Today Evolution only auto-memorizes an email when you do a reply. If you write an email to someone that is not in your address book, the email is not auto-memorized.
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[in french] Aujourd'hui Evolution n'ajoute au carnet d'adresse des adresses mél seulement quand on répond à un message. Si on écrit un mél à quelqu'un qui n'est pas dans son carnet d'adresses, l'adresse email n'est pas automatiquement mémorisée
I don't like my programs automatically remembering things. Sometimes I'll send a one-time email to a support site or something, and I do not want that cluttering up my address book.
I would like to see it with a button to add them, but please don't do this automatically.
On an initial send you only have an email address, why put that into the address book. It makes more sense to add it if you get a reply, that way it can record the email and the name of the contact.