How long it takes a letter to travel from houston to denver? -

1-how long it takes a letter to travel from houston to denver in a normal mailand2-do they work on sundays?thank you very muchthis is important

hi there,1 to 3 days is the norm,check on the link for for which service used.There is no regular mail delivery/pickup or retail services on Sundays.this info off the link.http://www.usps.com/prices/welcome.htmregards popsmerry xmas..

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