This invention relates to a process for recording an extension of guarantee of print for a system for franking mailpieces, comprising a display of an indication of "end of initial guarantee" at the level of the franking system; comparing a remaining volume of ink with a minimum volume of ink beyond which printing of the mailpieces is prohibited; if the remaining volume of ink permits, a display of an indication of "offer of extension of guarantee" at the level of the franking system; if this offer is accepted by the user of the franking system, linking with a server of the franking system distributor; and recording of the extension of guarantee in the distributor's server. The indication of the end of initial guarantee corresponds to the franking of a predetermined number of mailpieces.