The postcards will be free to send through the postal system to anyone across the island of Ireland.
Five million cards have been made by An Post to be delivered to households across Ireland.
Each of the country’s 1.8 million households will receive two postcards in the coming weeks. Extra cards will also be available for people to pick up in their local post office.
An Post CEO David McRedmond advised people to “let [others] know you’re thinking of them”.
“Write to your grand-parents or older relatives and friends who are self-isolating; write to someone who is living alone or who could do with a boost,” McRedmond said.
He advised sending a card to cousins, friends, healthcare workers and other people continuing their work during this time.
“Then pop the postcards in the postbox when you’re out for a walk – there’s no need for a stamp. The postmen and postwomen of Ireland will deliver your message free-of-charge to your loved ones,” he said.
The cards don’t need a stamp and are free to send anywhere in the island of Ireland.
People at the moment are being advised to socially distance themselves from others in an effort to slow down the spread of Covid-19.
Visit the HSE’s website for further advice on social distancing and protecting yourself and others from the coronavirus.