How do I handle WhatsApp, Gmail and Messenger customer chats without juggling browser tabs?

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For a small business, customer conversations rarely live in one place from the start. Some customers message on WhatsApp, some email, some use Messenger because that's how they found you on social media. Handling all three well usually means keeping all three open constantly, somewhere, which in practice means a cluster of browser tabs you're mentally tracking and manually checking.

What Singlebox actually does

Confirmed directly on WebCatalog's own Singlebox page: it's a sidebar, not a browser tab setup, that holds WhatsApp, Gmail, Messenger and other apps (Slack, Microsoft Teams, Telegram, Discord and Notion are also named) side by side, each with its own separate account signed in, a badge showing unread messages, keyboard shortcuts to jump between them, and the ability to mute specific apps when you want quiet. It also includes built-in ad and tracker blocking, and a password or Touch ID lock if you want to step away from your computer without leaving customer conversations visibly open.

It's confirmed free to download and use, for both Mac and Windows.

Step by step: how to set this up for customer messaging

1. Install Singlebox from WebCatalog's Singlebox page on whichever computer handles customer messages.
2. Add each channel you actually use for customers: WhatsApp, Gmail (or whichever inbox you use), Messenger, and anything else customers actually message you through. Resist adding channels nobody uses for customers, since the whole point is reducing clutter, not relocating it.
3. Arrange them in the order you check most often, with keyboard shortcuts for the ones you jump to constantly.
4. Set unread badges and leave them visible, so a glance at the sidebar tells you immediately whether anything needs a reply, rather than clicking into each one to check.
5. Mute anything that genuinely doesn't need real-time attention (a channel that's mostly internal notices rather than customer messages, for instance), so the badges that do show up are ones that actually matter.
6. Set the password or Touch ID lock if the computer is ever unattended in a space customers or other staff can see, since customer conversations staying visibly open on an unlocked screen is a real, avoidable risk.

A realistic example: a solo tradesperson handling their own messages

Picture a solo electrician or plumber who gets quote requests over WhatsApp, booking confirmations over email, and the occasional inquiry through Messenger from their business page. Right now, that's three separate apps or tabs, checked at different times, with no single glance that confirms nothing's been missed. With Singlebox running all three in one sidebar with badges, a single glance between jobs tells them exactly what's waiting, without opening and checking three different things separately. For one person covering every channel themselves, this is close to the ideal setup: free, simple, and genuinely reduces the mental overhead of remembering to check each place.

The honest limit: no team assignment or reply tracking

This is the part worth being completely upfront about, since it's exactly where Singlebox stops being the right tool. WebCatalog's own page states plainly that it has no team assignment or reply tracking. That means once more than one person is handling the same customer messages, Singlebox has no way to show who's already replied, who's claimed a conversation, or route a message to the right person. Two staff members both looking at the same WhatsApp account through Singlebox could both reply to the same customer, or both assume the other handled it, with nothing in the tool itself preventing either.

A genuine shared-inbox tool built for customer support (the kind that assigns conversations, tracks who replied, and shows status) solves exactly this problem, at a real cost, because that coordination layer is actual, non-trivial software. Singlebox is free because it's solving a different, narrower problem: one person wanting several of their own channels visible in one place, not a team coordinating replies across shared accounts.

The clearest sign you've outgrown it: the first time two people reply to the same customer within minutes of each other without realizing it, or a message sits unanswered for a day because each person assumed the other one saw it. Neither failure shows up as an error in Singlebox itself, since from its perspective nothing went wrong, the messages were visible to whoever opened the app. That's exactly the kind of silent gap a dedicated shared inbox is built to close, by making "who's handling this" a visible, trackable fact rather than an assumption everyone's quietly making on their own.

When Singlebox is right, and when it's not

Situation	Right fit?
One person handling all customer channels themselves	Yes, this is exactly what it's built for
A small team, but each person owns a different, separate channel	Workable, since there's no overlap needing coordination
Multiple people sharing the same WhatsApp, email or Messenger account for customers	No, use a real shared-inbox tool with assignment and reply tracking instead

A worked example: a solo tradesperson covering everything alone

A one-person electrical or plumbing business fielding customer messages across WhatsApp, a booking-site chat, and email, often between jobs, is the clearest case where Singlebox's simplicity is exactly the right amount of tool. There's no team to coordinate, so the missing assignment and reply-tracking features that would matter for a support team simply don't apply. The whole value here is purely about reducing the friction of checking several channels between jobs, catching a new request within minutes rather than hours because everything's sitting in one glanceable sidebar instead of scattered across apps that each need their own check-in.

Setting up the badges so they actually help, not just add noise

The badge system only earns its keep if you're deliberate about which channels get one. Leaving every single connected app showing an unread count means the sidebar turns into the same kind of visual clutter you were trying to escape, just compressed into one column instead of several browser tabs. A better approach: badges stay on for anything a customer might actually be waiting on a reply to (WhatsApp, the inbox you quote jobs from, Messenger), and get muted for anything that's mostly internal or low-urgency, a Notion workspace you check once a day, a Discord server that's more social than operational. The point of the whole setup is a glance that tells you something true; a sidebar with ten badges lit up all the time stops meaning anything, the same way an inbox with 4,000 unread emails stops being useful as a signal. If alerts need to reach you with the browser shut, see getting notifications when the browser is closed.

Singlebox vs. just tightening your notification settings

Before installing anything, it's worth asking whether the real problem is tab-juggling or just noisy notifications. Some of the friction people describe here actually comes from phone notifications firing for every app at once, not from where the conversation lives on a computer. If that's the actual complaint, tightening notification settings per app solves it without adding a new tool at all. Singlebox earns its place specifically when the problem is checking several separate apps or browser tabs to see what's waiting, not just notification volume; if you're already getting notified reliably and just want one glanceable place to act on them, that's exactly the gap it closes. For after-hours quiet, see stopping work chat alerts after 6pm.

How I'd approach this

For a solo operator or very small business, Singlebox genuinely solves the browser-tab-juggling problem for free, and I'd set it up without hesitation at that scale. The moment a second or third person starts replying to the same customer accounts, that's my cue to point you toward a proper shared-inbox or lightweight CRM setup instead, since that's a coordination problem Singlebox was never built to solve, and pretending otherwise just sets a growing team up for crossed wires with customers. For businesses running one account per branch, see managing a separate WhatsApp per branch.