When editing an e-mail address the e-mail addresses are case folded to lower, i.e. John.Doe@example.com is transformed to john.doe@example.com. RFC 2821 (http://www.ietf.org/rfc/rfc2821.txt) says about this: "The local-part of a mailbox MUST BE treated as case sensitive." This causes problems for example, when KMail is looking up from-addresses from emails in the addressbook in order to display the picture of the sender. If the from-address contains capitals the lookup fails. Reproducible: Always Steps to Reproduce: 1. Start KAddressBook 2. Edit or create a contact 3. Add or change an e-mail address so that it contains capital letters 4. Click "O"K Actual Results: The e-mail address is transformed to lower case. Expected Results: Either: The e-mail address should *not* be transformed to lower case but remain as typed in. Or: The local-part of the e-mail address remains as typed in, the domain can be case folded to lower.
This bug has only been reported for versions before 4.14, which have been unsupported for at least two years now. Can anyone tell if this bug still present? If noone confirms this bug for a Framework-based version of kdepim (version 5.0 or later, as part of KDE Applications 15.08 or later), it gets closed in about three months.
Just as announced in my last comment, I close this bug. If you encounter it again in a recent version (at least 5.0 aka 15.08), please open a new one unless it already exists. Thank you for all your input.