You can’t do it for pages, but for posts, you switch the format to Quote on the right side when edited your post. I really need it for pages too, but haven’t got any support….
I see no EMAIL option. Are you using a plugin that give you that option?
I’ve found a few plugins that let me define where the sendmail program is but I need to tell it to use a different program (dovecot) with different command syntax (I assume it’s different anyway).