Quadient Franking Ink: The 2026 Guide to Saving Money Without Compromise

For Quadient (formerly Neopost) franking machines in 2026, the best-value ink is a Royal Mail approved compatible cartridge: it is made in the UK, tested and approved by Royal Mail, costs less than the manufacturer’s own (OEM) ink, and does not void your warranty. Mailcoms supplies compatible, original and refill/reset cartridges for every current Quadient model, with same-day dispatch on most orders.

Why choose Mailcoms for Quadient franking ink?

At Mailcoms, we have spent well 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:

• Perfect print quality every time.
• Full Royal Mail compliance, including Mailmark-compatible prints.
• No impact on your warranty.
• Lower cost per impression compared to OEM cartridges.
• Same-day dispatch on most orders.

Whether you use an older model like the IS280c or a newer iX Series machine, we have you covered. View our range of Quadient franking ink.

Quadient IS280c franking ink cartridges

The IS280c is a popular entry-level Mailmark franking machine used by thousands of UK small businesses. This series covers the IS240, IS280 and IS290i machines. It connects via LAN, offers simple on-screen guidance, and prints clean, Royal Mail approved franks with minimal training.

Recommended ink: Mailmark IS280c Series compatible cartridge (Royal Mail approved). Easy to install with reliable performance, excellent shelf life and page yield, available in multi-buy bundles, with original, refill reset and remanufactured options also available. Click to purchase.

Quadient iX-1 Series franking ink cartridges

The iX-1 Series is part of Quadient’s newer Mailmark range, offering touchscreen navigation, improved tracking and cloud-based updates. It is compact and ideal for smaller businesses.

Recommended ink: Mailmark iX-1 Series compatible cartridge (Royal Mail approved), with original, refill reset and remanufactured options also available. Click to purchase.

Quadient iX-3 & iX-5 Series franking ink cartridges

The iX-3 Series and iX-5 Series are the latest Mailmark franking machines from Quadient, ideal for medium-sized businesses. They connect via LAN, offer simple on-screen guidance and print clean, Royal Mail approved franks with minimal training.

Recommended ink: Mailmark iX-3 Series & iX-5 Series compatible cartridge (Royal Mail approved), with original, refill reset and remanufactured options also available. Click to purchase.

Quadient iX-7 Series franking ink cartridges

The iX-7 Series is also part of Quadient’s newer Mailmark range and is perfect for larger volumes of mail. It offers one-touch button navigation, improved tracking and cloud-based updates, and is larger in size – ideal for larger businesses and mail volumes.

Recommended ink: Mailmark iX-7 Series high-capacity compatible cartridge (Royal Mail approved), with original, refill reset and remanufactured options also available. Click to purchase.

Quadient IS330 / IS350 / IS420 / IS440 & IN360 / IN600 Series franking ink cartridges

The IS330 / IS350 / IS420 / IS440 and IN360 / IN600 Series are slightly older Mailmark franking machines from Quadient, soon to be retired from the range. This cartridge covers the IN300, IN360, IN600, IS330, IS350, IS350c, IS420, IS420c and IS440 machines.

Recommended ink: Mailmark IS330 / IS350 / IS420 / IS440 & IN360 / IN600 compatible cartridge (Royal Mail approved), with original, refill reset and remanufactured options also available. Click to purchase.

Quadient IS460 / IS480 & IN700 Series franking ink cartridges

The IS460 / IS480 and IN700 Series are slightly older Mailmark franking machines from Quadient, soon to be retired. This cartridge covers the IS460, IS460c, IS480, IS480c and IN700 machines.

Recommended ink: Mailmark IS460 / IS480 & IN700 compatible cartridge (Royal Mail approved), with original, refill reset and remanufactured options also available. Click to purchase.

New Quadient iX4, iX6 & iX8 Series franking ink cartridges

The latest range of Quadient franking machines is the iX4 Series, iX6 Series and iX8 Series, and we will very soon be stocking ink cartridges for these newest Mailmark models. They are direct replacements for the IS280, IN360, IN600 and IN700 Series, ideal for any business wanting a new franking machine with modern features and greater flexibility.

• Mailmark iX4 Series & iX6 Series compatible cartridge (Royal Mail approved).
• Mailmark iX8 Series compatible cartridge (Royal Mail approved).
• View Quadient iX4 Series supplies.
• View Quadient iX6 Series supplies.
• View Quadient iX8 Series supplies.

Original vs compatible Quadient ink – what’s the difference?

This is one of the most common questions we get, so let’s break it down.

Original (OEM) ink

• Made by the equipment manufacturer – in this case Quadient / Neopost.
• Higher cost.
• Trusted by brand-loyal customers.

Compatible ink (Royal Mail approved)

• Made in the UK using Royal Mail approved franking ink.
• Lower cost.
• Tested and approved by Royal Mail.
• Does not void your warranty.
• Equal or better page yield – many customers say our compatibles outlast the OEMs.

How to know when to replace your Quadient ink cartridge

Most Quadient franking machines alert you when the ink level is low, but you should also:

• Watch for faint or incomplete franks.
• Check your print head for smudges or clogs.
• Always keep a spare cartridge in stock to avoid last-minute trips to the Post Office.

Final thoughts: trust Mailcoms for your Quadient ink in 2026

Whether you run a compact iX-1 Series, a fully automated iX-7 Series or a newer iX6 Series franking machine, Mailcoms offers the best franking ink solutions in the UK – without compromising on quality, price or reliability. View our range of Quadient franking ink cartridges.

We also offer a range of packaging supplies and franking machines. If you are interested in getting a franking machine or upgrading to a Mailmark franking machine with even lower prices available, view our franking machine page or call us today on 01543 572 776.

Mailcoms is a Royal Mail Authorised Independent Inspector & Maintainer of franking machines since 2008, with over 40,000 customers serviced and supplied and our own range of models.

Quadient franking ink FAQs

Does compatible Quadient ink void my warranty?

No. Mailcoms compatible cartridges are made in the UK with Royal Mail approved ink, tested and approved by Royal Mail, and do not void your franking machine warranty.

Is compatible Quadient ink cheaper than original (OEM) ink?

Yes. Compatible cartridges cost less per impression than OEM cartridges, with equal or better page yield.

How do I know when to replace my Quadient ink cartridge?

Your machine usually alerts you when ink is low. Also watch for faint or incomplete franks and smudges or clogs on the print head, and keep a spare cartridge in stock.