Is there a (simple) way of closing a stellar account and be able to send to another account the 20 XLM deposit?
You can use the Account Merge operation to do this.If you aren't a coder, or if you'd prefer a quick process of executing the operation, you can use the Stellar Laboratory.
1)
Build the transaction. You'll need to enter your pubic key for the Source Account and fetch the transaction sequence number. Enter the new wallet's public key in the Destination field.
2)
Sign the transaction: copy the XDR code at the bottom of the page and import it in the
transaction signer. Sign it with your secret key of the original account.
3)
Submit the transaction: paste your transaction enveloped (signed) into
Post Transaction. Click submit and confirm that the transaction goes through.
Hope this helps, and feel free to follow up or DM me if you have any questions.
Sorry for the DIY process; In order to stay focused on our core mission and encourage community ownership of the ecosystem, we aren't significantly developing the
account viewer. Instead, we’ll continue to improve open-source developer tools so that participants in the ecosystem can build a variety of new services