4 Answers

Take the letter with the gift card to your local post office.  Give the letter (after waiting in line) to the person behind the counter.  They will weigh, measure and enter information into their computer system... the system will then prompt the postal employee to advise you on which way you can mail your letter and also prompt the employee to ask you if you would like insurance or a tracking number or both.

You choose, you pay and the postal employee sticks your letter with gift card in the appropriate bin for delivery to your friend which usually takes a week to 10 days.

If you are lucky they will smile and wish you a nice day, just like I am doing right now.

Believe it or believe it not! we have a postal service here in 'Merrie Olde England' just like they do in the colonies. Sir Roland Hill (born 1795 in Kidderminster, Worcestershire) invented the worlds first postage stamp in 1837. Depending on collection and delivery times your friend should receive his letter within a week.

You need to go to the post office and send it airmail. Do not address it as when you get to the post office, they will be sticking this mailing label on it covering anything you wrote on the envelope. Insurance is optional. Mailing time is dependent on what rate you pay. It's not that scary, really.  Just take it all to the post office and the clerk will help you. 

The letter will be 'popped' through his letter box by the Postman just like the USA.