First, right click on Notezilla icon and choose Sync option and create a new Notezilla.Net account. This will sync all your notes with the cloud.
Then go to a sticky note, select left top button and choose Send To->Contact and configure all email addresses as your contacts. Your contacts must approve you before you can send them a sticky note. Once contacts are added and after they have approved you, you can send note to them.
Watch this video for step by step assistance: