Use a service like Truecaller or NumVerify

[Shishirgano9]

Verify Phone Numbers: Use phone validation tools to ensure that the phone numbers are active and correctly formatte. This can help reuce the number of unsuccessful calls.
Update Information: Reach out to contacts to confirm their information, especially if it has been a while since you last communicate. This can be done through a quick email or text message.
Check for Opt-Outs: Ensure that you respect individuals who have opte out of receiving calls or communications from your organization. This is crucial for maintaining trust and compliance with regulations.
Categorize Contacts: As you clean your data, consider categorizing contacts phone number list base on their engagement level or past interactions. This will help you tailor your outreach efforts.
Use Data Cleaning Tools: Consider using data cleaning software that can automate the process of identifying duplicates and validating phone numbers.
Example of Data Validation

Tool: Use a service like Truecaller or NumVerify to validate phone numbers before adding them to your list.
Process: Create a checklist for data cleaning that includes steps for verifying, updating. The categorizing contacts.
Step 5: Segment Your Phone Number List
Segmentation is a powerful strategy that allows you to tailor your outreach efforts base on specific criteria. By segmenting your phone number list, you can create targete messaging that resonates with different groups.
Common Segmentation Criteria:
Donation History: Segment contacts base on their past donation amounts and frequency. This allows you to tailor your ask base on their giving history. For example, you might ask long-time donors for larger contributions.