As the (previous) operator of a reasonably sized community forum: A prominent user of disposable emails is griefers and trolls who use it for ban evasion. Prev

As the (previous) operator of a reasonably sized community forum: A prominent user of disposable emails is griefers and trolls who use it for ban evasion. Preventing disposable email registration pushes the bar just that little bit higher that it really helps with these kinds of users. In fact, this is the reason we even had email verification at all (it used to be effective against spammers, but those days seem to have gone)