Can you mail heavier envelopes from mailbox

In the United States, the United States Postal Service (USPS) has specific guidelines for mailing heavier envelopes from a mailbox. Here are the general rules:

  1. Weight limits: The USPS allows you to mail envelopes weighing up to 13 ounces (369 grams) from a mailbox. If your envelope weighs more than 13 ounces, you'll need to take it to a post office or a blue collection box that is specifically designed for heavier packages.
  2. Size limits: The USPS also has size limits for envelopes that can be mailed from a mailbox. The maximum size for a standard envelope is 12 inches (30.5 cm) long, 15 inches (38.1 cm) wide, and 3/4 inch (1.9 cm) thick.
  3. Special handling: If your envelope is heavier or larger than the standard limits, you may need to use special handling services, such as Priority Mail or Parcel Post. These services require you to take your package to a post office or a blue collection box that is designed for heavier packages.

To determine if your envelope can be mailed from a mailbox, you can use the USPS's online tool, the "Mail Weight Calculator." Simply enter the dimensions and weight of your envelope, and the tool will let you know if it can be mailed from a mailbox or if you need to use special handling services.

Remember to always check with your local post office or the USPS website for any specific regulations or restrictions in your area.