4 min read
Duplicate lead handling
Avoid sending the same person repeated outreach.
Overview
Duplicates can inflate counts and create a poor recipient experience.
Recommended workflow
1
Check for duplicate emails before upload.
2
Review importer warnings.
3
Keep one canonical row per email.
4
Avoid overlapping campaigns for the same segment.
5
Stop or remove duplicates if found after launch.
Tips that make this work better
Tip
Deduplicate by normalized email address.
Tip
Keep source fields so you can trace duplicates.
Tip
Check duplicates across active campaigns, not only one CSV.
Common mistakes to avoid
- Using different casing to bypass dedupe.
- Uploading the same list into several campaigns.
Done well, this should leave you with
A cleaner Outlio setup, fewer avoidable campaign issues, and a more reliable path from setup to replies.
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