Improve internal communication? Say it with more than words.
Email can be useful sometimes. You can get meeting minutes, reminders for events, etc. You can write them out and send them. Unfortunately, it isn't always sufficient. Announcing major initiatives, communicating urgent messages. You must make sure that everyone is paying attention to what you are saying.

How can I improve internal communication? Three hurdles
Information overload
Besides the fact that they are already hearing a lot. Email is coming in at an increasingly fast pace, so anything that lands in their inbox is quickly drowned out by the constant process of email delivery. Not only does that mean that most emails are skimmed, but it also means that your message is competing against zillions of others out there.
Uncontrollable.
People often resort to emails for internal communication because they say the same thing to everyone. Even though they'd prefer to speak in person, they can't. If that isn't possible, managers or regional directors can provide in-person announcements, which inevitably results in slightly different ways of distributing information.
Passiveness:
The resistance to change is strong. It takes a good reason to get them on board. Moreover, you need to present them with a convincing reason in a way that will convince them. They might not recognize the importance of a new initiative, or the opportunity in a upcoming project, or the potential impact of an acquisition. Logic and facts are not enough. A compelling vision is necessary to connect with their emotions and convince them that change is necessary.
Video enables innovative internal communication
Video inspires people.
Video is better than emails because it engages the viewer, it's quick, and it's easy to understand. The word "video" in the subject line has been found to increase email open rates significantly. That should help with the first hurdle. Video can make your message more clear because it can use both words and images. Furthermore, when it is well crafted and focused, it can create a powerful moment of insight in people’s minds. This will enable them to understand your message and be inspired to take action.
Video can help make it 'stick'
Simply because everyone watches and hears the same message. Additionally, now that you have their attention, you can follow it up with a longer presentation. Then, they will be able to see what they can do now and what to expect in the future.
Videos inspire people to act.
The emotional impact of videos makes people change. Using the dynamic medium of video, you can share your passion for whatever you're trying to say.