Use Import2 Wizard's CSV import to simultaneously add and update contacts in Salesforce. Use the easy, guided setup to define how you find existing contacts, and how to import the data from your CSV file.
1. Connect your Salesforce account
2. Upload your contacts CSV
3. Complete the field mappings, including how to find existing contacts and what fields you wish to update
4. Start the import and see the contacts data populated in Salesforce