Muted Zalo groups: why businesses miss real connections, and how purposeful networking fixes it

Short answer: in large Zalo groups, the common reflex is to hit "Mute" to keep the noise down — and that is a sensible choice. The cost is that when a genuine partnership offer, or a customer looking for exactly what you sell, appears in that group, you never find out. The problem is not Zalo; it is using a mass group chat as a business-connection channel. The fix is purposeful networking: matching businesses on a specific need, with a coordinator in the middle, so every introduction that reaches you is worth opening.

Last updated: 31/10/2026.

Quick summary for the time-poor

The five main points, each sourced in the body of the article:

• Muting a group is a behaviour Zalo itself supports and Vietnamese media recommends. It buys you quiet, but it also means important messages sit unseen until you open the group yourself.
• Research describes this as a dilemma. Without notifications people focus better, but feel unable to respond as fast as others expect and less connected to their group.
• Important notifications are still experienced as noise when they arrive mixed in with dozens of others.
• Vietnam's business population is overwhelmingly micro and small firms with few dedicated business-development staff, which makes them the most likely to lose opportunities in a muted chat.
• The answer is not to abandon Zalo but to separate channels: mass groups for general updates, and business connections through a needs-based matching process with a coordinator.

Key facts — one verifiable source per line:

• VNG said Zalo had 79.2 million monthly active users in Q3 2025, with users sending about 2.1 billion messages a day — company figures reported by Tuoi Tre News on 29/12/2025 (we have not traced VNG's original filing).
• A standard Zalo group holds up to 100 members; upgraded to a Community it holds up to 1,000 (Zalo Help, Vietnamese); each user may create and join up to 1,000 groups (Zalo Help, Vietnamese).
• In a field study, participants dealt with 63.5 notifications per day on average, mostly from messengers and email (Pielot, Church & de Oliveira, MobileHCI 2014).
• 75% of respondents in a US survey of 1,005 people had muted an annoying group message thread (Secure Data Recovery, 2023) — not a measurement of Zalo users.
• Vietnam had 859,048 enterprises actively operating and generating business results at the end of 2025, according to preliminary results of the 2026 Economic Census (VietnamPlus, 14/07/2026).

What happens when the whole group mutes

Direct answer: when most members mute a group, the chat is still "alive" but nobody is really listening. Messages keep arriving and the member count stays high, yet a genuine partnership request can sit there for days without a reply, because nobody was told it exists.

Picture a familiar scenario. After a business seminar you are added to a "Business connections" group. In the first week it is lively: greetings, business cards, event photos. By the second week, promotional posts outnumber conversations. By the third week your phone buzzes through every meeting, and you do what a great many people do: long-press the group and choose "Mute". This is a widespread observation among business owners, not a measured statistic — we have found no public survey that measures how many Zalo users mute their groups.

Notably, Zalo designed the feature for exactly this situation. Its official help page, in Vietnamese, tells users that instead of leaving a group to stop its notifications, they can use the mute-group feature, with an option to choose how long to mute it for (Zalo Help: mute group notifications). The press gives the same advice: a VnExpress piece on group-chat etiquette tells readers that if a group is too noisy, they should not hesitate to mute it. In other words, muting is an accepted, even encouraged, behaviour.

A behaviour that is rational for each individual becomes a problem for the group as a whole. When ten members mute, the group is fine. When ninety mute, it becomes a notice board nobody stands in front of. Someone posting a real need — "we need a firm to prepare our greenhouse-gas inventory before March", "we are looking for a paper-packaging supplier for an export order" — gets silence, and concludes that nobody in the group can help. Meanwhile the right partner may well be a member, just one who has not opened the chat.

There is a flip side worth noting. Not everyone mutes. A VnExpress feature profiled users drowning in nearly twenty work and personal group chats who could neither mute nor leave because of FOMO — the fear of missing out (VnExpress, "Bội thực chat nhóm", in Vietnamese). These people do not miss messages, but they pay in attention: reading every message during breaks, losing focus during work. The two opposite reactions — mute everything or read everything — are really two symptoms of the same condition: a mass group channel cannot separate signal from noise.

