Does first class mail envelope need a stamp

In the United States, the answer is yes, a First Class Mail envelope typically requires a stamp. Here's why:

• First Class Mail is a type of mail service that requires a minimum postage fee, which is currently $0.55 for a standard letter-sized envelope weighing up to 1 ounce.
• The United States Postal Service (USPS) requires that all First Class Mail pieces, including envelopes, be affixed with the correct postage before being mailed.
• If you don't affix the correct postage, your envelope may be returned to you or, in some cases, may not be delivered at all.

However, there are some exceptions:

• If you're mailing a letter to a destination within the same zip code, you can use a "metered mail" service, which allows you to weigh and pay for postage at a post office or online.
• If you're mailing a large or heavy envelope, you may need to use a different type of postage, such as Priority Mail or Parcel Post, which has its own set of postage rates and requirements.
• If you're mailing a letter to a foreign country, you'll need to use a different type of postage, such as International First Class Mail, which has its own set of postage rates and requirements.

In summary, to mail a First Class Mail envelope, you typically need to affix a stamp with the correct postage, which is currently $0.55 for a standard letter-sized envelope weighing up to 1 ounce.