Best Shared Inbox for WhatsApp: What to Look For

If your team answers customers on WhatsApp, a shared inbox is the tool that stops chats getting lost, duplicated or stranded on one person's phone. The hard part is choosing one. There are dozens of options, and their pricing pages all promise the same things.

Instead of ranking tools, this guide gives you an 8-point checklist to judge any of them, along with the questions to ask on a demo call and the red flags to watch for.

Transparency note: this guide is published by RelayThrough, a WhatsApp shared inbox, so we have a stake. We wrote it as a checklist you can use on any tool, including ours.

The short answer

The best shared inbox for WhatsApp is one that:

1. Connects through the official WhatsApp Business API, not a QR-code workaround
2. Lets you keep your existing number
3. Gives every person their own login, assigned chats and internal notes
4. Has pricing you can predict before you sign

For most small and mid-sized teams, everything else is secondary. The sections below explain each point and what else to check.

What a shared inbox does

A shared inbox puts all your WhatsApp conversations in one place that the whole team can open at once. Each person logs in separately, so nobody needs to pass a phone around. A good one also records who said what and when.

If you're still deciding whether you need one, see our guides on stopping missed messages and sharing one number across a team.

The 8-point checklist

1. Is it connected through the official WhatsApp Business API?

This is the most important question. Some tools skip Meta's official route. They link your account the way WhatsApp Web does, by scanning a QR code, and start sending straight away.

The trouble is that these tools sit outside WhatsApp's rules. Even a provider that sells an unofficial WhatsApp API says plainly that unofficial automation is against WhatsApp's terms, that the number can be restricted or banned, and that businesses who can't afford a ban should use the official API instead. Another comparison notes that unofficial tools can never get the green tick verification badge.

For a shared inbox that your customer conversations depend on, don't take that risk. Ask: "Do you connect through Meta's official WhatsApp Business API, and are you an approved provider?"

2. Can you keep your existing number?

Customers already know your number, and changing it means losing contacts. Check how the provider connects an existing number and what happens to your chat history. Some setups let the app and the API run on the same number, but the details vary by provider and plan, so ask for specifics instead of assuming.

Ask: "Can I keep my number? What happens to my current chats, and can I still use the WhatsApp Business app on my phone?"

3. Does it have the team features you'll actually use?

Look for the basics, in this order of importance:

• Individual logins for every team member
• Chat assignment, so every conversation has an owner
• Internal notes that customers never see
• Task tracking for follow-ups and handovers
• Quick replies or saved templates for common questions

Advanced features such as auto-routing, round-robin distribution and chatbots are useful at a larger scale. For a team of five, a clean manual assignment screen often matters more than an elaborate rules engine.

4. Does it give you a searchable history and a record?

A shared inbox should keep every conversation in one searchable place, so a new hire can see what was promised before they joined. For clinics, financial services and other regulated teams, a timestamped record of who replied is often the main reason to switch.

Ask: "Can I search old conversations? Can I export them? Is there an audit trail of who sent each message?"

5. Is the pricing predictable?

Pricing is where shared inboxes differ most. Compare the total monthly cost, not the headline number. Check:

• Seat limits and per-seat fees. Do you pay more as the team grows?
• Platform fee versus Meta's message charges. Meta charges separately for template messages, whichever provider you use, so ask how the provider bills them.
• Setup or onboarding fees.
• Contract length and what it costs to leave.
• What's gated behind higher plans. Notes, history and reporting should not be paywalled traps.

Ask: "Give me an example monthly bill for a team of [N] people sending about [N] template messages."

6. How hard is setup, and who helps?

Some providers need a developer. Others connect in a call. Find out how long it takes to go live and who does the work. Also check what support looks like after launch: live chat, email, or only a help centre.

Ask: "Who handles setup? How long does it take, and what support do I get afterwards?"

7. Does it handle outbound messages properly, if you need them?

If you only reply to customers who message you first, you can skip this. But if you plan to send reminders, follow-ups or campaigns outside the customer service window, you can only send pre-approved template messages. Check that the tool can create and submit templates, respects opt-in and gives you a clear view of delivery.

Ask: "How do I create and submit message templates, and how do you handle opt-in?"

8. Security, permissions and exit

Look for role-based permissions (so an intern doesn't see everything), data protection details, and, often forgotten, how to leave. Can you export your conversations and contacts if you change tools?

Ask: "Where is data stored? What can each role see? How do I export everything if I leave?"

Three types of tools you'll come across

Which is best depends on how many channels you support and how big your team is.

Red flags

• "Live in 2 minutes, just scan a QR code." That's the unofficial route described above.
• No clear pricing, or a price that changes on a sales call.
• Per-seat fees that punish growth, with no cap.
• Notes, history or export hidden behind the top plan.
• No answer to "are you an official provider?"
• A demo that only shows chatbots when you asked about teamwork.

A simple scorecard

Copy this into a spreadsheet and score each tool from 0 to 2 per row (0 = no, 1 = partly, 2 = yes):

A tool that fails a must-have shouldn't make your shortlist, however low the price.

Where RelayThrough fits

RelayThrough is a WhatsApp-first shared inbox. It connects your existing WhatsApp Business number through the official WhatsApp Business API, so customers keep messaging the same number and notice no change. Your team gets individual logins, assigned conversations, private internal notes, task tracking and full conversation history. Plans start from $49.99 a month for up to 10 team members.

We've tried to write this checklist fairly, so run RelayThrough through it like any other tool.

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