Zalo's scale makes this problem wider in Vietnam than in many other markets. On VNG's figures as reported by Tuoi Tre News, Zalo had 79.2 million monthly active users in the third quarter of 2025, up from 77.6 million a year earlier. For context, DataReportal's Digital 2026: Vietnam reports 85.6 million internet users in Vietnam at the end of 2025. The two figures are measured differently, so they should not be divided into each other, but together they show that Zalo has become the default communication layer for almost every internet user in the country — including business owners, accountants, purchasing managers and their partners.

When a tool becomes the default, every kind of information flows into it: family chats, parents' groups, residents' groups, customer groups, supplier groups, seminar groups. A business partnership request has to compete for attention with all of them. And in that competition, a muted group almost always loses.

Why we mute: the science of notification overload

Direct answer: we mute because people are not built to be interrupted dozens of times a day. Human-computer interaction research shows that more notifications are associated with more negative emotion and that every interruption carries a stress cost — so muting is a rational act of self-defence, not indifference.

One of the most cited studies on the subject is the work of Martin Pielot, Karen Church and Rodrigo de Oliveira presented at MobileHCI 2014. The authors logged real notifications on participants' phones for a week, alongside a diary of how each one felt. Participants dealt with an average of 63.5 notifications a day, mostly from messengers and email. Messenger notifications were attended to fastest — a median of around 6.6 minutes on weekdays and 3.5 minutes at weekends. More tellingly, the paper concludes that "an increasing number of notifications was associated with an increase in negative emotions".

That figure needs to be read with care: it comes from a small European sample collected in 2013, before smartphones and group chats were as dense as they are today. It says nothing directly about Zalo users. But the direction of the result — more notifications means more fatigue, and messaging apps are the main source — matches the daily experience of most people who run a business.

A second study goes straight to the question "what if you switch it all off?". Martin Pielot and Luz Rello ran a "Do Not Disturb Challenge" in which 30 volunteers disabled notification alerts on every device for 24 hours, then compared that day with a normal one. The abstract sums up the result: "without notifications, participants felt less distracted and more productive. But, they also felt no longer able to be as responsive as expected". Participants focused better, but some became anxious about not responding in time and felt less connected with their social group. The authors call it a dilemma — and it is exactly the dilemma of anyone who mutes a Zalo group: more quiet, at the risk of missing the one message that mattered.

Some will ask: why not just filter for the important notifications? Research by Abhinav Mehrotra and colleagues at CHI 2016 suggests it is not that simple. Analysing more than ten thousand real-world notifications from 20 users, the authors found that perceived disruption depends on the sender-recipient relationship, the alert type and the task at hand — and that "even a notification that contains important or useful content can cause disruption". An important message arriving at the wrong moment still feels like an intrusion. In a mass group chat, where every message arrives the same way, the recipient has no means of telling which one is worth opening before opening it.

The cost of interruption has been measured too. In "The Cost of Interrupted Work" at CHI 2008, Gloria Mark and colleagues at the University of California, Irvine found that interrupted people finished tasks faster with no loss of quality — but "this comes at a price: experiencing more stress, higher frustration, time pressure and effort". An earlier study by the same group at CHI 2005 observed office workers and found that 57% of working spheres were interrupted, with people spending about 11 minutes in a working sphere before switching. You may have read that "it takes 23 minutes to get back to work after an interruption" — we do not use that figure because we could not find it in the original papers we read.

What about surveys of muting behaviour itself? The public data we could find all comes from outside Vietnam. A survey of 1,005 people in the United States, run by Secure Data Recovery on the Prolific platform in 2023, found that 75% had muted an annoying group thread, 66% had felt overwhelmed by group chats, and 42% said managing group messages feels like a part-time job. Earlier, a 2018 Viber report based on 2,400 respondents in the US and UK found that 15% of Americans mute group chats every time they are added, and 28% mute a group if they receive nonstop messages. Both are company-run surveys of US users, so treat them as a signal about general behaviour, not a measurement of Zalo.

Table 1 — Research on notifications, interruptions and muting group chats. None of these studies measured Zalo users directly; the last two rows are company surveys in the US.

