CSV import for contacts
Upload, map, and tag a contact import.
5 min read Updated 2026-04-24
CSV import handles up to 100,000 rows per file. For larger sets, split into multiple files or use the API.
- 1Prep your CSVUTF-8 encoding. One row per contact. First row is headers.
- 2Create custom fields firstAny column that is not a standard field needs a matching custom field, or it will be skipped.
- 3Contacts → ImportUpload the file.
- 4Map columnsMatch each CSV column to a contact field. Preview shows 5 rows so you can spot misalignment.
- 5Pick duplicate handlingSkip, update existing, or always create new.
- 6Tag the batchAdd a tag like csv-april-2026 so you can find or undo this import later.
- 7Start importProgress shows in the top bar. You will get an email when it finishes, with any failed-row details.