Postcards

Are postcards still popular these days? Do people still keep sending postcards to one another on special occasions? I do not remember when was the last time I received a postcard for my birthday. When I was younger, I would receive postcards a lot more often than I receive them today. I tried to find a postcard mailing service, but it turns out that there’s so many that I do not know which one is the best. I also tried to ask some of my friends about sending postcards, but they were not able to tell me anything I could use to my advantage.