Actually, in the case of email, what happened with French is a case-study of how a living language works:
- A new thing appears (electronic mail), and through common shortening ends up being named email for English speakers.
- Among many new users of internet are the French who start taking advantage of this new tool. Most of them not being pedant linguist, they don't particularly care about how they name it, they just need to use a word that's both meaningful and non-confusing. Hence, at the start, 'email' works fine.
- Very quickly, again for the sake of simplicity, 'email' gets shortened into 'mail'. People understand what email is (and the word itself), but since the word 'mail' is English and in no way close to its French equivalent (courrier), there is no risk of confusion.
- Enter the linguists invoking the need to stay within the parameters of French, and so to create a specific word that arises from French roots : 'courriel' (the exact counterpart to email : Electromic mail ; Courrier Electronique). That's something that worked in the past, and I actually think the word "ordinateur" (the thing that puts into and rearranges order) is actually a better description of what the machine is than the English 'computer'. However, contrary to what happened 20 years before, global communication interferes with the attempt, and the word 'courriel' has never really caught on (except in some official writings) in France. I don't know about Quebec.
- A last ditch attempt has been made, following the idea that there are no diphtongues in French, the Academie has tried to make people write mail 'mel'. Of course, the reality is that, although it may be true of the official standard French (supposed to be that of the Versaille area), there many regional variations of accent where diphtongues do appear, and I hear as many 'mel' as I do 'mail' in everyday conversations (I won't bother with phonology symbols)
- End of story, 'lo and behold, there is a new word in French, which describes something very specific (electronic mail), and that word is Mail. It may be a while yet before the final official spelling is accepted as such.