What is the last version of Thunderbird that can be used in Win98se?

I have ver. 2.0.0.24. I have been using that for decades and never had a
need to upgrade. It does all I need, so why add more bloated crap.

I use gmail, and use their SMTP pop mail to get my email to TB. I no
longer have any web access, using ANY browser in Win98. Changing all the
web to HTTPS ended all my use of the web. Actually, losing the web was
not a big problem. Seems everyone is using facebook now anyhow, and I
absolutely hate FB and would not use it if they paid me. So, goodbye
web....

But now I am getting a constant error in Thunderbird that keeps saying I
dont have some security enabled. I looked in the settings and there is
no security enabled, but when I try to change it, it says that none of
them are usable.

I am sure that no versions made in recent years will load in Win98, but
maybe I can upgrade a few versions? Does anyone know if any newer
version will work? (Do they have better security features)?
Personally I could care less about security. All I do is chit chat with
a few friends and none of it has any secretive stuff. But I guess Google
has other ideas. They dont care who suffers, just as long as they can
control the internet. Soon, it will be much more secure, because no one
will be able to use it.

If I lose my email, I am finished with the internet completely. There is
no sense paying for service, when all I can use are the newsgroups, and
as everyone knows, the newsgroups are darn near dead.

Anyhow, I am just wondering if there is any way to upgrade TB. If not, I
guess I'll have to go back to the old fashioned methods of using the
telephone to contact friends, just like i have gone back to using the
books at the library to look stuff up, because I can no longer use the
web.

In a way, it's kind of funny. I was raised to use books to learn stuff,
and use the phone to contact friends. Then we were all given this
amazing tool called the internet to make life easier. It worked great
for about 2 decades. Now it's all been taken away from us. Or at least
from those of us who cant afford a new computer and pay $150 per month
to get high speed internet, which is the only way I can get anything
more than dialup.

And by the way, my flip phone used to have basic internet service. That
too no longer works. So, as far as I'm concerned, the internet is dead.