A grieving Missouri dad has thanked Facebook from the bottom of his heart for answering his desperate plea to see his dead son's "look back" video.

John Berlin reached out to the social media network recently begging to see the 60-second automated clip for his son, Jesse, who died in 2012 at just 21.

The family were unable to access Jesse's Facebook account and so Berlin took to YouTube to ask the network to let him see his son's personalized video featuring special moments including his most liked and shared photos and posts.

The look back videos were introduced as part of Facebook's 10th birthday celebrations recently, providing each of the site's more than 1 billion users a collage of their life on the social media network.

Berlin's YouTube appeal posted Wednesday soon went viral, with more than 700,000 people watching the video in its first 24 hours online, and it wasn't long before it caught the attention of Facebook.

Jesse Berlin Look Back Video "Official Facebook." Courtesy John Berlin / Facebook

Facebook responded on Thursday saying it would grant Berlin's request and it took only a day for the network to get back and send the video. Typically, Facebook disables the accounts of users who have died, but said in a statement on Thursday that the plea "moved us to take action."

The network also said it would reconsider its policies on information posted by users who later died.

"First of all I just want to thank everyone for all the shares and support," Berlin wrote on his Facebook page on Friday in announcing the release of the video. "We couldn't have done this without you. This is the official Facebook video of my son Jesse Berlin."

In another post Berlin wrote: "From the bottom of my heart and everything that I am, I thank you Facebook."