Latest Mailing Database
Import Subscribers Without Losing Status or Source
An import should transfer usable records without changing what the contacts’ status means. Prepare the file and the receiving system’s rules before uploading. A successful upload is not the same as an audience ready for every campaign.
Prepare the source file
Keep a controlled version with clear column names and the required fields. Check encoding, blank values and duplicates according to a documented rule. Preserve source and subscription evidence in an appropriate system rather than removing it to make the file easier to upload.
Map fields and status deliberately
Confirm which audience or list receives the records and how existing entries are updated. Keep unsubscribed, non-subscribed and subscribed states distinguishable where the platform supports them. Do not turn an uncertain or withdrawn record into a subscriber merely because a default option is available.
Review the actual import workflow
Use current documentation for the service you operate. Mailchimp’s import guide describes several input methods, field matching and marketing-status choices. The old screenshots on a different application should not be treated as instructions for every platform.
Check the result before sending
Compare source and result counts, investigate rejected records and inspect representative updates. Confirm relevant exclusions survive later imports and automations. Keep the source version and import report so a disputed change can be traced and corrected.