Mail quit unexpectedly while using the HockeySDK plug-in

Hello, I haven't seen a good solution for this online. Here is how i resolved this.

I'm on High Sierra (10.13.2)

1) on Finder click Shift+Command+G

2) In the field type "~/Library/Mail"

3) Look for a folder titled "v5" (or it could be a different number)

4) Retitle that folder to something different. For mine I wrote "~2018-01-16-V5"

5) Then relaunch your Mail.App

This resolved my "Mail quit unexpectedly while using the HockeySDK plug-in" after various attempts to fix the issue.

I hope this helps others.

- Jiho