Calculate shipping rates and times for packages and get the USPS zones corresponding to 3-digit and 5-digit zip code pairs.
Contributors:
Amanda Dobbyn
To get postage information, use fetch_mail
.
To get zones, use get_zone_three_digit
or get_zone_five_digit
.
The zones vignette can be found with browseVignettes(package = "postal")
.
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