Ask HN: Case sensitive email provider?

2 pointsshusson2 comments

Does anyone know of a email provider that treats the email username part of the address in a case sensitive way? e.g <username>@domain.com

The RFCs are very specific that e-mail addresses should be case preserving but not case sensitive.

What is the use case here for violating the RFCs?

hmm my understanding of Section 2.3.11 [1] was that the email username must be case sensitive. What part of the spec states that it is not?