Have the same contacts or products spread over several files, with duplicates everywhere? I'll combine them into one clean list and remove the duplicates (matching ignores capital letters and extra spaces; gaps are filled from duplicate rows where possible). I can also convert between CSV, Excel and Google Sheets, or split one big file into smaller ones. Covers up to 3 lists (about 5,000 rows) matched on one column such as email. Turnaround: 2-3 days. How it's done: the merging is checked before delivery: rows in vs unique rows out, plus a list of merged duplicates for you to confirm. You get: one merged, de-duplicated file, a list of merged duplicates, a short summary, and one round of revisions.