I’m confused

inbox too large- freezes thunderbird

I have been running Tbird with no problems for some time now. However, I was creating a new gmail account on thunderbird, and when it started loading INBOX, the program freezes. I am unable to load thunderbird at all- even safe mode.

After checking gmail through firefox, I have discovered that the gmail inbox had about 14,000 messages in it. I corrected that through the browser (deleting about 13,990), but Tbird still freezes when it starts to open INBOX.

Is there any way to start Thunderbird in an offline mode? If not, is it possible to delete an account without starting Thunderbird? I need to save the other email account (messages, address book, etc.) but I have no reservations about deleting the gmail account & starting over.
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