Hi Kim, Firefox has some bugs related to breaking longer blocks of content across page boundaries when it comes to certain style rules pages can use to lay out their content. In those cases, Firefox tries to keep as much content together as possible, which can force it onto a new page. It also may omit everything after that first full page. This definitely has been seen with Yahoo! mail (and the various companies that use the Yahoo! platform).

I recently posted a workaround using one of my add-ons (https://support.mozilla.org/questions/1419123), but I hope you get some other suggestions as well.

Hi Kim, I just read a similar report for the Thunderbird email program (i.e., not the Firefox browser). If you are having this problem in Thunderbird, a moderator can move your question over to that forum, and here's the thread I just saw:

https://support.mozilla.org/questions/1419956