Since Google Photos is going to end their free unlimited photo storage in June, you may be looking for a new cloud to back up to freely. If you're a Prime member, Amazon has unlimited storage via the Amazon Photos app. However, Shutterfly also features an unlimited free photo storage service, complete with sharing abilities. It doubles as a convenient place to draw from when creating personalized Shutterfly gifts to be printed. They also promise to never delete user images, which makes for good peace of mind.