STAFF at Warrington Mail Centre have been praised online over a thoughtful letter sent to a young girl trying to write to her dad in heaven. 

A picture of the letter sent by work area manager A. Jones has gone viral after the young girl's grandma shared the kind note on Facebook. 

The letter reads:

"While we've been delivering your post, we became aware of some concerns. 

"So I just wanted to take this opportunity to contact you about how we succeeded in the delivery of your letter to your dad in heaven.

"This was a difficult challenge to say the least however after avoiding stars and other galatic objects en route to heaven..please be assured your letter to your dad has been delivered.

"I know how important your mail is to you.

"We will continue to do all we can to ensure the delivery to heaven safely." 

The touching note has had thousands of shares and comments on Facebook with many people praising staff at the centre on Orion Boulevard. 

One user added: "How amazing. Great job well done."

While another added: "This brought a tear to my eye."