I see the value of the ability to recognise such Gmail address variants, and would use it myself to prevent people trivially working around Gmail addresses being on a blacklist email receipt or for service signup.
Sam. On 30/04/2020 09:27, Walter Peng wrote: > Hello community, > > We are running a small website which allow users registration with their > email. > > Many users use gmail's variants to sign up the site, as we know, > foo...@gmail.com is equivalent to below similar: > > foo...@googlemail.com > foob...@googlemail.com > foo....@gmail.com > foobar+...@gmail.com > foo.bar+m...@gmail.com > ... > > Is there a library existing to validate all those variants to make sure > they are exactly the same account? > > Thanks.
