If they know this case. In other email services dots are usually not a junk characters.

Yep, that what I was trying to say 😄 Been using that feature for years.

Gmail allow using a + to create faux-labels

I wonder how they handle gmail addresses with dots as you can put dot in anywhere and it still will redirect to your email.

I’ve setup (for few services which don’t allow + sign) emails like foobar@gmail.com, foo.bar@gmail.com, fo.o.bar@gmail.com and they all come to my inbox.