You will be informed about the decision by the police, or the Finnish Immigration Service will inform you about it by post.
You must be in Finland in order to receive a decision on your extended permit application.
Some decisions will be sent by post with an advice of delivery. Read more about collecting your letter on the Advice of delivery page.
If you are granted a residence permit, you will receive a residence permit card.
If you receive a negative extended permit decision, you may be deported from Finland.