1) are a programmer
2) use e-mail regularly
3) have configured an e-mail client
4) care about how things work
5) have received spam e-mail (including spoofed e-mail)
...It is hard for me to believe that you can believe those falsehoods.
If it was renamed "Things About Email Programmers Have To Repeatedly Tell Designers And Managers" that might be more accurate.
1) are a programmer
2) use e-mail regularly
3) have configured an e-mail client
4) care about how things work
5) have received spam e-mail (including spoofed e-mail)
...It is hard for me to believe that you can believe those falsehoods.