User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; rv:1.7.3) Gecko/20040913 Firefox/0.10 I use the -Profile option for both, firefox and thunderbird. If I click Tools > Read Mail in Firefox it ofc opens the standard profile. In about:config there seems to be no option too. Reproducible: Always Steps to Reproduce: 1. Use TB with -Profile 2. Click Tools > Read Mail in FX 3. TB launched with wrong profile
you want to make sure that thunderbird' profile manager does not have "don't ask at startup" checked. We simply invoke the default mail app. Further configuration is unnecessary for the vast majority of users, and we certainly aren't going to put in code to support multiple configurable commandline options.