It would be great to see a test functionality within the sequence tools for sales people to get visability on what their emails will look like through the email client itself.
This will ensure that sales people don't oversee any mistakes or broken links within the HubSpot tool as it's much easier to notice this once the emails come through.
Instead of having to remove the delay from the sequences and risk potentially sending a faulty sequence to a prospect it would be great to see a test button that automatically sent the email templates that are included in the sequence to yourself or chosen contact.