A four-year-old girl grieving the death of her mother was delighted to receive a response from beyond the grave after posting her a Mother's Day card.

Ella Lennon, four, from Kilmarnock, East Ayrshire, dropped a card addressed to 'Mummy in heaven' in a postbox ahead of her first Mother's Day without her mum Jennifer.

Then, in an incredibly warm-hearted gesture, a member of staff at Royal Mail sent Ella a letter back from her mum, saying how proud she was of her.

The touching exchange was revealed by Ella’s aunt, Linda Ross, on social media.

Ella Lennon, four, from Kilmarnock, posted her mother Jennifer, who died from cancer four months ago, a card ahead of Mother's Day

Jennifer (pictured) died in December after battling a brain tumour for four years

A member of staff at Royal Mail wrote Ella a heartwarming letter from her mother in response to the Mother's Day card, saying she was 'so proud' and promising she was always watching over her

Linda posted: 'On my sister's 1st heavenly Mother's Day, Ella sent her mummy a card.

'Today a kind stranger from the Royal Mail used their time to reply and make a little girl so happy!

'Her face lit up with the biggest smile. Just shows the amazing people in this world! Can't thank you enough!'

The card Ella sent had a picture of one of Despicable Me's minions on the front, along with the lines, 'You're one in a minion, Mum'.

She posted the card in an envelope addressed: 'To Mummy in heaven, Happy Mother's Day. I love you, Ella x.'

Ella's aunt Linda Ross (pictured) from Kilmarnock, East Ayrshire, shared the letter and card exchange on social media

Ella's card (pictured) had a character from Despicable Me on the front along with the message 'You're one in a minion, Mum'

The response on behalf of Jennifer (pictured top right) expressed how proud her mother would be of Ella. Her family believe it was written by a kind-hearted member of staff at Royal Mail

The response from Jennifer which was penned by Royal Mail arrived at Ella's home two days after posting the card.

It said: 'To my beautiful Ella. Thank you so much for my very special Mother's Day card.

'You're one in a minion to me and I love you very, very much. Millions and billions and trillions is how much I love you!

'You are growing up to be a very clever and special big girl, and I am so proud of you. And even though I am in heaven, I watch over you every day!'

The heartwarming letter was signed off: 'Lots of love, hugs and kisses, Mummy xxx.'

The letter's envelope had a return address of: 'Mummy, 1 Angel Gate, In the clouds, Heaven.'

Ella's father Dean posted the content of the Royal Mail letter on Facebook and received over 100 comments from those whom the message touched

A number of social media users commented on Linda's Twitter post in delight of the response from the Royal Mail

A number of Twitter users commented on the moving exchange.

One person said: 'I just cried at this.'

Another wrote: 'Oh wow I'm sobbing! This is beautiful.'

A third added: 'Omg this is the sweetest thing ever.'

It is understood Jennifer, from Kilmarnock, battled a brain tumour for four years.

Ella's dad Dean posted on social media: 'I would like to thank the kind hearted person at the Royal Mail who sent Ella back a letter from her mummy in heaven.

'Her wee face was lit up x.'

Linda paid tribute to her sister on Facebook at the time of her death saying: 'She was funny and beautiful and always thinking of others. I couldn't have asked for a better big sister.'