Q&A for How to Send an S.A.S.E. (Self Addressed Stamped Envelope)

Yes, you can. It's usually better if the return envelope is a little smaller, however.

If you forget to put a stamp on your envelope, then it will be returned to you within a few days. You can then add a stamp and resend the letter.

Put 2 stamps on it! Detach stamp from stamp book. Place the stamps on the upper right corner of a standard size envelope. When in doubt, ask a postal worker how to do this.

The USPS should still accept these envelopes, even if the stamp is in the lower right corner. It's possible that the letter will be processed by a postal service worker rather than automated processes, which could result in longer delivery.

Yes, you can! It's final scan will typically be "Delivered to P.O. Box" or "Held for Receiver Pickup" depending on options selected and size. If you have more question, consult your local post office.

You would need UK stamps as USPS stamps are not valid outside the US (except for International Reply Coupons).

It depends on the receiver's needs. If they don't specify any requirements, you won't need to write anything. They might ask for additional information, which you should include in a note with your SASE.

Typically, people put $1-2 USD in the envelope. This should, in most countries, cover the post stamp expenses. I would double check online though as it's different from country to country.

Yes.

Yes, even though that means your address will appear twice on that envelope. That's okay (although it will look odd), because you don't want that envelope (the SASE) to go anywhere but to you.

On the outer envelope, use your name and address as the "return address." On the inner envelope (the SASE), you don't really need a "return address," but if you want to include one, you could use your own name and address again (because you really don't want that envelope going anywhere but to you). In that case, your name and address would appear twice on the SASE, which is allowed.

No. Gmail is email. The above article is talking about regular mail.

No, the Postal Service will stamp the SASE when the sender mails it back to you.

The first envelope (addressed to you) goes inside the second envelope (addressed to the person sending something to you).

It seems hundreds of millions of these stamps were issued and it is worth at most 40 cents.

The stamps need to match the country of origin from where the letter is being sent. So, for example, if you are sending a SASE to a Canadian and you are in the US, put US postage on the outer letter (since you are mailing it from the US) and Canadian stamps on the SASE (since the original letter's recipient will mail it from Canada).

No. Do not enclose a separate SASE unless requested by the place you're sending it to or it's from someplace you require a response, such as when accompanying a manuscript to a publisher or with an RSVP.

There is no special stamp for a government company. If the company address is in your own country (such as the US), then use the stamps for your country's postal service (such as the USPS).