Anyway to add voice memos?

I am about to take a vacation for a week & won't be available for sales calls with leads. I wasn't going to turn off services this time, but wanted to add a more personal touch. I have a video recorded with behind the scenes of my program & I send a Google drive link (would be amazing if we could attach videos in the conversation so they don't have to click a link!!). I wanted to add in some voice memos as well, is there any way to do this without having to upload it to Google drive & sending a link? If not definitely something I think should be added, all social media have these features!