To find out more about Save Emails as PDF, click here.
To install Save Emails as PDF, click here.
To start wizard to export emails to PDF, click here.

Here are short step-by-step instructions on how to merge all Gmail messages from a label into one PDF:

  1. Start Save Emails as PDF wizard by going here
  2. Select Back up or save email messages to PDF:

  3. Select the label you want to save:
  4. Select the options. You need to select the following option: