The best tool for each data-cleaning job
Every cleaning task has a best-fit tool. These guides lay out the criteria and compare the options honestly — including where Sigmera is the right call and where it isn't.
Best tool for preparing a mail merge
How to prepare a mail merge list that does not go out wrong — Word with Excel, Gmail mail merge, and the in-browser pass that fixes the recipient file first.
Best tool for merging spreadsheets
The best ways to merge spreadsheets compared — Excel Power Query, Google Sheets IMPORTRANGE, csvkit, and the in-browser pass that cleans the combined file.
Best tool for splitting full names in a spreadsheet
The best tools to split a full-name column into first and last name — Excel Text to Columns, Google Sheets SPLIT, and a no-upload browser splitter compared.
Best tool for formatting phone numbers
Best tools for formatting phone numbers to E.164, compared on country handling, leading zeros, and whether your contact list gets uploaded anywhere.
Best tool for cleaning an email list
Best tools for cleaning an email list, compared on dedupe, typo fixing, and deliverability — and which upload your list versus keep it private.