Pulse is a project's single activity feed — a running timeline of everything that happens on a project: comments and notes your team adds, HubSpot emails and SMS with the customer, task activity, file changes, and system logs. It's where you catch up and collaborate without leaving the project.

The Pulse activity feed — comments, emails, SMS, and logs in one timeline, with filters and a composer.
The filter row at the top narrows what you see:

Filter the feed by type (All / Comments / Logs / Emails / SMS) and by time range.

Click Reply on a message, then type @ and a name (e.g. @adrian) — Sunrise suggests matching employees to mention.
Use the composer at the top to post a note with the rich-text toolbar (bold, italic, underline, lists, images, attachments) and @mention teammates, then click Send. Hover any message to reply or pin it to the top; on your own messages you can also edit or delete.