The result of hypothesis test found that most customers had the levels of satisfaction to the service of Postal Thai at Khlong Chan branch in overview which was at the high level (mean 3.96). When considering by case found that the factors for transportation premises was at the high level (mean 4.18). The second was the factors of transportation price which was at the high level (mean 4.11), the factors of the distribution channels was at the high level (mean 4.08) The factors in transportation efficiency was at the high level (mean 4.03). The factors regarding employees was at the high level (mean 3.99), the time factors was at the high level (mean 3.73) and the transportation factors in marketing promotion was at the high level (mean 3.58), respectively.