USPS 421 Window Clerk Exam Questions and Answers 100% Correct Graded A+ 2026/27
Priority Mail Express - 1-2 days, Money-back guarantee. 365 days a year. , up to $100
insurance. can use with: hold for pickup, return receipt, COD, special handling , restricted
delivery
Priority Mail - 2-3 day delivery service. $50 insurance included. can use with: registered
mail, signature confirmation, cert. of mailing, certified mail, hold for pickup, return receipt,
COD, special handling, restricted delivery
first class mail - Sealed or unsealed typed or handwritten material, including letters, postal
cards, postcards, and business reply mail. can use with: insurance, registered mail, signature
conf., cert. of mailing, cert. mail, return receipt, COD, special handling, restricted delivery
balloon pricing - large and lightweight packages. 84-108 in. less than 20lb. zones 1-4
insured mail - up to $5,000
PS form 3813 (black) - insurance between $0-$500
PS form 3813-P (blue) - insurance between $501-$500
certified mail - proof of mailing. only eligible with First class mail and Priority mail. ps
form 3800 (certified mail receipt)
, registered mail - most secure service. system of receipts is kept. signature at every point.
securely sealed at every crease. cannot be used with PME. stamped to prevent tampering. ps
form 3806 (receipt for reg. mail. label 200 (red and white)
COD (collect on delivery) - buyer pays when the goods are delivered and has no right to
inspect the goods as a condition to acceptance and payment. APO and FPO not eligible PS form
3816- 5 copies. we have to send payment within same or next day
return receipt - proof of delivery. 3 types of domestic return receipts. ps form 3811(green)
restricted delivery - item delivered only to the addressee or addressee's authorized agent.
Certificate of Mailing - purchased at the time of mailing that documents the date the
material was presented for mailinge. (proof of mailing) ps form 3817
55-38-7 % rule - 55%-non verbal comm.
38%-tone of voice
7%-words
domestic mail - Mail that is sent within the boundaries of the United States and its
territories and possessions. FCM, periodicals, USPS marketing mail, Library Mail, Media Mail,
Extra Services
Domestic shipping services - PME, PM, FCMPS, USPS ground, Parcel Return Service
Priority Mail Express - 1-2 days, Money-back guarantee. 365 days a year. , up to $100
insurance. can use with: hold for pickup, return receipt, COD, special handling , restricted
delivery
Priority Mail - 2-3 day delivery service. $50 insurance included. can use with: registered
mail, signature confirmation, cert. of mailing, certified mail, hold for pickup, return receipt,
COD, special handling, restricted delivery
first class mail - Sealed or unsealed typed or handwritten material, including letters, postal
cards, postcards, and business reply mail. can use with: insurance, registered mail, signature
conf., cert. of mailing, cert. mail, return receipt, COD, special handling, restricted delivery
balloon pricing - large and lightweight packages. 84-108 in. less than 20lb. zones 1-4
insured mail - up to $5,000
PS form 3813 (black) - insurance between $0-$500
PS form 3813-P (blue) - insurance between $501-$500
certified mail - proof of mailing. only eligible with First class mail and Priority mail. ps
form 3800 (certified mail receipt)
, registered mail - most secure service. system of receipts is kept. signature at every point.
securely sealed at every crease. cannot be used with PME. stamped to prevent tampering. ps
form 3806 (receipt for reg. mail. label 200 (red and white)
COD (collect on delivery) - buyer pays when the goods are delivered and has no right to
inspect the goods as a condition to acceptance and payment. APO and FPO not eligible PS form
3816- 5 copies. we have to send payment within same or next day
return receipt - proof of delivery. 3 types of domestic return receipts. ps form 3811(green)
restricted delivery - item delivered only to the addressee or addressee's authorized agent.
Certificate of Mailing - purchased at the time of mailing that documents the date the
material was presented for mailinge. (proof of mailing) ps form 3817
55-38-7 % rule - 55%-non verbal comm.
38%-tone of voice
7%-words
domestic mail - Mail that is sent within the boundaries of the United States and its
territories and possessions. FCM, periodicals, USPS marketing mail, Library Mail, Media Mail,
Extra Services
Domestic shipping services - PME, PM, FCMPS, USPS ground, Parcel Return Service
