If not every row of your file makes it into Mailpro, that's an automatic safeguard protecting your list quality and deliverability.
Pro tip: always check the import report at the end — it lists each rejected row with the exact reason.
The 4 main reasons
| Reason | Explanation |
|---|---|
| Invalid format | Email without @, with spaces or forbidden characters |
| Non-existent domain | Mailpro checks the DNS record |
| Duplicate | Address already in the list |
| Unsubscribed / hard bounce | Blocked to protect your sender reputation |
See the full import detail
- Open Contacts → Import history
- Open the relevant report
- Download the file of rejected rows
- Fix and re-import if needed
More on the import report page.
How to reduce rejects
- Clean your file in Excel before importing
- Remove empty rows and trailing spaces
- Watch out for exports from Outlook or Gmail — they sometimes include hidden fields
- Avoid lists older than 12 months — high bounce risk
Clean lists = better deliverability. Start free with Mailpro and benefit from automatic cleanup at every import.