How to bulk remove phone numbers that haven't activated Line? A clever trick to save on marketing costs.

I. Why is it necessary to remove phone numbers that have not activated Line in batches?

• The phone number has never been activated for Line, making it a completely invalid number. Messages cannot be delivered, directly wasting push notification costs.
• The number was once active on Line but has been deactivated and the account history has been cleared, which is equivalent to not being active at all. There is no response when contacted.
• The phone number is either invalid or out of service, so even if you want to activate Line, you cannot use it; it is a doubly invalid number.
• Virtual numbers/SMS verification code platform numbers often cannot be properly activated on Line, have poor stability, and are prone to triggering platform risk control measures.

II. Which unenabled identification dimensions should be focused on when using Line for number screening?

• Core Dimension 1: Precise Verification of Activation Status. This is the core of Line's number screening process. By connecting to Line's compliant interface, it directly determines whether a mobile number has been successfully activated for Line, eliminating over 80% of unactivated numbers at once, controlling the problem at its source.
• Core Dimension Two: Basic Number Validity Verification. Simultaneously verify whether the mobile number is invalid or suspended, avoiding misjudgments of "not activated" due to the number itself being invalid, improving the accuracy of Line's number screening and reducing the omission of valid accounts.
• Core Dimension Three: Security and Compliance Screening. Virtual numbers and numbers from SMS verification platforms are eliminated. These numbers are often unable to activate Line and may also affect the main account's risk control. This ensures that Line's number screening process eliminates invalid numbers and avoids risks.
  
  

III. What are some practical tips for bulk removing unactivated mobile phone numbers?

• Tip 1: Use professional tools for batch screening and efficient cost control. For screening millions of Line numbers, ITG's full-domain screening can be used. It can connect to Line's compliant interface and operator data to batch verify the activation status of mobile phone numbers, whether they are virtual numbers, and automatically mark and remove inactive numbers with an accuracy rate of over 95%. The efficiency is 50 times higher than manual screening, which greatly saves screening time.
• Tip 2: Lightweight manual verification, low-cost adaptation. For small to medium batches of numbers, you can manually try adding them as Line friends. If the message "Account does not exist" appears, it means the phone number is not activated. The operation is simple and requires no complicated technology. It can be used as a supplementary method to Line number screening and is suitable for projects with small budgets.
• Tip 3: Optimize data preprocessing to improve efficiency. First, standardize the format of the number list, remove duplicate values, and calibrate the regional codes. Then, perform Line screening to avoid duplicate verification and invalid operations, ensuring that no unactivated numbers are missed and that valid accounts are not mistakenly deleted.
  
  

IV. How to further reduce marketing costs after using Line for number screening?

• Tiered targeting, focusing on high-value accounts. Based on Line's screening results, activated accounts are categorized by activity level, with high-activity accounts receiving priority for pushing core content, thus avoiding resources being scattered across low-value accounts.
• Regularly review and update the list to keep it up-to-date. Phone number activation status changes dynamically, so it's recommended to conduct a Line number review monthly, removing newly added but not yet activated or cancelled numbers, and adding newly activated, accurate accounts.
• Operate in compliance with regulations to avoid additional losses. After filtering out risky numbers using Line's number screening system, maintain and operate your accounts in accordance with Line's platform rules, avoiding frequent mass messaging and sending inappropriate content to prevent secondary costs from account suspension.
  
  

V. Conclusion