The time in advance of the customer's birthday that you must send the card may vary according to the quality of the postal service in the location, a month is recommended.
Birthdays have a pagan origin related to magic (candles symbolize the connection with spirituality and protection) and religion, although in the case of Christianity this custom was abolished until the 4th century, when the Church began to celebrate the birth of Jesus Christ.
With this information, we can conclude that the time in advance of the customer's birthday that you must send the card may vary according to the quality of the postal service in the location, a month is recommended.
Learn more about customer's birthday in brainly.com/question/14869910
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