WhatsApp Usernames Are Coming in 2026: What Your Business Needs to Know

Introduction: Why WhatsApp Is Finally Ditching the Phone Number

For years, sharing your phone number has been the price of entry for a WhatsApp conversation. That price has become increasingly hard to justify.

Privacy concerns around phone number exposure have driven millions of users to competitors. In 2021 alone, Telegram saw over 2.2 million downloads in a single week following a WhatsApp privacy policy update, while Signal gained more than 100,000 new users. As one industry observer noted, "Users are more concerned about sharing their phone numbers, which are the default identifiers on WhatsApp, and this was one reason people were adopting other platforms like Telegram or Signal."

The Privacy Wake-Up Call

The message was clear: users wanted to communicate without handing over their most personal identifier.

After years of development, WhatsApp is finally responding. The platform has started rolling out usernames to a limited number of users on Android and iOS, with a full launch expected by June 2026. Users can now choose a unique handle — @yourbrand or @yourname — and share that instead of their phone number.

For businesses, this shift brings both challenges and opportunities. The way you identify, reach, and retain customers on WhatsApp is changing. But with the right preparation, you can turn this privacy update into a competitive advantage.

This article breaks down everything you need to know: what's changing, when, and how SaleSmartly helps you stay ahead.

What Are WhatsApp Usernames?

WhatsApp usernames are unique handles that give users an alternative way to connect without sharing their phone numbers. Similar to how usernames work on Instagram or Telegram, this feature adds a layer of privacy and convenience to WhatsApp conversations.

Username Rules and Requirements

WhatsApp has defined a clear set of rules for usernames:

• Must be between 3 and 35 characters in length
• Must include at least one letter
• Can only contain lowercase letters (a–z), numbers (0–9), periods, and underscores
• Cannot start with "www" (to avoid appearing like an official website)
• Cannot end with a domain such as .com, .net, .org, or .edu
• Must be available across Meta platforms (Instagram, Facebook, and WhatsApp)

Behind the scenes, a chosen handle has to be available across Meta's wider ecosystem. Users may need to confirm ownership of an existing Instagram or Facebook username through Accounts Center before using the same identity on WhatsApp.

Username Key: An Extra Layer of Security

WhatsApp will also offer a "username key," which is a four-digit code required to send messages to a new username. This optional feature adds an extra layer of control for users who don't want unsolicited chats. Only people who have both your username and the key will be able to reach you.

How Business Usernames Work

Businesses will also be able to adopt a business username, giving them a clearer, more brand-forward identity on WhatsApp. Users will be able to message @YourBrand instead of memorizing a potentially confusing phone number.

However, adopting a business username does not hide your business phone number in the WhatsApp or WhatsApp Business app. The username works as an additional identifier, not a replacement for your phone number. Verified businesses with a blue badge will have early access to reserve their preferred username. Starting in early June 2026, businesses using the API will be able to claim their existing names: WhatsApp display names, verified accounts, or Facebook/Instagram business usernames.

What Is BSUID and Why Does It Matter for Businesses?

Alongside usernames, WhatsApp is introducing a new backend identifier called the Business-Scoped User ID (BSUID).

What Is BSUID?

The BSUID is a unique and anonymous identifier generated by Meta for each specific combination of user and business. It is an alphanumeric string of up to 128 characters. The BSUID uses the user's two-letter country code according to the ISO 3166 alpha-2 standard as a prefix, followed by a dot and an alphanumeric string (for example: US.13491208655302741918).

Key characteristics of BSUID:

• It is business-scoped: a user's BSUID for "Company A" will be different from their BSUID for "Company B."
• It is generated automatically by Meta
• It is unique to each business portfolio-user pair
• It does not contain personal information, only the country associated with the account
• It replaces the phone number in webhooks for users who have adopted a username
• It appears in the user_id parameter of incoming WhatsApp webhook events, regardless of whether the user has enabled the username feature

Why BSUID Matters for Your Business

Starting in June 2026, when a user adopts a username and chooses to hide their phone number, WhatsApp will no longer share their phone number with your business. Instead, you will receive only the BSUID.

