Your questions is ambiguous and grammatically incorrect.
Postal delivery varies from country to country, state to state. Also there are many ways to mail a letter for instance there is airmail which is faster then there is standard mail it's slower or there's priority mail, international for other countries and they all have a different time frame.
In many areas, postal services do not deliver mail on Sundays, with some exceptions for specific services like express deliveries or packages in certain regions. The United States Postal Service, for example, typically does not deliver regular mail on Sundays. However, in some countries or for specific carriers, Sunday delivery may be available. It's best to check with your local postal service for their specific policies.
About 2-3 days with priority mail
First class mail is delivered in 3 to 5 days
12,548,898,514 peices of mail
First Class Mail is delivered in three to five days.
The number of letters a postman delivers in a day can vary widely depending on factors such as location, the size of the delivery route, and the time of year. On average, a postman might deliver between 100 to 300 letters daily. However, during peak seasons like holidays, this number can increase significantly. Overall, the workload can differ greatly from one postal worker to another.
72
6... no mail on Sundays
1-2 first class.
First Class Mail is delivered in three to five days.
First Class Mail is delivered in three to five days.