Traditionally, stamps are affixed to the upper right corner of envelopes. In the past, stamps were covered by hand, but most people used their right hands. It's much easier to work when the stamp is stuck in the upper right corner. Now that technology is developed, the inspection and stamping of letters are computerized. If your stamp is stuck on the back, the electronic eye will pop up your letter and check it by hand. If the postage is paid in full, it will be covered manually. If the postage is not paid, the post office has the right to discard your letter. Local mail or ordinary mail can be sent in a white envelope. If the letter is sent by airmail to a foreign country, an airmail envelope with red and blue edges is used, and an airmail sign is printed on the lower left corner of the envelope, which is commonly used internationally. You can use any white envelope. Remember to post an airmail sign in the lower left corner of the post office and pay the airmail postage, otherwise the post office will treat your letter as surface mail! I hope I can answer your questions and wish you a happy life! 2008-05-23 00:13: 41Supplement: Usually, the sender's name and return address are written in the upper left corner of the envelope. If the letters are lost, they will be returned to you. Everything has its way of operation and laws. If you don't follow this rule, it may affect the front-line staff and do more extra work!

1. Stamps don't have to be stuck on the shelf in the upper right corner ... 2. White envelopes don't have to be used.

I put it all in an envelope.

But if it's not airmail, the envelope won't work well if it's airmail ~ in fact, if it's not used, it's ok ~ it's written with D at the back

The address and stamp can be tied to the front box ~ ~ ~ (if you don't mind comparing with others)

Stick it in the upper right corner

This is beneficial to the operation of automatic "Jane" messenger. If you don't send a message, an automatic system may "west" your letter out of Lebanon and then distribute it by manpower. It will delay the rest of the time. It's absolutely okay to use doll envelopes.

You don't have to send the letter in a white envelope.

Tie an envelope with a doll ... (It is best not to have a doll in the official document) ... ok ga

I tried it before because the cover of this letter is too flowery.

The address and stamp are at the bottom of the envelope.

Is du okay?

Send it back, ar ... I once received a letter.

There is a stamp in the lower right corner ... but if you can, you'd better follow the formal letter format.

Stick the stamp on the upper right corner of the envelope ... it's safer ... P.S. You can try sticking the stamp in other directions.

But remember to write the return address.

You can pick up a letter in case it can't be sent ... if it can be sent.

Language is better than I know, ar ... so special, ar ...

Reference: myself