Action profile:sending email and remainder alarts after 7 days

Hello experts,

Greetings,

                     I am in situation to complete these object ASAP.

Object     1.Complaint auto acknowledgement mail to be sent to customer .

               2.Physical Inspection Report mail.

               3.Quotation Reminder Mail and remainder alerts after first week and second week .

It will more be helpful if somebody shares any document or approach to fulfill these tasks. My ID: nazma.sap369@gmail.com .

I am quite new to this topic and I tried with searching in Google couldn't find end to end approach.

Thanks&regards

Nazma.