What is Jace?
Jace is an AI email assistant that drafts replies in your voice and keeps your inbox organised. Its maker, Zeta AI, Inc., describes it as an AI executive assistant.
It works by connecting to your email account and calendar. Jace reads incoming messages, labels them by priority and prepares draft replies, so they are waiting when you open your inbox. You review, edit and send. A chat panel answers questions about your email history.
Key Features
Jace’s key features are email drafts written in your voice before you open the inbox, AI labels, rules for recurring messages, scheduling help, a chat over your email history and business tool integrations.
- Drafts in your voice: Prepares replies before you open the inbox, written in your style. Jace says drafts draw context from attachments, your calendar and Slack, not only the email itself.
- AI labels: Sorts every email by type and priority. The site gives examples such as urgent client, partnership and internal updates, so important threads stand out.
- Smart rules: Follows instructions you set for certain messages. Rules can handle CCs, apply templates and trigger actions based on the recipient.
- Scheduling: Proposes meeting times and manages calendar invites from the email thread. Paid plans connect unlimited calendars.
- Chat with your inbox: Answers questions about past email in a chat panel. Plus covers one year of history and Pro covers three years.
- Business integrations: Creates tickets, sends Slack notifications and saves documents automatically. The Pro plan adds custom integrations and MCPs for other business tools.
- Multiple inboxes: Connects up to two inboxes on Plus and up to eight on Pro, which suits people who manage separate work, client or personal accounts.
Pros
Jace’s main advantages are finished drafts that cut writing time, a review step that keeps you in control, support for several inboxes and published security commitments, with a trial and refund window.
- Saves writing time: Most replies start as a finished draft. Jace claims this cuts handling to about five seconds per email from ten minutes, a figure that is the company’s own.
- You stay in control: Drafts wait for your review, so you read, edit and send each reply yourself. That keeps a human check on every message.
- Several inboxes: Plus connects two inboxes and Pro connects eight, each with unlimited calendars, so one subscription can cover several email accounts.
- Stated safeguards: Jace says it is SOC 2 Type 1 certified, meets CASA Tier 3, encrypts data in transit and at rest and never trains AI models on your data.
- Low-risk test: Both paid plans include a 7-day free trial that you can cancel at any time, and the pricing page also lists a 30-day money-back guarantee.
- Annual discount: Yearly billing cuts the price by 20%, which brings Plus from $25 to $20 a month and Pro from $50 to $40 a month.
Cons
Jace’s main drawbacks are that it has no free plan, usage is capped by monthly credits, it needs broad access to your inbox and its official pages do not name the supported email providers.
- No free plan: Jace offers only a 7-day trial. After that the cheapest option is Plus at $20 a month on annual billing, or $25 paid monthly.
- Credit allowance: Plus includes 10,000 credits a month and Pro 20,000, and monthly credits reset at the start of each billing period. Heavy users may need a higher tier.
- Broad inbox access: Jace must read your email and calendar to draft and label, so check your employer’s policy before connecting a work account.
- Providers not named: The official pages we fetched do not list supported email services. A third-party review says Gmail and Outlook, so confirm your account type during the trial.
- Built for individuals: One reviewer notes there is no shared inbox layer, so teams that answer from a common address may need a different tool.
- Pro doubles the price: Custom integrations, MCPs and three years of history require Pro at $40 a month on annual billing. Enterprise pricing is usage-based and not published.
Who is Using Jace?
- Founders and executives: Clear a high volume of daily email.
- Sales and account managers: Reply quickly to clients.
- Consultants and freelancers: Manage several inboxes.
- Busy professionals: Cut time spent on scheduling.
Pricing
Jace has no free plan. Paid plans start at $20 per month on annual billing, with a 7-day free trial (official prices, October 2026).
| Plan | Price | What you get |
|---|---|---|
| Plus | $20 / month billed annually, or $25 monthly | 10,000 credits a month, 2 inboxes, 1 year of email history |
| Pro | $40 / month billed annually, or $50 monthly | 20,000 credits a month, 8 inboxes, 3 years of history, custom integrations |
| Enterprise | Custom | White-glove setup and a dedicated account manager |
Disclaimer: Pricing can change. Check the official Jace website.
What Makes Jace Unique?
Jace stands out for doing the work before you ask. Many email tools add a writing button, while Jace prepares drafts and labels in the background, so opening your inbox becomes a review task.
Compatibilities and Integrations
- Platform: Web app.
- Email: Gmail and Outlook, according to a third-party review.
- Calendars: Unlimited calendars on paid plans.
- Other tools: Slack, plus custom integrations and MCPs on Pro.
Jace Tutorials
You can learn how to use Jace in under an hour:
- Start the 7-day trial and connect your inbox.
- Let it label your email and prepare drafts.
- Edit the drafts so it learns your style.
- Add custom rules for the messages you receive most often.
How We Rated It
| Criterion | Score | Why |
|---|---|---|
| Accuracy and Reliability | 4.2/5 | Drafts need a quick check |
| Ease of Use | 4.5/5 | Drafts waiting in the inbox |
| Functionality and Features | 4.4/5 | Drafts, labels, rules, chat |
| Performance and Speed | 4.3/5 | Works in the background |
| Customization and Flexibility | 4.2/5 | Custom rules and MCPs |
| Data Privacy and Security | 4.3/5 | SOC 2 Type 1, CASA Tier 3 |
| Support and Resources | 4.0/5 | Priority support on Pro |
| Cost-Efficiency | 3.8/5 | No free plan |
| Integration Capabilities | 4.1/5 | Calendar, Slack, MCPs |
| Overall Score | 4.2/5 | Average of the nine criteria |
Summary
Jace suits people who spend hours a day on email and are happy to pay for drafts that are ready to send. There is no free plan, so use the trial to judge draft quality. Read every draft before sending, and review the access you grant.
Reviews
Write a Review