A franking machine for franking a mail item includes an obtain and read component for obtaining and reading a computer file representing a certified personalized mail template, as created by design apparatus, on the basis of a general template and of personalization data for personalizing the general template; and a conveyor for conveying at least one mail item that complies with the general template to the franking machine; the franking machine being adapted to print the personalization data onto the mail item in compliance with the certified personalized template.
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