If you'd like to add Loom videos to your email sequences.
Please follow the following steps:
Go to Loom’s Share page.
Go to Embed and click on Copy Thumbnail code.
In Instantly account, go to Campaign - Sequences and click on the Code View button.
Insert the copied code where you want it.
You should now be able to both preview and send that embedded video.
FAQ
Q: I want to insert the code for my loom video, but I am not sure what the code should look like.
A: The code for your loom video should look like this.
Especially the second last line which starts with "src". This is responsible for creating a thumbnail GIF in your email body.