These are overall mail reading preferences, such as display settings, notification options, and security. Settings that vary per account are in the Mail Accounts tool, described in Working with Mail Accounts, but most of the mail settings are in Mail Preferences.
Mezuak irakurtzeko hobespen orokorrak dira: bistaratzeko modua, jakinarazpenak, segurtasuna... Kontu batetik bestera alda daitezkeen ezarpenak Posta-kontuen tresnan daude, eta Posta-kontuetan lan egitea azalduta, baina posta-ezarpen gehienak Posta-hobespenetan daude.