Cold emails that incorporate personalized video (e.g. Loom)

Has anyone had success using personalized video in conjunction with cold email outreach? Loom (or similar) seems like an easy way to record / embed 1:1 videos as part of cold outreach.

Would love to know if --
o The videos have any impact on deliverability
o If you've seen positive engagement with the videos
o Recommended services besides Loom -- I'd like something with enough power to stitch together a personalized intro with some boilerplate content.