Jace
Summary
Ten minutes per email — cross-referencing attachments, scrolling Slack, pulling up calendar — is the tax most inbox tools ignore entirely. Jace AI exists to cancel that tax.
Jace connects to your inbox and immediately begins drafting replies that already account for attachment contents, prior thread history, and calendar context — drafts the vendor claims take five seconds to review rather than ten minutes to compose. Smart Rules automate the mechanical layer: CCs, template application, calendar events triggered by who you're writing to. Business integrations push further — an inbound customer email can spin up a support ticket or fire a Slack notification without you touching a second tool. The AI Chief of Staff feature lets you query your entire email history through a chat interface and trigger actions from there. The ceiling shows when you need custom branching logic that sits outside the rule builder's scope — at that point there is no API to extend it yourself.
Bottom line: Reach for Jace if your bottleneck is volume and repetition inside a single inbox; hit its limits the moment your workflow requires custom integrations or logic the rule builder cannot express and there is no API to bridge the gap.
Pricing Plans
SubscriptionLast verified 2 weeks ago- Price
- $20/month
- Free Tier
- 7-day free trial included with all paid plans
Plus Plan
Perfect for busy professionals
- 10,000 credits monthly
- Connect up to 2 inboxes with unlimited calendars
- Chat with 1 year of email history
- Drafts ready when you open your inbox
- Auto-label and organize every email effortlessly
- Standard support
Pro Plan
For teams and power users
- 20,000 credits monthly included
- Higher credit tiers available up to 2,400,000 credits monthly (pricing varies)
- Connect up to 8 inboxes with unlimited calendars
- Chat with 3 years of email history
- Custom integrations and MCPs
- Priority support
Enterprise Plan
Most powerful model for your business
- Usage-based pricing
- White-glove setup
- Dedicated Account Manager
- Advanced features for bigger teams
View full pricing on jace.ai →
Pricing may have changed since last verified. Check the official site for current plans.
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Pros
Sign in to edit- Context-aware drafting pulls in attachment analysis, calendar state, and Slack history automatically, so you skip the research step that turns a two-sentence reply into a ten-minute task.
- Smart Rules handle mechanical email hygiene — automatic CCs, template application, calendar event creation — so recurring workflow steps stop requiring your attention each time.
- AI labeling categorizes inbound messages by type and urgency before you read them, so a 100-email morning no longer requires scanning every subject line to find what actually needs a response.
- Business integrations translate inbound email directly into downstream actions — tickets created, Slack alerts fired, documents saved — so the handoff between inbox and work tools stops being a manual step.
- The AI Chief of Staff chat interface makes your email history queryable rather than just scrollable, so finding a specific data point or triggering a task does not require opening a separate search tool.
Cons
Sign in to edit- There is no public API, which means any integration or logic that falls outside Jace's native rule builder cannot be extended programmatically — teams that need custom webhook routing or tool connections not on the vendor's list have no path forward without switching tools entirely.
- Smart Rules cover common patterns, but multi-condition branching — 'if this sender AND this subject keyword AND no prior reply within 48 hours, then do X' — quickly exceeds what the rule builder accommodates; teams with complex triage logic end up maintaining a separate automation layer, at which point Jace becomes redundant for that use case.
- There is no self-hosted option, which means all email data transits Jace's infrastructure — teams operating under strict data-residency or compliance requirements cannot deploy Jace without accepting that constraint, and those teams typically move to a self-hostable alternative.
- Credit-based usage on paid tiers means high-volume months consume credits faster than budgeted; teams that spike during product launches or support incidents face consumption uncertainty rather than a flat operational cost.
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About
- Platforms
- Web
- API Available
- No
- Self-Hosted
- No
- Last Updated
- 2026-06-26T14:23:59.237Z
Best For
Who it's for
- Busy professionals managing high email volume
- Teams needing consistent email workflows and integrations
- Users wanting personalized AI drafts matching their tone
What it does well
- Drafting email replies with full context from attachments and prior conversations
- Automatically labeling and prioritizing incoming messages
- Setting rules to handle CCs, templates, and calendar events
- Creating support tickets or Slack notifications from customer emails
- Querying email history and completing tasks via chat
Integrations
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Frequently Asked Questions
- Is Jace free?
- Jace has a permanent free tier alongside paid upgrades (paid plans from $20/month). You can keep using a baseline version indefinitely without paying.
- Is Jace open source?
- No — Jace is a closed-source tool. Source code is not publicly available.
- What platforms does Jace support?
- Jace is available on: Web.
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Curated lists that include this category
Most inbox tools sort mail. Jace AI drafts it, labels it, and acts on it — the vendor describes a three-step flow: connect your inbox, let Jace index your writing style and company context, then approve outgoing drafts rather than writing them. The core loop is review-and-send rather than compose-and-send. Drafts are generated with attachments already analyzed, calendar state already checked, and relevant Slack threads already pulled in, so the context-gathering step that normally precedes writing is handled before you ever open the reply window.
The differentiating bet Jace makes is the AI Chief of Staff: a chat interface that treats your entire email history as a queryable dataset. You can ask it to surface a contract from six months ago, pull a specific figure from a thread, or trigger an action — create a doc, send a notification — without leaving the interface. This shifts email from a thing you process to a thing you query.
Jace fits professionals and teams whose bottleneck is outbound drafting volume and inbound signal extraction from a high-traffic inbox. It breaks down when the required workflow logic cannot be captured in the Smart Rules builder — multi-condition branching or integrations with tools Jace does not natively support hit a wall, and there is no public API to route around that wall. Teams that need custom integration depth or want to self-host for data-residency reasons will need a different architecture.
On the integration side, the vendor page specifically names Slack notifications and ticket creation as automated triggers from inbound email. Setup is described as instant upon OAuth connection; no training period is required because the system indexes existing email to calibrate to your tone before you send the first draft.