Everything in Starter, plus Auto Drafts, Ask AI, the Mail MCP server, CRM integrations and Recent Opens. Up to 25 seats.

• EnterpriseCustom

  Everything in Business, plus single sign-on, SCIM provisioning, audit logs, team analytics and unlimited seats.

Jace AI

• Annual discount

  20% off with yearly billing

  Billed yearly, Plus is $20 a month instead of $25 and Pro is $40 instead of $50. The pricing page labels this as 20% off and as saving $60 a year on Plus.

Superhuman Mail

• Annual discount

  17% off with annual billing

  The pricing page shows 17% off for annual billing: Starter is $25 per member a month billed annually against $30 billed monthly, and Business is $33 against $40.