The name of any CSV file to be uploaded to your MailUp account must follow one of the following two file naming conventions.
List_Number + Date/Time
<List_Number>_<yyyyMMddhhmmssffff>.csv
...where:
- <List_Number> = the list number within your account (you can see it in your MailUp admin console)
- <yyyyMMddhhmmssffff> = date and time when the file was generated, down to the millisecond
For example:
3_201105031527211234.csv
List_GUID + Date/Time
<List_GUID>_<yyyyMMddhhmmssffff>.csv
...where:
- <List_GUID> = unique identifier for the list in the MailUp system. It can be seen in the MailUp admin console under Settings > Edit Lists or retrieved via API by using the MailUpSend.GetListIdentity() method.
- <yyyyMMddhhmmssffff> = date and time when the file was generated, down to the millisecond
For example:
6418A557-2335-4E7C-B620-5A66B7C8F977_201105020805060203.csv