Moving contacts--Thunderbird to Gmail
To import contact from Thunderbird first save the contacts in your computers then import it to Gmail.Saving ContactsGo to thunderbirdSelect WindowClick on Address Book from the menu. Select the Personal Address Book or any other address book in the Address Books list. Select ToolsClick on Export from the menu. Select Comma Separated (*.csv) FormatChoose a file name and save it. Mozilla do not add the column headings that is needed by Gmail .TO add itOpen the exported .CSV file in a spreadsheets program like EXCEL Add the following correspondly as the top line "First Name,Last Name,Name,Email Address" and other details that is present .ImportingGo to Gmail Go to ContactSelect import contact (next to export link )Now upload ".csv" file that you downloaded.To import contacts from other Click here To export contacts Click here