There is no such thing as Thunderbird email. Email service comes from email providers and Thunderbird is email client software. Your phone should have an email client on it. Use that to connect to your provider just like you do with Thunderbird.

I have email on my phone with yahoo. How can I check out email with you from my cell phone

Who is "you"? As stated before there is NO Thunderbird email service. What is the provider part of your email address? That would be the part after the @ sign. I can pretty much guarantee that it is not @thunderbird because that does not exist. That info would be a hint to you who your email provider is.

Thunderbird itself is a email client program that runs on your computer and not a service or webmail that you can view in a web browser.

Many email services have a webmail so you can view your email online in a web browser like with Yahoo and Gmail for example.

thanks, that's too bad you can't view it on a web browser like yahoo or gmail.

You are not getting it. Thunderbird is just software that helps you manage your email account that you have with a provider. There is no need for web mail or for your phone to connect to your messages stored on your computer. Setup the email client software on your phone to connect to your providers server and check your mail that way. There is no Thunderbird email. There are no Thunderbird email servers to use web mail to view. Thunderbird is software running on YOUR computer. Nothing more.