It's pretty easy to get a message to someone in the 21st century, be it by text, email or Facebook. For a more unusual way to send a greeting, take a look at Imperial Telegrams.
Pay £10 and you can send something like the above. Deliberately designed to represent old telegrams, your message is typed on a 1940s typewriter before the card is decorated with vintage stamps and date stamped. The card is then put in its own special envelope and then in a general envelope and before it is finally dispatched through Royal Mail.
It's certainly an attractive and unusual way to send a special message. One small negative though: you are limited in the number of characters your message can contain. Though maybe in these days of Twitter that's not so much of a problem!
Find out more online
A lovely idea, but I have tried to send a few this past week and they have all been refunded.
Apparently this website is not taking any more orders, and the refund redirects you to http://www.notonthehighstreet.com (search: imperial telegrams), where you can still send a similar telegram but not specify the delivery date (which defeats the object a bit for me!).
…quite lovely too!
http://www.notonthehighstreet.com/imperialtelegrams
Just wanted to add, I did order one of the telegrams from http://www.notonthehighstreet.com; and their speedy turn around, helpful emails, and the postal service meant that it arrived on the day I wanted anyway! Happy to recommend!