Do you write mail stop on envelope

In the United States, the answer is generally no, you don't need to write "Mail Stop" on an envelope. Here's why:

In the past, "Mail Stop" was used to indicate a specific department or location within a large organization, such as a hospital or university, where a piece of mail should be delivered. This was especially important in cases where the organization had multiple buildings or campuses.

However, with the advent of modern mail sorting and tracking technologies, the need to include "Mail Stop" information on envelopes has largely become unnecessary. Most mail carriers and sorting facilities can accurately deliver mail to the correct department or location within an organization without this additional information.

That being said, there are a few exceptions where including "Mail Stop" information might still be useful:

  1. Large, decentralized organizations: If you're sending mail to a large organization with multiple locations or departments, including "Mail Stop" information can help ensure that your mail is delivered to the correct location.
  2. Special handling: In some cases, you might need to indicate special handling instructions, such as "Mail Stop: Billing Department" or "Mail Stop: HR Department." This can help ensure that your mail is delivered to the correct person or department.
  3. International mail: If you're sending mail internationally, you might need to include additional information, such as a department or location code, to ensure that your mail is delivered correctly.

In summary, while "Mail Stop" information is no longer necessary for most mail deliveries, it can still be useful in certain situations where additional clarity is needed.