Yes, you can upload contacts into a Clay table and update them without adding duplicates. Here's how:
1. First, use the "Lookup Contact" action to check if contacts already exist in your CRM.
2. Use email as the primary identifier for contact uniqueness.
3. Set up a conditional run to only add net new contacts. This prevents duplicate entries in your CRM.
4. Use the "write to table" feature to transfer data between tables if needed.
By default, Clay won't create duplicate records in integrated CRMs like Salesforce.
This approach ensures your data remains clean and duplicate-free while updating your contacts.