The video below offers an overview of creating an initial email template and document template for a spreadsheet with the MergeFactory installed.
Email Merge Tips
The default Email Body setting is plain text, which means the email will match the way the you type the message into the Email Body text box. This option is good for quickly creating basic email templates but is very limited on formatting options. If you need more styling options, the "More Options" section will allow you to import an email draft you have created in Gmail. This allows you to utilize your Gmail signature and basic HTML formatting available in the Gmail editor. If you have knowledge of HTML, you can create your own emails to take advantage of embedded images, tables, responsive design and then copy and past the raw HTML into the Email Body text box.
Email Merge Extras
This video shows some extra features, how to import a draft from Gmail, and how to attach Google Drive ID's.
Doc Merge Tips
The most important step is to correctly copy the Doc ID of your Google Document template. After you have saved a new document template with the correct details and it is in the "Document list for this sheet", it is recommended that you click on the "test link" for the document template. This should open the correct document template in a new window. If it does not, you will always receive an error when trying to process a "Create Document" merge. Please ensure that you have the the correct string of characters in the Doc ID field. Click here for a larger image of what area to select the Doc ID from the URL.
Document Template Tips
Document templates can use all the formatting available in Google Docs. The document header and footer areas can have column data and header data markers, but will only merge data for the first selected row when the Doc Output Type is "One Doccument" as the header and footer will be the same for every page.
Email Attachment ID Tips
Below are images of various G Suite document URL's with pointers to reference the beginning and ending point of the Doc ID of each type of document. Email attachments are references to Google Drive file ID's in a comma separated list. This will convert Google Docs, Sheets, Slides and Drawings to PDF files and copy and send other types of files as an attachment.