Populate 'Assigned to' field when logging emails to HubSpot

Problem
When emails are logged to HubSpot via Front's integration, they are marked as 'unassigned' and do not appear in activity reports, making it impossible to track email volume by team member.

Request
Populate the 'Assigned to' or 'Created by' field in HubSpot with the sender's name when logging emails, so they appear correctly in activity reports.