I have version 91.6 and have major problems: 1. It constantly freezes up - Almost every time I try to open an email the error message "Thunderbird is freezing" comes up. Sometimes it will be 3-4-5 minutes. 2. Every time I open it up, it asks for email password for each account. I put password in AND "SAVE" for each email account (4). I know they are there as when I go to settings and check on passwords, they are shown. But Thunderbird will still ask me evrytime. I will enter password and end up hitting "retry" 4-5-6 or more times before it will download my emails. I have wasted hours every day on downloading and trying to read my emails. I have so many folders filled with emails that I need to keep for followup from the last 3-4 years since Win10 would not let me use Eudora anymore or I would switch to Mail or Outlook. I had Eudora for over 20 years and had less problems in total over that time than I have every day with Thunderbird. I have reinstalled program several times over the past few months hoping to solve problem to no avail. To make sure it was not TWC or my computer, I tried Outlook. Whhat I got was instant downloads, no hesitations and instant opening of the email. If I did not hve to keep my old messages, I would switch, BUT, in this day and age of technology, I don't understand why Thunderbird ahs so many problems