SheetCleaner LogoSheetCleaner
Back to tutorials
Tag Collection

Marketing

2 tutorials grouped around Marketing, so readers can continue by topic.

operations

Excel Email Deduplication: Case, Dots & Plus Aliases All Covered

Professional guide for marketing email list cleaning: handle case differences, Gmail dot rules, +alias tags. Supports complex scenarios like ZHANG.SAN@EXAMPLE.COM vs zhangsan@example.com, alice+ads@gmail.com vs alice@gmail.com.

12 min readAug 18, 2025
operations

Remove Duplicate Phone Numbers in Excel: 3 Methods

Remove duplicate phone numbers in Excel using a helper formula, Power Query, or SheetCleaner. Standardize country codes first, then keep the newest record.

12 min readAug 18, 2025