You can import a CSV file with a maximum of 100,000 lines at a time.
Depending on your plan, the number of leads you can own as a team in your Leads section is also limited to the following:
Hunter Plan | Leads limit |
Free | 100,000 |
Starter | 2,000,000 |
Growth | 10,000,000 |
Scale | 30,000,000 |
Enterprise | Custom |