Study	Sample	Main finding	What it means for business group chats
Pielot, Church & de Oliveira — MobileHCI 2014	Real notifications logged for one week, small European sample	63.5 notifications/day, mostly messengers and email; more notifications associated with more negative emotion	Group chats are the biggest notification source, so they are the first thing muted
Pielot & Rello — MobileHCI 2017	30 volunteers with alerts off for 24 hours	Less distracted and more productive, but unable to respond as expected and less connected	Muting trades quiet for the risk of missing connections
Mehrotra et al. — CHI 2016	10,000+ real notifications, 20 users	Even notifications with important content cause disruption	A real partnership request still feels like noise if it arrives on the same channel as spam
Mark, Gudith & Klocke — CHI 2008	Controlled experiment	Interrupted people work faster to compensate, with more stress, frustration and time pressure	Reading every group message has a cost too, not just muting
Mark, González & Harris — CHI 2005	Observation of office workers	57% of working spheres interrupted; about 11 minutes per sphere before switching	The working day was fragmented even before group chats
Secure Data Recovery — 2023 (US survey)	1,005 people via Prolific	75% have muted an annoying group thread; 66% have felt overwhelmed	Muting groups is common elsewhere, not unique to Vietnam
Viber — 2018 (US and UK survey)	2,400 people via Pollfish	15% of Americans mute groups as soon as they are added; 28% mute when messages are nonstop	Older data, secondary reference only

Read the table across its rows and one thing stands out: no option is free. Keeping notifications on costs attention and stress; muting costs responsiveness and connection. So the right question is not "should I mute?" but "how do I make sure valuable connections do not have to travel through the channel I am forced to mute?".

What purposeful networking is, and how it differs from a mass group chat

Direct answer: purposeful networking means an introduction is only made after someone understands party A's need, understands party B's capability, and sees that the two genuinely fit. It is the opposite of a mass group chat, where everyone broadcasts to everyone and hopes the right person happens to read it.

A mass group chat works like broadcasting: one person speaks and a hundred listen — or, more precisely, a hundred might listen. That is efficient for general announcements such as event dates, new regulations or industry news. But a business connection is not a general announcement. A garment maker that needs help preparing documents for a European buyer does not need a hundred people to know; it needs the two or three firms that can actually do the work, and a reason to trust them.

Purposeful networking works like referral: instead of broadcasting, a coordinator takes in the need, asks follow-up questions, and introduces selectively. Three elements make the difference.

First, the need is written down clearly before anyone goes looking. Most "looking for partners" posts in group chats are too vague for anyone to recognise themselves in them. "Looking for a digital transformation partner" could mean accounting software, a website or factory automation. Once the need is clarified and written specifically — which industry, what size, what exactly, by when — finding the right party becomes feasible.

Second, the introduction comes with context. A message saying "this is B, she works in exactly the area you need, I have spoken to both of you" is entirely different from a promotional post in a group. The recipient knows why they were introduced, so they have a reason to open the message and reply. This is the crux: a purposeful introduction arrives through a direct channel, not buried in a muted group.

Third, someone is responsible for following up. In a group chat nobody is tasked with making sure a need gets met. A post nobody answers simply scrolls away and is forgotten. With a coordinator, someone asks "have the two of you met yet, do you need another introduction?".

The research above explains why this works better. Mehrotra and colleagues found that how disruptive a notification feels depends partly on the relationship between sender and recipient. An introduction from a coordinator you know, about exactly what you need, is the kind of message people are willing to open. A post from a stranger in a two-hundred-person group is not.

This is also the spirit of the Connection & Community pillar of the GROW Network Vietnam ecosystem: a platform where Vietnamese businesses join hands to support one another and grow together — SMEs that need support, capable service providers, and experts and partners ready to help — meeting through purposeful introductions rather than by chance in a group chat.

Zalo is still a good tool — the issue is how mass groups are used

Direct answer: Zalo is not the cause. It does what a messaging app should do — it lets users manage their own notifications, caps group size and separates out moderated Communities. What needs to change is the habit of relying on a crowded group chat as the main channel for business connections.

Looking at how Zalo designs groups, it is clear the platform has thought about scale. According to its official help pages, a standard group is capped at 100 members. When that cap is reached, the group owner can upgrade to a Community of up to 1,000 members — but only if the owner has a verified account and a zBusiness plan, and within a Community only the owner and deputies can tag every member at once (@all). In other words, Zalo deliberately limits one person's ability to "call" a thousand people simultaneously. That is a design choice made with noise in mind.

On the user side, Zalo lets each account create and join up to 1,000 groups. That number is not an invitation to join a thousand groups, but it shows that the technical ceiling is far above any person's real capacity for attention. The VnExpress feature mentioned above describes users who already felt overwhelmed at around twenty groups. The gap between "can join" and "can follow" is exactly where opportunities fall through.

