[Feature Request] Case insensitive input

[OllieJC]

Currently, [email protected] will result in an error.
Allow different case and then change to lower - for former, I think adding A-Z to the regular expressions will work:

re-request-an-aws-account/app/lib/email_validator.rb

Line 13 in b491e3c

/\A([a-z.\-\']+@digital\.cabinet-office\.gov\.uk,?\s*)+\z/,

Like: /\A([A-Za-z.\-\']+@digital\.cabinet-office\.gov\.uk,?\s*)+\z/,

[philandstuff]

Allow different case and then change to lower

Is this the right behaviour? It seems like it makes assumptions about how our email is managed... (I think with G Suite it's fine, I don't know about cabinetoffice.gov.uk though)

[OllieJC]

@philandstuff technically the local part is case sensitive and the domain is insensitive. We don't have to convert to lower case, but we should allow any case or at the very least tell users to use lower case (if that's what we're suggesting?).