"The importance of this election, combined with the fact it is being held amidst a national pandemic, further heightens the need to provide correct voting information to Coloradans," she said.
USPS pushed back against Griswold's claim in a response later Saturday, saying the mailers are meant to help Americans understand the overall mail-in voting process.
USPS spokesman Dave Partenheimer told CNN on Saturday that "the mail-piece -- which has already been delivered to most households and will reach every American residential mailing and P.O.
Box address in the coming week -- contains a single set of simple recommendations for voters throughout the nation, regardless of where they live and where they vote."
"The main message of the mail-piece is that voters should plan ahead, educate themselves about voting options available in their jurisdiction, and, if they choose to vote by mail, to give themselves enough time to receive, complete and return their ballot," he said.
DeJoy first told lawmakers in late August that USPS had plans to "send a letter to every American" explaining "what our process is" for mail-in voting.