If you use a Quadient (formerly Neopost) franking machine, you already know how essential it is to keep your Quadient franking ink cartridge performing at its best – poor quality ink can lead to faded impressions, machine errors, and rejected mail. In this 2026 guide, we’ll show you exactly how to get the right ink at the right price, and how to choose Royal Mail compatible cartridges that don’t void your warranty.
At Mailcoms, we’ve spent over a decade supplying high-quality, Royal Mail approved compatible and original ink cartridges for Quadient machines. We manufacture many of our inks here in the UK and test them rigorously to ensure:
Whether you’re using an older model like the IS280c or a newer iX Series machine, we’ve got you covered.
The IS280c is a popular entry level Mailmark franking machine used by thousands of UK small businesses. This series of franking machine covers the IS240, IS280 & IS290i series. This franking machine connects via LAN, offers simple on-screen guidance, and prints clean, Royal Mail approved franks with minimal training.
The iX-1 Series models are part of Quadient’s newer Mailmark range, offering touchscreen navigation, improved tracking, and cloud-based updates. The iX-1 Series model is compact and ideal for smaller-sized businesses.
The iX-3 Series & iX-5 Series are the latest Mailmark franking machines available from Quadient that are ideal for medium-sized businesses. This series of franking machine covers the iX-3 Series & iX-5 Series. These franking machines connect via LAN, offers simple on-screen guidance, and prints clean, Royal Mail approved franks with minimal training.
The iX-7 Series model is also part of Quadient’s newer Mailmark range and this machine is perfect for dealing with larger volumes of mail. This franking machine offers one-touch button navigation, improved tracking, and cloud-based updates. The iX-7 Series model is larger in size and ideal for larger-sized businesses and mail volumes.
The IS330 / IS350 / IS420 / IS440 Series & IN360 / IN600 Series are slightly older Mailmark franking machines available from Quadient that are soon to be retired from their range. This series of franking machine covers the following franking machines: IN300, IN360, IN600, IS330, IS350, IS350c, IS420, IS420c, IS440 & IS420c.
The IS460 / IS480 Series & IN700 Series are slightly older Mailmark franking machines available from Quadient that are soon to be retired from their range. This series of franking machine covers the following franking machines: IS460, IS460c, IS480, IS480c & IN700.
The latest range of Quadient franking machines are there iX4 Series, iX6 Series & iX8 Series and we will very soon be stocking ink cartridges for these newest Mailmark models of Quadient franking machines. These machines are direct replacements for the IS280, IN360, IN600 & IN700 Series of franking machines. They are ideal for any business looking for a new franking machine, offering professional postage with modern features and greater flexibility.
This is one of the most common questions we get. So lets break it down.
Most Quadient franking machines will give you an alert when the franking ink level is low, but you should also:
Whether you’re running a compact Quadient iX-1 Series, a fully-automated iX-7 Series, or a newer iX6 Series franking machine, Mailcoms can offer the best franking ink solutions in the UK – without compromising quality, price or reliability. View our range of Quadient Franking Ink Cartridges here.
At Mailcoms, we offer a range of packaging supplies and franking machines. If you are interested in getting a franking machine or wish to upgrade to a Mailmark franking machine with even lower prices available, then please view our franking machine page here or call us today on 01543 572 776.
We are a Royal Mail Authorised Independent Inspector & Maintainer of Franking Machines with over 20,000 customers nationwide and we can supply you with our very own range of models.