Short answer: Many can, but the details differ. Check four things: how many inboxes a plan allows, whether a second inbox costs extra, whether each inbox keeps its own settings, and which kinds of mailbox can connect. In Jace, you add a second Gmail or Outlook inbox under your own login. Per the Jace docs, "The new inbox joins your existing subscription at no extra charge."
We make Jace, so read the Jace parts as ours. This page was checked on 14 November 2026 against the live Jace site and docs. It does not rate other assistants. Their limits change, so read each vendor's own pricing page before you pay.
Why this question comes up
Few people have one inbox. A founder keeps a company address and a personal one. A consultant can have an address at each client. A lawyer can keep firm mail apart from a side role. Each of them wants one assistant, not three.
The trouble shows up later. A tool can look fine on a single inbox and then charge per mailbox, mix settings across accounts, or refuse the mailbox you care about most.
Four things to check before you buy
1. The inbox limit per plan. Some tools count inboxes, some count seats, and some count both. Find the number on the pricing page, not in a sales chat.
2. What a second inbox costs. Adding an inbox and adding a person can be billed differently. Ask which one you are buying.
3. Whether settings stay separate. Work mail and personal mail need different rules. Check that labels and drafting settings apply per inbox.
4. Which mailboxes connect. Shared mailboxes, delegated access and send-as aliases can behave differently from a mailbox with its own sign-in.
How Jace handles more than one inbox
Adding an inbox. Open the account menu at the bottom of the sidebar, click Add another account, then sign in with Google or Microsoft (docs). Jace works with Gmail and Outlook.
Limits. The pricing page says: "Plus connects up to 2 email inboxes per user and Pro up to 8, with unlimited calendars on both." When you reach the limit on Plus, the account menu shows "Upgrade to Pro for up to 8 accounts" in place of the add button. On Pro it shows "Need more? Talk to Sales!"
Cost. An added inbox is included in your plan. Inviting a teammate is different: it adds a paid seat. The docs put it plainly: "A connected inbox and a team seat are not the same." Before an invite goes out, Jace asks you to confirm with Invite & add seat. If you only wanted a second mailbox for yourself, cancel that dialog and use Add another account.
Credits. All your inboxes share one credit allowance. The pricing page notes that "auto-drafting on a busy inbox uses credits faster." Your balance and usage show in Settings → Billing & Usage.
Separate settings. Per the docs, "Each connected inbox has its own labels and settings, so auto-drafts run separately in each one." Settings you change, such as labels or Autodraft only when directly addressed, apply to the inbox you are in.
Switching. Open the account menu in the sidebar and pick the inbox you want.
Removing one. Switch into that inbox, go to Settings → Account and click Disconnect. The docs say this "removes that inbox and its contents from Jace and leaves your other inboxes and your subscription as they are."
Where Jace has limits
Jace connects mailboxes that have their own sign-in. Per the docs, delegated or shared mailboxes you open through someone else's Outlook account, and send-as aliases, "don't connect as separate inboxes." If a shared address has its own password, you can add it like any other inbox.
Plus stops at two inboxes per user. If you run five client addresses, you need Pro or a talk with sales. Busy inboxes also draw on the same credit pool, so one noisy account can use credits meant for the others.
Inboxes or seats: a quick rule
Use Add another account when the same person reads every inbox. Use Invite members when a second person needs their own login. The team setup guide covers how seats and invites work.
A simple way to test it
Connect your main inbox first and let Jace draft for a few days. Then add the second inbox and set its labels on their own. Watch your credit balance for a week before you add a third. You can start a trial and connect your inboxes to see how the limits fit your mail.
FAQ
Does adding a second inbox to Jace cost extra? No. Per the Jace docs, a new inbox joins your existing subscription at no extra charge. Inviting a teammate adds a paid seat.
How many email accounts can I connect to Jace? Up to 2 per user on Plus and up to 8 per user on Pro, with unlimited calendars on both, per the pricing page.
Do my inboxes share settings? No. Each connected inbox has its own labels and settings, and auto-drafts run separately in each one.
Can I connect a shared mailbox or an alias? A shared address with its own password connects like any other inbox. Delegated mailboxes opened through someone else's Outlook account, and send-as aliases, do not connect as separate inboxes.
Do all my inboxes use the same credits? Yes. Every inbox you add shares your credit allowance, so auto-drafting on a busy inbox uses credits faster.
What happens when I disconnect one inbox? That inbox and its contents are removed from Jace. Your other inboxes and your subscription stay as they are.
Sources
- Jace docs: Add another email account, checked 14 November 2026
- Jace pricing, checked 14 November 2026
- Jace docs: Setting up your team, checked 14 November 2026
