DELIVERY CHECKLIST — run through this before you send any cleaned file

THE NUMBERS
[ ] Rows in, minus rows removed, equals rows out
[ ] I can explain every removed row (empty, exact duplicate, repeated header, duplicate email)

THE FILE
[ ] It opens in Excel or Google Sheets with no shifted columns and no garbled characters
[ ] Every column the client sent is still there, with the same name (unless they asked for a rename)
[ ] Any column I added is named clearly and mentioned in my delivery message

THE CHANGES
[ ] I compared 10 random rows with the original, cell by cell
[ ] I checked 5 of the rows removed as duplicates and they really are duplicates
[ ] Dates that could be read two ways (03/04 = March 4 or April 3?) were confirmed with the client
[ ] Phones, dates and emails I could not recognize were left unchanged and listed, not guessed

THE MESSAGE
[ ] Summary: rows in, rows out, what was removed, what was standardized
[ ] A list of anything that still needs the client's decision, with row numbers
[ ] What is not included (for example: I checked email format, not whether the mailbox exists)
[ ] How long I keep the file and how to ask me to delete it

BEFORE I HIT SEND
[ ] Right client, right email address, right attachment
[ ] Two attachments: the cleaned file and the change report
[ ] My working copies are stored only where I said they would be