What Is Jace AI? Features, Credits, and Pricing
Jace AI is an email assistant that reads your inbox, writes replies in your voice, and keeps things labelled and organized so you open your mail to work already half done. You connect a mailbox, it learns from how you’ve written before, and drafts are waiting for you rather than the other way round.
The thing to understand before you buy is that Jace is a drafting assistant, and its pricing runs on credits, not a flat seat fee. Both facts shape whether it fits.
What Jace does
Connect Gmail and Jace works on three things:
- Drafts. Replies are written and waiting when you open your inbox, matched to your own writing style rather than a generic assistant voice.
- Organization. It auto-labels and sorts incoming mail so the inbox arrives pre-sorted.
- Email history as context. You can chat with your archive and ask questions across it. How far back depends on your plan: one year on Plus, three years on Pro.
On Pro it also handles custom integrations and MCP connections, which is the piece that lets it reach beyond mail if you’re willing to wire it up.
The credit model
Jace meters usage in credits, and this is the part that catches people out. Verified on the Jace pricing page on July 30, 2026:
| Plan | Monthly | Billed yearly | Credits/mo | Inboxes | Email history |
|---|---|---|---|---|---|
| Plus | $25 | $20 | 10,000 | up to 2 | 1 year |
| Pro | $50 | $40 | 20,000 | up to 8 | 3 years |
| Enterprise | Contact | Contact | Usage-based | Custom | Custom |
Every plan includes unlimited calendars, and there’s a 7-day free trial on both paid tiers. Above Pro, higher credit tiers run up to 2,400,000 credits per month at pricing that varies, and Enterprise is quoted with white-glove setup.
Two implications worth sitting with. First, the headline price is a floor, not a ceiling: heavy months cost more, and the gap between 20,000 credits and 2.4 million is where the real money is. Second, the inbox limit is a hard cap on the cheap plan. If you run three mailboxes, Plus doesn’t cover you and you’re on Pro whether or not you need the rest of it.
Where Jace stops
Jace drafts. You send.
That’s the design, not a bug, and for plenty of people it’s the right call. But it means the last step stays with you on every single thread. If your problem is that writing replies is slow, Jace solves it. If your problem is that you’re the bottleneck on three hundred messages a week, a queue of excellent drafts is still a queue with your name on it.
The second limit is reach. Jace is built around the inbox. Anything that lives past the reply, updating the CRM record, booking the thing you just agreed to, chasing the person who never answered, is either a custom integration you build on Pro or it isn’t happening.
If the part you want gone is the sending and the follow-through rather than the typing, that’s a different tool. Carly gives each agent its own email address so it replies to people directly, works across Gmail and full Outlook / Microsoft 365, and reaches 200+ native integrations plus bring-your-own-key for anything else with a public API. Non-AI workflow steps aren’t metered, so testing doesn’t burn budget. AI agents from $35/month.
Who Jace suits
It’s a good fit if you’re a Gmail user drowning in composition rather than decisions, you want your own voice preserved, and one or two mailboxes covers you. At $20/month on the annual Plus plan it’s inexpensive for what it does, and the three-year history search on Pro is genuinely useful if your archive is your institutional memory.
It’s a poor fit on Outlook or Microsoft 365, since Jace is built for Gmail. It’s also awkward if your volume is spiky, because credits reward predictable usage and punish the month everything happens at once. And if you were hoping to hand over whole processes rather than individual replies, the drafting model will frustrate you.
For the wider field, see Jace AI alternatives or the head-to-head with Jace vs alfred_.
FAQ
What is Jace AI?
An AI email assistant for Gmail. It drafts replies in your writing style, auto-labels and organizes incoming mail, and lets you search and chat with your email history.
How much does Jace AI cost?
Plus is $25/month, or $20/month billed yearly, with 10,000 credits and up to two inboxes. Pro is $50/month, or $40/month billed yearly, with 20,000 credits and up to eight inboxes. Both include a 7-day free trial. Enterprise is usage-based on request.
What are Jace credits?
Jace’s usage unit. Plans include a monthly allowance (10,000 on Plus, 20,000 on Pro) and higher tiers scale up to 2,400,000 credits per month at prices that vary. The listed plan price is your starting point, not your maximum.
Does Jace AI work with Outlook?
Jace is built around Gmail. If you’re on Outlook or Microsoft 365, check current support with Jace directly before committing.
Does Jace send email on its own?
No. Jace prepares drafts and you send them. Every reply passes through you, which is deliberate but does mean you remain the final step on every thread.
How many inboxes can I connect to Jace?
Up to two on Plus and up to eight on Pro, with unlimited calendars on both. Enterprise is custom.
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