I typically use a rando address @mailsac.com but then I have to take the 3 steps to visit, enable links, click links. With this tool, I'm saved those 3 steps. Keep in mind, this is strictly for throw-away accounts that require registration
I think this was a nice experiment and still usable for many services.
guerillaemail+myusername-mypassword@gmail.com
As others have clarified, only for complete throwaway accounts obviously. I tested '-' and '!' and those characters appear acceptable as the delimiter. ':' gives a very strange error on send when using gmail.com. Also imagine you'd lose some letter casing along the way.
Really just a fun and terrible idea!