Creating A Mailchimp Subscription Form and Email Invite using AppleScript

Mail-Merge-Template.scpt

set mol_list to {}
-- This will ask you to select a file containing the intended recepients and their emails --
-- I also include in this file information needed to link to an attachment --
set theFile to choose file with prompt "Select a text file:"
set theFileReference to open for access theFile
-- Note that the line end here is an old Mac return (not MSFT carriage return) --
set theFileContents to read theFileReference using delimiter linefeed
close access theFileReference

-- Now parse the file that was selected. Here I'm parsing a tab-delimited file. --
set text item delimiters to tab
-- Loop through the file one line at a time --
repeat with i from 1 to count of theFileContents
	set theLine to text items of item i of theFileContents
	copy theLine to the end of mol_list
	-- this identifies each column in the tab-delimited file --
	set full_name to item 1 of theLine
	set first_name to item 2 of theLine
	set last_name to item 3 of theLine
	set middle_name to item 4 of theLine
	set email_add to item 5 of theLine
	-- specify the location of the file to attach --
	-- here I'm pasting together information from the tab-delimited file to point to the file for this particular recipient --
	--set file_attach to "Macintosh HD:Users:USERID:file_" & stid & ".pdf"
	-- Set the message, again pasting together info from the recipient file --
	set message_content to "Dear " & first_name & ",

<-- Insert Content Here -->
    
https://brightdigit.com/subscribe?FNAME=" & first_name & "&LNAME=" & last_name & "&EMAIL=" & email_add & "


<-- Insert Content Here -->
    
Thank You,
Leo
https://twitter.com/leogdion
	"
	
	-- Now push this to Mac's mail software
	tell application "Mail"
		-- Create a new message with the message above and the subject --
		set theMessage to make new outgoing message with properties {visible:true, subject:"Find Out What's New With BrightDigit", content:message_content, sender:"leogdion@brightdigit.com"}
		-- Set the address for this recipient --
		tell theMessage
			make new to recipient at end of to recipients with properties {address:email_add}
		end tell
		
		save theMessage
		
	end tell
	
end repeat

Mailchimp.js

var urlParams = new URLSearchParams(window.location.search);
document.getElementById('mce-FNAME').value = urlParams.get('FNAME')
document.getElementById('mce-LNAME').value = urlParams.get('LNAME')
document.getElementById('mce-EMAIL').value = urlParams.get('EMAIL')