Latest, 20 Oct 2026:8 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 20 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About YiSou - Linkedin & WhatsApp Assistant
LINKEDIN SALES ASSISTANT
Use this feature on www.linkedin.com to discover potential email addresses and phone numbers associated with LinkedIn profiles. View contact details in one place, copy them quickly, or sync selected information to your YiSouSou SaaS account.
WHATSAPP NUMBER RESEARCH
Use this feature on web.whatsapp.com. Search public results from Google, Bing, and Yandex for international phone numbers using product or industry keywords. Countries, platform scopes, and result pages can be configured.
NUMBER VALIDATION AND MANAGEMENT
Use the number research workspace on web.whatsapp.com to normalize, deduplicate, and validate WhatsApp availability. CSV import and export are also supported.
YISOUSOU ACCOUNT INTEGRATION
Connect securely to a YiSouSou SaaS account, view the current points balance, and sync selected information. Some discovery or validation actions may use points when results are returned.
How to Use
1. Install the extension and sign in to YiSouSou SaaS.
2. Open a LinkedIn profile and use the sales assistant.
3. Open WhatsApp Web and configure a keyword, country, and search scope.
4. Search, validate, and export the required results.
Privacy and Responsible Use
The extension accesses supported websites and processes related data only when the user requests a feature. Contact availability depends on public information, platform content, and the user’s access rights. An email address or phone number is not guaranteed for every profile.
Use this extension only for lawful business research and customer management. Users must comply with applicable privacy, anti-spam, marketing, and platform rules. Harassment, fraud, spam, and unauthorized data collection are prohibited.