CSV Email List Deduplicator
Removes duplicate email addresses from a pasted CSV list. Case-insensitive by default. Optional domain-only mode (one email per domain) for ABM list dedup.
name,email John Smith,john@example.com Jane Doe,jane@example.com Bob Jones,bob@example.com
Done. When the email goes out, see what happens to it.
Outsolvi tracks email after you hit send: opens graded as a person or a machine, link clicks, and replies, in Outlook and Gmail. From $7/user/mo billed yearly, 14-day free trial, no credit card.
Track your next sendParses pasted CSV, identifies email column, dedups by normalized email or by domain depending on mode. Returns the cleaned CSV ready to copy back.
Before importing a list into a sending tool. After merging multiple lists from different sources.
FAQ
What if my CSV doesn't have an email column header?+
The tool auto-detects which column contains emails by checking for @ characters. For unambiguous mapping, paste CSV with a clear 'email' or 'Email' header column.
Keep going
Articles, glossary entries, and other tools on the same topic.
Nate built Outsolvi after watching every email-tracking tool he had ever used lie to him about opens. Outsolvi grades every open as a person or a machine, in Outlook and Gmail, so the number on the dashboard is one a rep can actually act on.
We update these pages when the underlying mechanics change. new mailbox-provider rules, new tracker behavior, new measurement gaps. The dates above are real revisions, not auto-touches.