Observed Signal · Apr 9, 2026 · Technical Release · Source: OnlineMarketing.de · Impact: 4/5 · Sentiment: Positive
WhatsApp rolls out usernames and BSUIDs
WhatsApp (Meta) has begun a limited, phased rollout of optional usernames for private and business users, with access arriving for more people over the coming months following an app update. The feature lets users be found without sharing phone numbers; t3n reports username rules allowing lowercase letters (a–z), digits (0–9), dots and underscores, forbidding names that start with "www." or end with top‑level domain suffixes, requiring 3–35 characters and at least one letter. Users can set an optional four‑digit "Username Key" which others must enter when contacting them via username. Usernames must be unique across Meta platforms (Instagram, Threads, Facebook) unless the accounts are linked. Earlier reporting (WABetaInfo / other outlets) also noted a small initial test group and that Meta announced Business‑Scoped User IDs (BSUIDs) to let businesses message without phone numbers; companies were asked to update systems by June 2026. A full global rollout date has not been confirmed.
Major platform (WhatsApp/Meta) introducing new user identifiers and business-scoped IDs affects identity frameworks, business messaging workflows and requires systems updates across CRM/enterprise integrations — significant operational and privacy implications for the ad/marketing ecosystem.
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Key Takeaways & Evidence Grounding
- WhatsApp is performing a phased rollout of optional usernames to users on Android and iOS, starting with a limited group.
- Username rules (per t3n): lowercase letters (a–z), digits (0–9), dots and underscores allowed; cannot begin with "www." or end in a top‑level domain; length 3–35 characters and must include at least one letter.
- An optional "Username Key" (four‑digit code) can be set so others must enter it to message a user via their username.
- Usernames are considered taken if already used on other Meta platforms (Instagram, Threads, Facebook) unless accounts are linked.
- Meta also announced Business‑Scoped User IDs (BSUIDs) enabling businesses to message users without phone numbers and asked companies to update systems by June 2026.
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Related Market Signals & Shifts
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WhatsApp Adds Usernames, Keeps Phone Requirement
WhatsApp announced a new usernames feature that lets people share their profiles without exposing their phone numbers while still requiring a phone number to create an account. Users can reserve usernames starting today; WhatsApp said the feature will officially roll out later this year and will notify users when reservation becomes available in their country. Usernames must be between 3 and 35 characters (article updated to reflect this). Meta is reserving usernames for top celebrities, VIPs and organizations, and businesses/creators can claim their Facebook or Instagram username as their WhatsApp username. Usernames will not be searchable in the app — only people who know an exact username (or a user’s optional “username key”) can message that account — and users can disable or change the feature at any time. Rival messaging apps including Telegram, Signal and Wire have offered usernames for years.
WhatsApp Introduces Usernames to Hide Phone Numbers
Meta-owned WhatsApp has opened a global reservation period for unique usernames that will allow users to communicate without exposing their phone numbers. Reservations began at the end of June 2026; WhatsApp confirmed the launch in a company blog post but said the reserved names will be usable as a replacement for phone numbers only after a phased rollout in the coming months. Account creation will still require a phone number, there will be no public searchable directory, and an optional "Username Key" can be enabled to require a code for first-time messages from strangers. Creators, small businesses and organisations can claim matching Facebook/Instagram usernames. The app exposes a reservation option in Settings > Account > Username and offers a username generator; some users already see the option while others will receive it later.
WhatsApp rolls out username reservations
Meta-owned WhatsApp began allowing its users to reserve usernames in June 2026. Although the username feature is not yet active, users can claim a handle now to avoid duplication and start using it when the feature goes live later in 2026. Usernames let people share a WhatsApp contact without revealing their phone number and may simplify business-to-customer contact. WhatsApp is reserving certain public-figure and entity handles, allows users to claim matching Facebook or Instagram handles via login, and provides an optional "username key" — a four-digit code recipients must enter before reaching someone who shares their username. Users can create, edit or delete their username from Settings > Account.
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