If your integration relies exclusively on phone numbers as the primary key, it may break when interacting with users who have adopted usernames. This means your CRM, analytics dashboards, and message-routing logic must be updated to support the new BSUID field.

Which Message Flows Will Break If You Don't Adopt BSUID?

Two specific message flows will break when interacting with a user who has adopted a username:

1. Click-to-WhatsApp ads: Any Meta ad driving users to WhatsApp will stop generating conversations for that user segment. Ad spend keeps running. Conversations do not.
2. Inbound service messages: Users reaching out with a query, a request, or an issue will not arrive on your platform if their phone number is not visible and your system is not prepared for the BSUID.

The failure carries no visible technical alert. Conversations simply do not arrive. For businesses with active paid social investment and WhatsApp as a primary service channel, this risk is direct and immediate.

April 2026 Update – The Phased Rollout Has Begun

As of April 2026, WhatsApp usernames are finally moving from testing to a limited public rollout. The feature is now available to a "very limited" number of users as part of a phased rollout on recent Android and iOS builds.

How to Check If You Have Access

Users can check if they are part of the initial rollout by visiting their profile settings in the app. Those included will see a new option to create a username, which they can share instead of a phone number when starting chats or calls.

What This Means for Businesses

While the consumer-facing rollout is gradual, businesses cannot afford to wait. Meta has already begun notifying businesses about the upcoming changes and the June 2026 deadline.

BSUIDs will begin appearing in webhooks starting March 31, 2026. However, Meta APIs will not support sending messages targeted to BSUIDs until May 2026. This gives businesses a critical window to prepare.

The 30-Day Transition Window

WhatsApp has designed a transition mechanism worth knowing. For a period of 30 consecutive days following any interaction between the business and a user, WhatsApp will automatically return the user's phone number. Outside that window, BSUIDs become the only identifier available. This means businesses that maintain active conversations with customers between now and June 2026 will have a smoother transition.

What Businesses Need to Do to Prepare

The deadline is June 2026. Here are the key steps businesses should take now.

Update Your Webhook Integrations

Your systems must be able to receive and process BSUIDs sent via messaging webhooks. As of March 31, 2026, a contact's BSUID is already being delivered in webhook notifications.

Build Logic to Handle Multiple Identifiers

Your CRM should support multiple identifiers, including both phone numbers and BSUIDs. Map BSUIDs to existing CRM records to maintain conversation history and service continuity. For contacts who already have a registered number from previous interactions, your platform should keep both pieces of data to ensure service continuity.

Update Campaign and Analytics Tools

Any system that relies on phone numbers for audience segmentation, campaign triggering, or reporting must be updated to work with BSUIDs. This includes analytics dashboards, billing systems, and campaign management tools.

Adjust Bots and Automated Journeys

Modify your automated workflows to request phone numbers only when absolutely necessary. For routine interactions, your bots should be able to operate using BSUIDs as the primary identifier.

Claim Your Business Username

Secure your preferred handle early. Verified businesses with a blue badge will have early access. Starting in early June 2026, businesses using the API will be able to claim their existing names: WhatsApp display names, verified accounts, or Facebook/Instagram business usernames.

Preserve Existing Customer Relationships

Businesses must ensure that inbound or outbound interactions are maintained with existing customers between now and June 2026. This ensures that user identity mapping is retained when customers later reach out using usernames. The 30-day transition window means that active conversations preserve phone number visibility, giving you time to migrate to the new system.

How SaleSmartly Helps You Prepare for the WhatsApp Username Update

SaleSmartly is actively working to ensure a seamless transition for businesses using WhatsApp Business API through our platform. Here's how we help you stay ahead of the June 2026 deadline.

Unified Customer View Across Identifiers

SaleSmartly's Social CDP automatically handles multiple identifiers, including both phone numbers and ONE ID. When a customer reaches out using a username, our system maps the user information to the existing customer profile, maintaining complete conversation history. Your team never loses context.

