Thunderbird can connect to an LDAP server and autocomplete email addresses as you type, but it needs some adjustment for some LDAP servers. One of the LDAP servers that I use regularly returns email addresses like this in the thunderbird interface: username <firstname.lastname@domain.tld> The email address looks fine, but I’d much rather have the person’s full name instead of the username. Here’s what I’m looking for: Firstname Lastname <firstname.lastname@domain.tld> In older Thunderbird versions, setting ldap_2.