In my current sales role, I have about 60 customers and 200 individuals that I need to maintain a relationship with. There is no effective way to have a 1:1 relationship with them all in the traditional sense. So what I will be doing is emailing them one a month with a 10 min video to share with them the latest trends and updates. The following article by Wistia is great on how to write great customer scripts for videos.

https://wistia.com/learn/production/wistias-scripting-tips