Appending on every run turns a tidy base into six copies of every row. Here is how upsert works in Airtable, and how to choose a merge key that holds up.

Every major Sheets data tool is an add-on you install, authorise and keep updated inside the spreadsheet. Here is how to schedule the same imports without one.

Mailchimp's reporting lives one campaign at a time. Here is how to get opens, clicks and bounces for every campaign into Airtable, updating on a schedule.

As your stack grows, so does the job of keeping data in sync. The practices that hold up when nobody on the team is a data engineer.