[Repost] An update about usernames for WhatsApp

As shared last year, we are excited that WhatsApp will soon support one of our most requested features – the ability to adopt a username. This has strong benefits for people and businesses alike: usernames offer people a simple way to further protect their privacy by displaying their username rather than their phone number when messaging with others in 1:1 conversations and in groups. When available next year, this optional feature will give people more control over how they share their contact information. For businesses, usernames will allow you to easily build your brand presence on WhatsApp based on your name rather than your phone number, making it easier for customers to connect with you. Usernames will make it easier for people to message your business and give them confidence about their privacy – two positive changes to the business messaging experience on WhatsApp. We have heard that people feel more confident engaging with businesses when their personal information stays private, while still retaining the choice to share their number if they wish. There are a few steps you will need to take to ensure your ability to support the customers who choose to adopt usernames. Businesses will need to be ready by June 2026, and we are sharing this update in advance to give you ample time to prepare.  
Here are some of the key things you will need to prepare for:Work with your partner to integrate with the new customer identifier: When people adopt usernames, WhatsApp will provide partners and businesses that use the API a new, unique backend identifier which can be integrated into workflows in place of customers’ phone numbers. In order to process messages from customers who have adopted usernames, your partner will need to prepare their systems and workflows to incorporate this new identifier, referred to as a business-scoped user ID in our technical documents. This new identifier will be available on current and new API versions as a new webhook field. Developer docs are available hereUpdate messaging workflows and connected systems: Start updating connected systems that rely on phone numbers, such as CRMs, to take in the new identifier. We explain more about the changes here.Looking aheadPlease begin working with your partner to plan how to adjust to this change in 2026. 

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