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How to bulk verify if numbers have a WhatsApp account
How to bulk verify if numbers have a WhatsApp account

Learn how to check phone numbers to avoid problems with WhatsApp marketing campaigns

Updated over a week ago

If you are a developer, you may find our open-source project for checking numbers programmatically useful, as it can be faster than doing it with this app.

You can find it in our GitHub profile.

Validating phone numbers for WhatsApp marketing campaigns ensures accuracy, improves engagement rates, saves costs, enhances sender reputation, ensures regulatory compliance, enhances customer experience, provides accurate campaign analytics, and enables better segmentation and targeting.

You can use 2chat to check if a phone number is valid and available for WhatsApp messaging. This validation can be made for one number or a massive validation.

Follow these steps:

  • Click on Tools and the View button in the Number Checker tool.

Validate phone numbers for WhatsApp manually

  • Click on upload the phone number manually here to enter phone numbers one by one

  • Enter phone numbers one by one and click on Check and add new phone numbers using the "+"

Bulk validate phone numbers for WhatsApp

  • If you have a list of phone numbers to validate you can enter these phone numbers in an Excel file (xls, xlsx) or CSV with just one column.

  • In the Phone column field, you can select the column containing the phone numbers to validate and next, you can click on the ▶ button.

  • In the column On WhatsApp you can see the validation result, you can see if the phone number is on WhatsApp (☑), is not enabled for WhatsApp ( ⚠) or the phone number is invalid (🛇)

Errors and Speed Considerations

The maximum checking speed per connected number is 50 per minute. If you connect more than one number this speed gets multiplied by the amount of numbers you connect. For example, with 3 numbers connected, you will be able to check 150 numbers per minute (50 x 3).

Trial accounts are limited to 10 checks per minute.

In some cases, the speed can be impacted by your API usage of other products. For example, if you are also sending messages while you verify numbers, you may get errors regarding speed limits or throttling. This is normal and should not be considered an error as this is the natural limitation of WhatsApp inability to handle too many concurrent requests. Going faster can put your number at risk of a ban or violate WhatsApp's Terms of Service.

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