The following cartridges are guaranteed to work in the Neopost IS350 printer.
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Is this cartridge OK to use with Mailmark? Neopost sell one for Mailmark but they charge extra for it.
Hi there, thanks for your question. Yes, your Neopost IS350 machine will print the mailmark barcode and our blue ink compatible cartridges match Royal mail's ink standards so the cartridge will work correctly.
Is this cartridge suitable for all of the Neopost 300 series?
Hi, you can find the franking machines that this cartridge will work in on the following page. It does say it can be used in the Neopost 330 and 350 models