Why stop there? We don't need no stinkin' emails at all because back in my day, we used to send letters through the post!

Even if you save it as a draft, you'd still need a way to sync it between your devices. Handoff makes it simple and convenient.

Gmail automatically saves emails drafts. Thunderbird might as well, though I'm not sure.

I also have this same experience with Slack.

I often switch between mobile and Linux desktop for these applications, no special software required.

IMAP does just that; save it as a draft (most clients automatically do that anyway) and pick it up wherever.

IMAP is a kludge compared with Handoff.

Now when Linux can do the same thing with a word processing document, with an IM client, with a spreadsheet, with a presentation program, and with my web browser, get back to me.

Does this require using apple specific software though? I doubt it would work if I have an app/program installed on o ly one of the devices.

Handoff can work with third party applications though mostly it’s Apple stuff. One notable exception is you can hand off webpages from your phone to macOS and it’ll be handled by any browser.

Any cloud syncing service will sync files the second you save them. IM clients sync by their nature. Web browsers have had sync capabilities for years.

I've lived in the Apple ecosystem for a few years and Handoff/Continuity can do some impressive things (like the webcam thing of late, or cross device phone calls) that I ended up not using in practice. That's just me though. I prefer the simple way.

When Handoff or associated features don't work when they should, good luck troubleshooting.