Duplicated contacts should be avoided in order to keep your database clean and enriched. The solution for this challenge is using an individual identification number for each of your users or contacts. We call this parameter «user id» and we recommend using the contact or user email as the primary option.
Before uploading a database directly from an Excel or a CSV file, create in your spreadsheet a new column with the name «user id» and copy/paste the email column into it. Please see image below as example.
Duplicate email column and name it User ID.
If your contacts are provided from our API or SDK, please make sure that the «User ID» parameter is been sent and received correctly.
After creating or receiving the user id correctly you are now are now ready to import your files in XLS or CSV format into your PUSHTech account here.