Pipedrive email filters are really useful for keeping better track of your emails. You'll find the Filter button when you open up the Mail tab of your Pipedrive account.
Whether you're using Smart Email BCC, or you're using the Email Sync of the Advanced Plan, you can now filter your emails by up to six parameters, making finding the emails you need in a sea of contacts that much easier.
Currently you can filter your emails by any combination* of:
*Except where the combinations would cancel each other out, e.g. 'Shared' and 'Not shared'