Can I delete subscribers?

Yes, it is possible to delete contacts from your SendinBlue account.  To permanently delete a contact or multiple contacts from your database, go to the "Contacts" dashboard within your SendinBlue account.

In the first drop-down menu titled "All Contacts", select a list or search for the contact(s) within your full list. You can add a search condition by clicking on "Advanced Search & Segmentation". For example, you can select "Email" "similar to" "" and click on "Search".

Check the box to the left of "Email Address",  and then click on "Actions" and "Delete permanently".    


Further reading