Send Email with Options allowing others to click the options

[Anonymous]

Hi

Im feeling a little bit like a fool. I dont know what Im doing wrong, but heres the situation:

My flow has the action "send email with options"

The user who triggers the flow, will send this "send email with options" to his boss.

The boss has to click one of the options to respond.

I found that the user can go into his outbox and click one of the options himself! Isn't this a conflict? I mean the user could have "approved" a purchase of an expensive item before his boss could even do so. 

Thanks for your help