WhatsApp inbox features worth a second look in Avox

It's ten to five, a customer wrote to you yesterday afternoon, and you finally have an answer. You open the chat, type it out, and the reply box is greyed out. Nothing is broken. The conversation simply passed a line you couldn't see.

That small moment is why we put a countdown in the chat header. It's also a good example of what this post is about: WhatsApp inbox features that don't make a headline, but that you notice within a week of using the inbox every day. We went back through the inbox and contacts pages, checked each detail below against the product, and picked the seven we'd point a new teammate to first.

Seven WhatsApp inbox features, one at a time

1. The reply window, counted down for you

WhatsApp lets a business send a free-form message only while a 24-hour customer service window is open, and each new message from the customer resets it. Meta's own page on sending messages puts it plainly: when the window closes, you can only send pre-approved templates (Meta's guide, as of October 2026). Check that page for the current rules, because Meta has been changing the pricing around it.

In Avox, the chat header shows the time left, for example "Reply window: 5h 12m left". When fewer than two hours remain, the text turns amber. When it reaches zero it reads "Reply window closed", the reply box turns off, and an amber note above it tells you to send a template to reopen the conversation.

Two details we like here. Avox checks the window again on the server before every send, so a tab you left open overnight can't quietly send something WhatsApp would refuse. And only the customer's own messages open the window: replies from your team, from an automation or from the WhatsApp Business app on someone's phone don't extend it.

2. Their local time, next to their name

Under the contact's name, the header shows their flag and a line like "3:42 PM their time", worked out from the country of their number. Where a country spans several time zones the line says "About" first, rather than pretending to know.

It's a tiny thing, and it stops a very specific mistake: sending a long "just checking in" at what turns out to be three in the morning for them.

3. Ticks that explain themselves

Replies sent from the inbox or by an automation show WhatsApp-style ticks, and you can hover or focus one to read what it means:

• Clock: waiting for WhatsApp to accept it.
• One grey tick: WhatsApp accepted it, but it isn't on their phone yet.
• Two grey ticks: delivered, not read.
• Two blue ticks: read.
• Red mark: WhatsApp couldn't deliver it.

The ticks update on their own every few seconds while the conversation is open and the tab is visible. A related touch: bubbles also say where a message came from. A message your team typed on the Business app is labelled "Sent from phone", and one that came through the Avox API is labelled "Sent via API". When two colleagues disagree about who answered a customer, the thread settles it.

4. Tags and categories you can make on the spot

Tags and categories help your team find people, and customers never see them. The difference is simple. A category says what kind of customer someone is (Lead, Customer, Supplier) and shows as a filled, rounded label with a folder icon. A tag is anything else worth remembering, like "follow-up", shown as a pill with a dot and a tag icon.

In an open conversation, click Add category or Add tag. If the name you type doesn't exist yet, you're offered Create tag or Create category right there, with a colour to pick. No detour to a settings page.

The numbers behind it are generous but real: names up to 40 characters, up to 500 tags and 500 categories per Switchboard, and up to 50 on one contact. Colours come from a palette of 11, or you can type your own hex code, and the text colour adjusts so a pale custom colour stays readable. In the contacts list you can tick up to 200 contacts and add or remove tags in one go.

5. Avatars that change with the relationship

Every contact gets a generated avatar, and it's the same one everywhere: the inbox, contacts, calls. Its colour follows the contact's first category, and a category can even set the avatar's shape, with ten to choose from, so your VIPs can be hexagons if you like.

Its face follows the activity. A brand-new contact (first seen in the last 24 hours) looks surprised. One whose message is the latest, and who is waiting on you, looks thoughtful. One who wrote in the last day and got a reply looks happy. And a contact with no messages either way for 30 days goes sleepy.

Blobatar's note: "Thinking means you owe them a reply. I'm only the messenger."

It's a mascot detail, but it works as a triage view. Scan the list for the thoughtful faces first.

6. Search that understands phone numbers

In the inbox, one search box covers conversations, tags and categories: type "vip" or "refund" and the list narrows to contacts whose name, latest message or labels match.

On the contacts page the search has two modes. Type part of a name ("mar" finds Maria and Omar) or type a full phone number with its country code. Spaces, dashes, brackets and a leading plus are ignored, so +1 (555) 123-4567 and 15551234567 find the same person. Anything with six or more digits is treated as a number.

There's a reason you can't search by the last four digits: customer numbers are encrypted before they're stored, and Avox looks a number up as a whole rather than reading through stored numbers. People without the See full phone numbers permission see only the last four digits, like •••• 4821. We think that trade-off is the right one for other people's phone numbers, even though it costs you partial-number searching.

A shortcut worth knowing: the page address accepts a search, so /contacts?q=maria is a link you can bookmark or send to a colleague.

7. Flow answers that arrive as a card

When a customer finishes a WhatsApp Flow, the answers appear in the conversation as a card headed "Submitted" plus the Flow's name. It lists the first five answers, with Show all for the rest, and an Open Flow link for people who can view Flows. Photos from customers show in the thread too, and videos, voice notes and documents show as tiles you can open.

One thing to know about reading

Opening a conversation marks the customer's unread messages as read on WhatsApp, so they see blue ticks, exactly as if you'd opened the chat on your phone. Avox does it for up to the 20 most recent unread messages. If you only want to peek, you can't. That's the honest cost of a shared inbox that behaves like the real app.

Questions people ask

Can customers see my tags and categories?

No. They exist for your team only, in the inbox, contacts and profiles.

Why is the reply box disabled on an old conversation?

Because the 24-hour window has closed. Send an approved template to start the conversation again, and once the customer replies the window reopens. Meta's page, linked above, has the current rules.

Who can add tags and change contact names?

By default both Admins and Managers can. An Admin can change that per person in Settings > Switchboard > Members > Permissions. The Contacts guide lists each permission.

Is there a list of all the details?

The Inbox guide walks through every part of the screen. For working habits around them, see our post on running a shared inbox as a team, and for private notes see contact profiles and notes.

Try one this week

Open a conversation, click Add category, and create one called "Waiting on us". Then scan the list for it tomorrow morning. That one habit is a better test of the inbox than any feature list.