I usually worked with Portable Firefox as my browser. Hyperlinks in emails were opened in it. Then I discovered K-Meleon. And because K-Meleon works much more faster than Firefox I decided to deinstall Firefox and use K-Meleon instead.
However, hyperlinks in email, read with my email reader Portable Thunderbird, are not opened anymore (in K-Meleon). How can I let Portable Thunderbird know that