The absurdly high 5-to-1 star review ratio is very well earned.

Very reliable. They continue to support all the aliases you set up on a paid plan even after the plan ends! You just won't be able to make new aliases if you already have more than the free plan's limit. But this policy alone puts so many other aliasing services to shame, and it makes me want to give them more money.

It's absolutely painless to point it at a different email address if you switch email providers, too.