A google app script with a loop and a mail function

General information for the business: We report monthly details to national accounts
Kind of development: Customization of existing program
Num. of modules: 2
Description of every module: module 1; I have made a google sheet with all the sum formulas in. What i need now is some scripting writing to "on click" take row of a data (three at a time) and email them to a static email address (a different one for each contract).

module2; after the emails i want a script that "archives the data and leaves the spreadsheet blank (withformulas) to be filled in for another month.

optional. Have another tab with the email addresses in for easy edit.
Description of requirements/functionality: @ to split the data into groups (three rows at a time) and email them to a specific address (include top header rows in all emails)

@ to archive the data each month (when the function is run) to another file

@have a tab that lists the email addresses or a cell location in the spreadsheet for easier editting
@populate the data into a doc doc and email the link instead of putting it in the email body.
Specific technologies required: Google Apps Script
OS requirements: Windows, Other
Extra notes: All files are google sheets files which i can share with you on take up of the job.