Send your email right to the other person's spam
Confession. This vaguely reminded me of something (now admittedly, terrible) I did way back in highschool to give myself a bit more time on an assignment: submit a corrupted docx by putting in some random bytes in the file.<p>This would give you time until the teacher would get to grading (and opening) the file at which point you’d hopefully have finished.<p>Learning not to procrastinate as much turned out to be the better life skill.