First, some definitions:
- A contact is a single contact in your database
- An event can be a send, open, click, bounce or unsubscribe – all of which are counted separately
The limit for contacts and events to sync is cumulative ie. it’s a sum of your contacts and email events recorded in Pipedrive. So if you send out a monthly newsletter to 200 contacts, 50 of them open and 5 click, then the total sync count is 255:
- 200x send events recorded
- 50x open events recorded
- 5x click events recorded
Then, if you update a field (ie. industry) of 60 of your contacts in Pipedrive and sync that with Mailchimp, it adds another 60 events to the count, bringing your total monthly sync count to 315.