I need a script / addon for Gmail

need a script / addon for Gmail Description of requirements/functionality: I need a gmail script that will be applied to one email address, which will perform the following actions: 1. For all emails that we forward from one address, we need to remove a pre-filled line that is added by Gmail, which looks like this: On Wed, Aug 10, 2016 at 12:49 PM, John Doe wrote: 2. Also, we need to replace the "Reply to" email address with a new one every time, which will be extracted from the email content. That email address can be found in the email trail and is the email of the initial recipient. Specific technologies required: google apps, gmail Extra notes: Only apply if you've worked on something similar before and can show examples.