You can imagine my delight when I received a phone call from Richard Tyler, Enterprise Editor, at the Telegraph, asking me to feature in an article about new start-ups thinking global. I was delighted to be asked, and here's the story:

I feel bad. One of my best friends has just had a baby. I bought a congratulations card and wrote a lovely note. Then the card sat on the mantlepiece for two weeks. First it was the address: the pain of digging the latest one out of the handful of different address books I own. That done, it’s the lack of stamp. Pathetic really. The wildcat Royal Mail strikes didn’t even come into my thinking. Yesterday, I handed the card to my friend as we met to mark his eldest’s third birthday. It was OK, but I still felt bad. I’m not very good at sending cards, even though I instinctively want to.

Holiday postcards are even worse. I buy one for my Gran but only send it on the last dayl. I am, I discover Carderoo.com's target market.

Serial entrepreneur Rob Eberstein, 36, is launching his latest venture on Monday. While existing sites like Moonpig.com could solve my greeting card problems – it lets you design bespoke cards and send them for £2.99 – Caderoo is the easy way to send postcards to friends and family from overseas.

Eberstein explains: “The vision behind Carderoo is the frustration of sending postcards. You have to find them, find the stamp, then a post box. It’s invariably at the end of the holiday and they invariably turn up after you’ve got back.”

This isn’t a problem for people who delight in writing postcards. But for those that find it difficult to turn their good intentions into action, they can now log on, upload one of their own photographs or access a library of images from Flickr or Wikimedia, chose their typing font, write their message and the address and then press send.

A hard copy postcard is then sent from anywhere in the world to anywhere in the world – initially printing will be done in London but the plan is to hire local printers in other English speaking countries. The price, if you buy 10 postcards, is 99p. If a virtual card will suffice, it can be sent for free to Twitter followers via the Twitpic application, or via email.

“The real confidence I get is if you look at the greeting market in total it’s £1.3bn a year in the UK. The percentage that’s print on demand, like Moonpig, is 1pc of the market. That’s forecast to grow to 10pc over the next few years,” says Eberstein. “We think there’s a really nice market there.”

The ‘we’ includes Julian Guppy, the chief technology officer and former colleague at Zebtab.com – an application that delivers news and video to computer desktops – that was heralded as a bright prospect but has been knocked sideways by the collapse in advertising. It is now in administration.

Eberstein was co-founder of Zebtab and says he has learnt a lot from the experience. “We were getting millions of ad impressions a month [on Zebtab] but in terms of revenue it was nothing. We put in three years of our lives into that. The big lesson is the revenue model.

“Carderoo has a very simple revenue model. We have a really good team; the market looks like being a really great market; it’s fun, which is great; social media is taking off; and it’s got the potential to grow quickly.”

Refreshingly, he’s open about the post-mortem on Zebtab: “Was it really service a consumer need? If a product is withdrawn and dies, do people miss it? If I am honest I do not think we were meeting a need. Twitter came along and did a lot of what we were doing and that was it.”

“Technology moves very, very quickly. You go through business school and you are told these things. For whatever reason you have this dream and vision and everybody gets really excited and says what a great idea. You can’t give up. You have to keep going until it collapses.

He adds: “But now people are being much more realistic. You have to meet a need and have to make it pay.”