Email
Normalize contact identifiers
Lowercase and trim email values, then flag conservative syntax failures before they are used as contact identifiers.
HubSpot contact import preflight
Clean contact CSVs before they reach your CRM.
Normalize emails and phone numbers, trim stray whitespace, flag invalid contacts and repeated email identifiers, and export a cleaner CSV before a HubSpot import.
Contact import checks that catch expensive mistakes
HubSpot contact imports use mapped properties and unique identifiers to decide whether a row creates or updates a record. Cleaning identifiers before import reduces duplicate and failed-record cleanup later.
Duplicates
Surface repeated emails
Warn when the same email appears more than once so you can decide whether the rows are intentional updates, associations, or accidental duplicates.
Phone
Remove formatting noise
Normalize simple phone strings by removing spaces and punctuation while preserving a leading international plus sign.
How RowSift prepares a HubSpot contact file
Header cleanup and mapping
Common variants such as Email Address, First Name, Last Name, Phone, Company, Company Domain, and Record ID are mapped to a consistent export schema.
Unique identifier review
For a contact import, RowSift expects Email or Record ID to identify records. It reports rows that have neither identifier.
Duplicate review before import
HubSpot can use Email as the contact identifier. Repeated emails are surfaced so you can review whether multiple source rows should represent the same contact.
Local browser processing
The free tool parses and rewrites CSV text in the browser. It does not need to send the spreadsheet contents to a backend to create the cleaned download.
Use a repeatable CRM import workflow
1
Clean
Normalize identifiers and remove avoidable formatting noise before opening the import wizard.
2
Map
Confirm that each CSV column is mapped to the intended HubSpot property, especially unique identifiers.
3
Review errors
After import, use HubSpot's error file and history for records that still depend on account-specific property rules.