I worked with someone who did. He came in at 6 AM, sent off an email, and left at 6:15.

I don’t blame him, as our employer has walked out 25 year employees with no notice.

My employer has done the same. They have done more than one round of layoffs, and it's always the same - you get called into a 1-on-1 meeting, and you never return to your desk.

Business runs on email. I would prefer to be laid off via email.

How else would you resign then writing an email? Are you writing a piece of paper? Written seems much more professional then just verbal, leaves no doubts. Sure, you can tell before in person but email seems the best way.