Per-group muting, with a choice of duration, is the right tool for users to protect their attention. There is nothing wrong with using it. What is wrong — if anything — is expecting a group in which most members have muted notifications to keep working as an effective channel for finding partners.

Table 2 — Mass group chats versus purposeful networking: what each is good for. Zalo figures from Zalo Help (updated 2026); the "Purposeful networking" column describes an approach, not a measurement.

Criterion	Mass Zalo group / Community	Purposeful networking
Scale	Group up to 100 members; Community up to 1,000; each user in up to 1,000 groups	Each introduction includes only the parties directly involved
How messages reach you	Everything flows into one stream; for quiet you mute the whole group	Introductions arrive directly, with context on why you were introduced
Who filters	Each member filters alone, usually by muting the whole group	A coordinator filters first, against a clarified need
When nobody answers a need	The post scrolls away; nobody is responsible for following up	The coordinator follows up, introduces others, or reports that no match exists
Best suited to	General announcements, event dates, industry updates, quick exchanges in small familiar groups	Finding a supplier, expert, customer or partner for a specific need
Main risk	Signal drowns in noise; mute and you miss, unmute and you tire	Slower than a group post; depends on the quality of the coordinator

The table also shows that purposeful networking has its own weaknesses: it is slower than dropping a line into a group, and its quality depends on the coordinator. We point that out so you can judge fairly. For a quick question — "does anyone have the number for the business registration office?" — a group chat is still the better choice. For a partner decision that may last years, a few days to be introduced to the right party is a sound investment.

The practical advice is therefore to separate channels, not abandon them. Keep the Zalo groups you find useful for updates. Mute the noisy ones without guilt. But do not bet an important partner search on groups that you yourself have muted.

Why Vietnam's small businesses lose the most

Direct answer: micro and small firms make up the bulk of Vietnam's enterprises, and they are the least likely to have dedicated business-development staff. When the owner sells, manages and searches for partners all at once, they are the person most likely to mute group chats — and the person who most needs those connections.

The shape of Vietnam's business population shows the scale of the issue. Preliminary results of the 2026 Economic Census, released by the General Statistics Office on 13 July 2026, recorded 859,048 enterprises actively operating and generating business results at the end of 2025 — an increase of 2.4% on 2024 and 25.5% on 2020. In 2025 alone, according to the statistics office's report on enterprise development in 2025 (in Vietnamese), 297,500 enterprises entered the market, counting new registrations and firms resuming operations, up 27.4% on the previous year. Every new enterprise is a party that needs suppliers, customers, accountants, legal advice and software.

Note that these two figures use different definitions and should not be added or compared directly. The same statistics office report also states that the number of operating enterprises has passed one million — a figure based on registration data, which is different from the census count of 859,048 enterprises generating business results.

On structure, an analysis in BBW Vietnam on 09/10/2026 (in Vietnamese), citing the Vietnam Enterprise White Book 2026, reports that at the end of 2024 micro and small enterprises together accounted for 93.7% of all enterprises, while medium-sized firms numbered only 30,746, about 3.7%. These are figures quoted via the press; we have not been able to read the original White Book.

In our experience working with small businesses — an observation, not a measurement — a firm of a few dozen people rarely has its own business-development function. Partner searching usually falls to the owner or someone doing it alongside another job. These are also the people who receive the most notifications in a day: customers messaging, staff asking questions, suppliers sending quotes. Following the logic of the research above, they have the strongest incentive to mute group chats — and are therefore the most likely to miss connections.

There is a paradox here, which again is our inference rather than a survey result. Large companies often have dedicated teams who attend trade fairs, meet partners and track opportunities; they depend less on group chats to find partners. Small businesses are the opposite: group chats are one of the few near-free channels for reaching partners, yet it is the channel they have the least time to follow. The cheapest channel turns out to be expensive in another way — in missed opportunities.

Table 3 — The chain of links that leads to a missed connection. The middle column is sourced fact; the right-hand column is GROW's (inferred) reading of those facts, not a measurement.

