Frequently Asked Questions

Get answers to common envelope addressing questions

Find answers to the most common questions about addressing envelopes, postal guidelines, and mailing best practices.

Address Writing

Mailing Questions

Tools & Validation

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Frequently Asked Questions

Address Writing

Is this an official postal service website?

How to correctly address envelopes?

What happens if I forget to write complete postal code code?

Can I use punctuation on envelopes?

How to write military addresses (APO/FPO)?

How to write territory addresses?

Mailing Questions

How much postage is needed for envelopes?

What are the envelope size requirements?

Tools & Validation

How to verify if an address is correct?

Still Have Questions?