Yes, to me they are different. Temp email users could see my email, and ignore it. A real email user could see the email and ignore it. While the outcome is the

Yes, to me they are different. Temp email users could see my email, and ignore it. A real email user could see the email and ignore it. While the outcome is the same, for me it's a matter of intent. A disposable email address feel like "I don't trust you, go away, you are not allowed to talk to me". Great. I understand, and being selective with your trust is good. But I'm not some random person walking up to you on the street and saying "give me your email address". You came to me, and you are asking me to give you something (in this case, an analysis of your website's front-end performance issues). In return, I at least want the opportunity for my email to rot in a place that might actually get your attention :-)