Thunderbird v11 OSX - userChrome, template creation

Assist small business owner with template creation and customization for Thunderbird V11 on OSX. This is a small project for a Thunderbird chrome and config expert. Owner is new to Mac, 25 years on PC, needs productivity from email fast to replicate Windows system. If Thunderbird is bad, tell us why and what is better for OSX. Need ten fast templates for three aliases. This is not a big project for an expert, easy and fast if you know TBv11. Thanks.