Yes. You can connect as many inboxes as you'd like to you Uptics Account!
Inboxes are a community pool for your account and there is technically no limit as our plans have tiers for the number of connected inboxes. You can also read more about our Connected Inboxes subscription plan tier here.
On our website, or from inside the app on your Plan & Billing page, you can adjust the inbox threshold to see what the total price is for the subscription you're looking for.