Email activities are created in Salesforce from the events recorded on our Email API. An activity record will be created for each unique send, open, or clickthrough, if you're syncing these email activities to Salesforce. While you won't see duplicates of the same send, if a Salesforce lead/contact opens or clicks on an email multiple times, you'll see a unique activity record for each of those actions in Salesforce.
If you'd like to change which engagements in HubSpot are synced to Salesforce follow the instructions here:
- In your HubSpot account, navigate to Account Menu > Integrations.
- Click Settings under Salesforce.
- Select Engagement Type Mappings in the left sidebar menu.
- Here you'll see which HubSpot engagements you've selected to sync to Salesforce as activities. Uncheck the box next to any HubSpot marketing engagements for which you'd no longer like to see corresponding Salesforce activities.