[pmontra]

A throw away mail is a way to anonymously test a service. Maybe you want only people that commit their real identity to evaluating your service, but maybe you will lose some conversion after an anonymous evaluation. You'll also have less word of mouth.

[chrisjj]

> Maybe you want only people that commit their real identity to evaluating your service

And nor do you get that with an ostensibly non-disposable address either. Almost anyone can sign-up a regular gmail.com address and then dispose of it.

[tntpreneur]

You might be right. It's a decision that should be made by the product owners.

[chrisjj]

Agreed. Many signups go further and require a "business" address which excludes gmail.com.

[chrisjj]

And you'll have a little more bad word of mouth.