Contact Import and Migration

Through SaleSmartly's contact management features, you can easily upload and sync existing WhatsApp customer data. Our platform helps you maintain customer continuity during the transition period. You can export all customers tagged with specific labels and create targeted segments for the BSUID era.

Click-to-WhatsApp Campaign Support

SaleSmartly integrates with Click-to-WhatsApp ads, ensuring your advertising investment continues to generate conversations even as WhatsApp transitions to BSUIDs. Our platform is designed to handle the new identifier flows seamlessly, so your ad spend keeps driving conversations, not silence.

Tagging and Segmentation

SaleSmartly's tagging and segmentation features become even more critical. As phone numbers become less reliable as universal identifiers, having a robust system for organizing and managing customer relationships, independent of any single identifier, is essential.

• Customer tags: Organize customers by behavior, interest, purchase history, and lifecycle stage
• Smart segmentation: Build targeted audiences based on tags and interaction patterns
• Unified customer profiles: Access complete customer history regardless of which identifier they use

Omnichannel Continuity Across Platforms

WhatsApp is not the only channel where customer relationships live. SaleSmartly's omnichannel platform unifies conversations across WhatsApp, LINE, Facebook Messenger, Instagram, Telegram, and website chat. Your customer data remains centralized and accessible in one place.

AI Automation That Adapts

SaleSmartly's AI agents and automation workflows are designed to work with the identifiers your customers use, whether phone numbers or BSUIDs. Your automated journeys continue running without interruption. Routine questions about hours, pricing, and order status are handled automatically, while complex issues escalate to human agents with full context.

Official Meta Partnership

SaleSmartly is an official Meta Business Partner, recognized for our expertise in helping businesses leverage Meta's platforms for customer engagement. We work closely with Meta to ensure our platform stays ahead of updates like the WhatsApp username rollout, so our customers don't have to.

Frequently Asked Questions

1. Is the phone number still required to use WhatsApp?

Yes, a phone number is still needed to sign up and use the messaging app in the first place. Usernames sit on top of WhatsApp's existing system and don't replace it entirely.

2. What is a username key?

A username key is a four-digit code that can be required before someone messages you for the first time. It's an optional feature that adds an extra layer of privacy and control.

3. How does this compare to Telegram usernames?

Telegram has long supported usernames, enabling contact without phone-number sharing. WhatsApp's implementation brings it in line with competitors, aiming to deliver the same privacy benefits while maintaining its massive user base. The key difference is that WhatsApp usernames are optional and sit on top of the existing phone-number-based system, whereas Telegram has offered username-based communication for years.

Conclusion: The Countdown to June 2026

June 2026 is closer than it appears. For businesses using WhatsApp Business API, the time to prepare is now.

The introduction of usernames and BSUIDs represents a fundamental shift in how WhatsApp identifies users. This is not a minor feature update. It is a reconfiguration of the identity layer on which your entire conversational infrastructure operates.

Businesses that prepare early will:

• Maintain conversation continuity with existing customers
• Continue receiving messages from Click-to-WhatsApp campaigns
• Preserve the value of their CRM and analytics investments
• Build trust with privacy-conscious customers
• Secure their brand identity with a business username

Businesses that wait may find themselves experiencing "Operational Silence". Ad spend that keeps running while conversations fail to arrive, and customer messages that never reach your team.

Don't wait until June to discover your systems aren't ready.

Start preparing your WhatsApp Business API integration today. Update your webhooks. Build BSUID handling into your CRM. Map your identifiers. And let SaleSmartly help you centralize and manage your customer relationships across all channels, regardless of how WhatsApp chooses to identify your customers tomorrow.

👉 Start your free trial to see how SaleSmartly helps businesses prepare for the WhatsApp username update and beyond.

Related Reading

Everything You Need to Know About WhatsApp Business API: Key Features, Use Cases & How to Apply

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