Inbox

Secure Internal Mail for Your Team

Internal communication that stays organized, searchable, and connected to the work — not buried in email. Secure, spam-free, and built for teams.

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Features

Everything your team needs for internal mail

Central Communication Hub

A central hub for all team communications in a single easy-to-navigate platform.

End-to-End Encryption

End-to-end encryption on all messages and shared documents for complete security.

Spam-Free Environment

No distractions from spam or ads. A clean, focused messaging experience for your team.

Organized Conversations

Keep internal mail organized with folders, labels, and smart filtering.

Features

Everything Inbox can do

Secure internal messaging
End-to-end encryption
Spam-free environment
No ads or distractions
Compose and send messages
Rich text formatting
File and document attachments
Image attachments
Message threading
Conversation organization
Folder management
Labels and tags
Message search
Read and delivery receipts
Priority flagging
Draft messages
Message forwarding
Bulk message actions
Contact autocomplete
Distribution lists
Out-of-office auto-replies
Message archiving
Trash and recovery
Notification preferences
Desktop and mobile notifications
Cross-device sync
Keyboard shortcuts
Admin controls
Storage management
Connected to Contacts, Tasks, and Docs

Business in a Box Inbox

Part of Your Business Operating System

Inbox is part of your business operating system. Internal mail stays connected to your tasks, documents, and team workflows — so nothing slips through the cracks.

250K+Businesses worldwide
4.6★Average rating across review sites
190+Countries served

"Our team finally stopped using personal Gmail for internal updates. Inbox gives us a clean, encrypted channel that keeps sensitive discussions inside the business."

Natalie BurgessCEO, Clearfield Advisory

"The read receipts and priority flagging changed how we handle urgent communications. Nothing important gets buried in a busy thread anymore."

Thomas WhitmoreHead of HR

"Switching from a cluttered shared mailbox to Inbox cut our response time in half. The folder system and labels make it easy to stay on top of every conversation."

Angela OseiTeam Lead, Northgate Retail

Questions

Frequently Asked Questions

Inbox is the internal messaging center for your business — combining notifications, announcements, approvals, and internal communication in one place.
Inbox is for internal team communication only. It is connected to tasks, projects, and approvals, so every message has context and action attached.
Yes. Customize which events trigger notifications, who receives them, and how they are delivered (in-app, email, or mobile push).
Yes. Inbox includes approval workflows for time off, expense claims, purchase orders, and any custom approval process you need.
Yes. The Inbox app is available on iOS and Android with push notifications, so you never miss an important message.

Works better together

Apps that pair with Inbox

Every app in Business in a Box shares one workspace, one login, and one data layer with Inbox — explore what connects.

ChatConnected to Inbox inside the Business OS.Open Chat ConnectConnected to Inbox inside the Business OS.Open Connect ContactsConnected to Inbox inside the Business OS.Open Contacts

See all 16 business apps →

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Keep your internal communication secure and organized

Start your free account today. No credit card required.

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