Formerly, to know whether the number has been registered in the WhatsApp service, the operations you need to do are:
1. Turn on your mobile phone and save the number to your contact list or phone book;
2. Visit WhatsApp Web then search for the saved contacts one by one and open the chat. If the number is registered in whatsapp and still has an account, then you will see the contact in whatsapp. Otherwise, whatsapp will show invite him.
However, since the advent of the WhatsApp filter tool, it has become very easy to check whether a number is registered to a WhatsApp account.
Here is how to use the WhatsApp filter tool to check whether the number uses WhatsApp or not.
1. Launch the WhatsApp filter tool on your computer.
2. Navigate to the “Filter Contact” section of the app and tap “+” to upload the list of your number from file (it can be csv, txt or any other type of file).
3. Click run and it will automatically visit the web version of WhatsApp for verification
After the search is completed, it will automatically category the numbers into 2 groups. One is that the number is on WhatsApp, and the other group is that the number does not register a WhatsApp account. One advantage of this grouping is: You can quickly import these numbers with WhatsApp accounts to the taskbar for quick operation. Here is how it looks:
In addition to checking whether the number has a WhatsApp account or not, you can also use this WhatsApp tool to search for numbers in batches from the web and send messages in batches.
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