Although postcards are now virtually obsolete in daily life, I can remember a time when they were used to enter competitions, to cast votes in polls, and to let friends and family know you’d reached your holiday destination safely.
But when I’m going away for a day or two, I like to maintain the last of those traditions. In most cases, I know I’ll arrive back home before the mail does, even when it’s within Great Britain, but it doesn’t diminish the surprise for the recipient.
A typical card measures around four inches by six, although there are wide variations, with the front featuring a picture or design. The back is split into two equal sections, so your text has to fit into that left section because the address and the stamp will take up the right-hand side. You can also buy books of plain postcards where the address and stamp go on the front, allowing use of the entire rear side.
Still, the fixed format forces you to pick your words wisely or to minimise the size of your handwriting. The inventors of the SMS initially chose 160 characters as the limit based upon those restrictions.
In the earliest days of mobile messaging, each one typically cost between 5p and 10p to send; those figures are not adjusted for inflation. Some handsets supported longer messages, but each block or partial block of 160 characters was charged separately.
Despite this, an SMS easily undercut the price of a stamp in the second half of the 1990s – shown by this table from The Great Britain Philatelic Society – especially as you didn’t need to buy a physical postcard either.
The cost of SMS and similar messages today is negligable. Most phone subscriptions have some element of inclusive or unlimited allowance, putting the higher cost into perspective. On a day trip to Birmingham yesterday, I sent just two cards, but they cost me 87p apiece in second-class stamps.
Knowing I might not have a chance later in the day, my intention was to write them both on the flight and post them at the other end. I forgot to take them out of my bag until we were almost ready to land, but they’re both now safely in the post awaiting delivery.
Gavin Cameron 
I received your postcard – thank you. Wow at you flying there but guess it’s quite far from Scotland, though. I used to send postcards out more often back in the day but don’t really from a holiday anymore. I did recently send one to a penpal from the US, though. I also have a few of those blank competition postcards that have been knocking about for 20 years, at least.
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In the original version of this post, I had a paragraph about how flying costs a fraction of what it would be on the train, yet expels far more pollutants in a shorter journey time.
Anyway, I’m glad you received the postcard, and I look forward to hearing how you use the rest of yours.
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