In summary: As well as the emails and possibly phone calls, you should expect:

> Online script for review.

> Online storyboard review.

> Online video drafts for review.

These are the essential collaboration tools that will ensure you:

> Stay on schedule.

> Confirm correct image choices.

> Get all your team and approval layers involved in the right way.

> Avoid potential delays or costly misunderstandings during the later stages of  the project.

So any video company you use must supply these or something similar.

Ask them. They should be proud to tell you.

Much of the commitment, transparency and collaboration you need will have been achieved at a single stroke.