If you would like to know how many emails you have in your gmail, yahoo or any other POP3 account use Report option. The report is awailable in several formats: TXT, PDF, XLS, CSV, HTML. It will show you the senders, date and time, subjects, bodies, attachments and other infoo you may want.
To get a report on your emails download Total Webmail Converter. Run it. Select the email account and press Report button in the upper menu. Then you select the format of your report and the destination folder. In few minutes you get the report with all the data about your emails!