Link	Sourced fact	(Inferred)
Demand for partners	859,048 enterprises actively operating with business results at end-2025 (2026 Economic Census, preliminary); 297,500 enterprises entered the market in 2025 (statistics office)	Many new enterprises means many searches for suppliers, customers and experts
Who is searching	Micro and small firms were 93.7% of enterprises at end-2024 (quoted via BBW — original White Book not traced)	Most have no dedicated business-development staff
The channel	Zalo: 79.2 million monthly active users and about 2.1 billion messages/day in Q3 2025 (VNG figures, quoted via Tuoi Tre News)	A partnership request competes for attention with every other kind of message
Recipient's reaction	Muting a group is an official Zalo feature recommended by the press; 75% of US respondents have muted an annoying group (Secure Data Recovery 2023)	Messages in a muted group are only seen when the recipient opens it deliberately
Cost of attention	Muting: better focus but less able to respond as expected (Pielot & Rello); interruptions raise stress (Mark et al. 2008)	Unmute and you tire, mute and you miss — important connections need another channel

We do not give a figure for "how many contracts are lost to muted groups" — no public source measures that, and a made-up number would only lead you to the wrong decision. What the chain above shows is a mechanism: plenty of demand, busy searchers, a noisy channel, and a rational response to a noisy channel, which is to mute it.

How GROW Network Vietnam approaches connection

Direct answer: GROW Network Vietnam is a connection platform where Vietnamese businesses join hands to help one another grow. Instead of adding you to a crowded group chat, GROW starts from your specific need, matches you with a suitable party and puts a coordinator in the middle — so you do not have to choose between notifications that exhaust you and a mute that makes you miss out.

GROW's network is built around three complementary groups of members. The first is small and medium-sized businesses that need support — a green-transition problem, a requirement from an export customer, a digital-transformation project or access to finance. The second is service providers with capability in those areas. The third is experts and partners willing to share experience and walk alongside. The value of the network is not that all three groups sit in one place, but that the right person from one group meets the right person from another at the right time.

The approach rests on the three principles described above. Clarify the need first. You describe what you need through the contact page; if the need is still broad, we ask follow-up questions to make it specific. Match on the need, do not broadcast. Introductions go only to relevant parties, with a reason why the two should talk. A coordinator follows up. If there is no suitable party yet, you are told so, rather than waiting for an answer that never comes.

The same principle applies across the specialist areas of the GROW ecosystem. For instance, an exporter that receives an environmental-data request from an overseas buyer often needs several kinds of help at once: advice, measurement, software, and the experience of a firm that has been through it before. We analyse this kind of multi-party need in our article on green supply chains for Vietnamese SMEs, and it is precisely the kind of problem that one introduction to the right party solves far faster than a post in a group chat.

If you want to understand how working with GROW proceeds before you sign up, the how we work page sets out the steps. If you have a specific need right now — finding a supplier, an expert or a customer, or wanting to become a provider that supports other businesses — the quickest route is to leave your details in the form at the end of this article.

Self-check: which groups to keep, which to mute, which needs to move

Direct answer: keep the small groups with a clear purpose that you actually read; mute the noisy ones without guilt; and move every important partner search to a direct introduction channel with a coordinator.

A simple way to start is to open your list of Zalo groups and ask four questions of each one. First: in the past thirty days, has this group given you any valuable information or relationship? Second: do you know the names and jobs of most of its members? Third: if you posted a real need here, do you believe someone suitable would answer? Fourth: have you already muted it?

If the answer to the fourth question is "yes" and to the first three is "no", that group is no longer your business-connection channel, even though you are still a member. There is no need to leave — just stop expecting anything from it. Zalo's own guidance presents muting as a way to stay in a group without being disturbed; use it in exactly that sense.

For the remaining groups — small, familiar, with a clear purpose — keep notifications on and take part properly. A twenty-person group where everyone reads is worth far more for connection than a thousand-member Community that everyone has muted. Pielot and Rello noted that two years after their challenge, half of the participants were still following through with their new way of managing notifications; actively reorganising your notifications is not a one-off chore.

Finally, when you have a real need — a supplier, an expert, a partner for a project — do not post it in your largest group and wait. Write the need down as specifically as you can, then take it to a place where someone reads it and is responsible for finding the right party for you. At GROW, that place starts with a contact form.

Muting a Zalo group is a rational response to a channel that is too noisy, but it also means a genuine business connection can sit unseen in that group without you ever knowing; businesses should therefore keep mass group chats for general updates and move partner searching to purposeful networking — matched on need, with a coordinator — so that every introduction reaching them is worth opening.