Does it matter? Uppercase or lowercase in all of the letters? My spouse is very concerned that his email will not be properly received now due to a recent publication. It was recently printed in a organization's directory (with his permission) that (they) used uppercase for the first letter at the beginning of his email address instead of "all lowercase" as he (had provided it that way and) always uses (both "to" and "from" for a great many years with our AOL account. Should we contact them (the organization) to change it (in their next newsletter) and (tediously) notify the other members - or will the mail all go through without a hitch? It's very important not to miss any email or appear to neglect appropriate replies, so we appreciate any input or suggestions.