Prepare Your CSV File
Ensure your CSV contains one of these fields: Email, Phone number, or Mobile Advertiser ID (MAID)
Log into TikTok Ads Manager
Access https://ads.tiktok.com
Navigate to Audience Manager
Go to the 'Audience' section in the left sidebar
Create Custom Audience
Select 'Create Audience' > 'Customer File'
Upload CSV File
Upload your prepared CSV file (CSV or TXT format)
Wait for Processing
TikTok matches your data to users on the app (can take several hours)
Verify Matched Audience Size
Check that the audience size is appropriate for your targeting
Create TikTok Ad Campaign
Set up a new campaign in TikTok Ads Manager
Select Your Custom Audience
Choose your uploaded audience as the target audience
Set Ad Parameters
Configure ad format, budget, and targeting options
Launch Campaign
Review and launch your campaign to your custom audience