Hi Sarah for PieSync here! 

We are a happy partner of Pipedrive and we help you sync your contacts in 2-ways real time between Pipedrive and a ton of other apps like HubSpot, Mailchimp, Google Contacts, outlook, ActiveCampaigne,  ...

It's a very easy 3-step set up to keep your contacts clean.

Let me know if you have any questions!

Sarah