I'm getting married this year and apparently my family and friends can't be trusted to give us valid mailing addresses for save-the-dates. As a result we needed to go through and check them by hand.
Obviously it took way longer than it would have by hand but it was a fun introduction to the USPS web API suite. A key benefit over SmartyStreets and Experian tools is that USPS doesn't throttle or limit your queries!
Once you have the validated addresses you can use the Microsot Word's mail-merge wizard to import the csv to labels.
If you'd like to contribute, please see this page.
In order to make calls to the USPS address verification API you'll need a user id. Luckily they have automated email responses for basic access, just fill out the form here and they'll email you an id within minutes.
devtools::install_github("McClellandLegge/addressr")library("data.table")
library("addressr")
address_fl <- system.file("extdata", "wedding-addresses.csv", package = "addressr")
addresses <- fread(address_fl)
prepareAddress("XXXXXX", addresses, address_column = 'Address', max_tries = 3L)Hans Thompson's repo tipped me off to the existance of the USPS api.
My wonderful fiancee for not killing me for starting a programming project when all she wanted was address labels made.