[antr]

I use disposable emails only to signup to services. I later save the email and pwd with 1Password. I've been doing this for a long time.

The reason I do this is because many startups (and non-startups) keep abusing on the amount of email they send you, even if I unsubscribe from their "newsletter" they come up with other non-newsletter emails - and this is just unbearable. I feel like being spammed most of the time.

The advantage of using disposable email is that I have access to the service, I decide when I receive emails and it's a great way to protect my account from being hacked (think of any recent social eng hack a la Amazon, Apple, etc. they couln't do it without your signin email).

A handful of other colleagues do the same thing. If you blacklist users who want to protect their privacy and want control over their inbox all you are doing is blocking (in our case) affluent users.

[Gormo]

Many email services offer disposable addresses integrated with your real email account.

Yahoo in particular has an excellent system for doing this; you can generate disposable addresses by adding a unique string to a base name particular to your account (but which isn't identical to your real address, as it is if you use a '+' delimiter with Gmail). By default, all messages received at any disposable address go to your primary inbox, but you can designate an alternate folder for each of them. Since all of your disposable addresses are @yahoo.com, it's impossible for admins to blacklist the domain.

Sorry if this sounds like a commercial for Yahoo Mail; I'm just very happy with this feature and almost never resort to using Mailinator et al.