[protomyth]

I have a weird observation about the friction of e-mail. I think a high percentage of the friction comes from having to think up a subject. It seems that step, if required, forces some extra thought. It changes things a bit if you don't enforce subjects.

[maps7]

How do you need to think of a subject? You can just copy and paste the main part of an email or use an external reference (Jira issue name etc)

[atoav]

I think this is spot on. The subject alone makes it different

[obeid]

I have a boss who often uses the subject to send a usually short and concise message and leave the email blank.