How long do contact lists take to process?

Explanation: The correct answer is **48 hours**. When uploading a contact list for targeting purposes on LinkedIn, it typically takes up to 48 hours for the platform to process the list fully. During this time, LinkedIn matches the provided email addresses or other contact information against its database to identify and verify the individuals associated with those contacts. This process ensures that the targeting is accurate and compliant with LinkedIn's policies regarding data privacy and permissions. Once the contact list processing is complete, advertisers can then use the matched contacts for their ad targeting, allowing them to reach specific individuals or accounts with their campaigns effectively. Therefore, understanding the processing time of contact lists is essential for advertisers to plan their campaigns effectively and ensure that their targeting strategy aligns with their desired audience segments.