you’re able to bring all this utility to yourMozilla Thunderbirdemail by importing it into your Gmail account.
It also turns importing email into a simple drag-and-drop action.
initiate the folder containing the emails you want to import.

Highlight the messages you want to import.
(If you want to import all messages, pressCtrl+AorCommand+Ato highlight all messages.)
Right-click one of the messages that you want to copy.

Why Not Just Forward Your Messages?
you’re free to forward the messages, but this is hardly an elegant or fully functional solution.
