Contacts & notes
Importing & merging contacts
Bring contacts in and keep them de-duplicated.
Import contacts in bulk, then keep them clean so each person's history stays in one place.
Merging duplicates
Settings → Contact Management finds and merges duplicate contacts (matching on name, emails, and phone numbers) and consolidates their conversations.
Lead sources
Settings → Lead Sources lets you tag where contacts came from, so you can segment and report on them.