These are stamped envelopes with no address that were successfully sent through the mail to Postmasters in Africa.
Some African nations do not have reliable systems of addressing so people use maps, descriptions and even phone numbers to get a letter to it's destination. What3words has a high tech solution, but needed to explain it in a low tech letter. We created a campaign using maps and directions on envelopes to bring the problem to life.
Conversations resulted with 7 African national postal systems, one of whom has announced that they are signing a contract.
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