Last updated: November 3, 2025
Available with any of the following subscriptions, except where noted:
When bot filtering is turned on, HubSpot excludes suspected bot activity from your email performance data. This helps provide a more reliable view of human interaction with your emails so you can better measure the success of your email campaigns.
Understand how bot activity is identified and excluded
For marketing emails, bot activity includes triggers initiated from privacy filters such as Apple's Mail Privacy Protection and corporate screeners such as Mimecast. HubSpot automatically detects whether email activity was triggered by a human action using IP filtering and other detection algorithms.
By default, bot filtering will be turned on in your account. When this setting is on, HubSpot will filter out suspected bot activity to help you gauge organic engagement with your marketing emails.
Please note: any contact properties related to email clicks or opens will be affected when bot filtering is turned on. For example, if HubSpot detects a bot open for an email, the Marketing emails opened counter will not be increased.
Review bot filtering status
After you've sent a marketing email and your recipients engage with your content, you can see whether bot filtering was turned on for that email send:
- In your HubSpot account, navigate to Marketing > Email.
- Click the name of a sent email.
- To the right of the Performance and Recipients tabs, review whether bot filtering is turned on or off.
