At the Banco Santander branches:

To pay cash in, with no minimum amount or limit, it is necessary for your account to be active and to always have the full number of the account where you want to deposit the money.

Branch Locator

At the new Banco Santander ATMs:

With your Openbank Open Debit card you can also deposit money at the new Banco Santander ATMs of which there are currently over 1,800.

You will have the money in your account instantly and available for whatever you need (paying your bills, purchases, transfers, etc.)

Making a transfer:

You can send money to your account by making a transfer from another bank; simply provide the IBAN of your Openbank account. Access the customer area to find the IBAN for your account.