✓ Royal Mail Authorised Inspector since 2008 | Trading since 2005
FP Mailing Franking Ink: the 2026 cartridge buying guide
The right FP Mailing franking ink keeps your impressions crisp, your mail accepted and your machine within warranty. Mailcoms supplies Royal Mail approved compatible and original ink cartridges for every current FP Mailing (Francotyp Postalia) Postbase machine – Mini, Qi, Ten, Vision and Fusion – usually with same-day dispatch. Choosing a Royal Mail approved cartridge means full Mailmark compliance and a lower cost per impression than OEM ink, with no impact on your warranty.
Why choose Mailcoms for FP Mailing franking ink?
At Mailcoms we have spent over a decade supplying high-quality, Royal Mail approved compatible and original ink cartridges for FP Mailing 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 are using an older model like the Postbase Qi3 or a newer Postbase Vision or Fusion Series machine, we have got you covered. View our range of FP Mailing franking ink.
FP Mailing Postbase Mini franking ink cartridges
The Postbase Mini is a popular entry-level Mailmark franking machine used by thousands of UK small businesses. This series covers the Postbase Mini range pre-2025. The machine connects via LAN, offers simple on-screen guidance, and prints clean, Royal Mail approved franks with minimal training.
Our recommended ink
- Mailmark Postbase Mini 20ML Compatible Cartridge – Royal Mail approved.
- Easy to install, reliable performance.
- Excellent shelf life and page yield.
- Also available in multi-buy bundles.
- Refill Reset & Remanufactured options also available.
- Pair with our double sheet labels for the cleanest impressions on larger items.
Postbase Qi Series franking ink cartridges
The Postbase Qi Series models, which were later rebranded, are part of FP Mailing’s older Mailmark range, offering touchscreen navigation, improved tracking, and cloud-based updates. Our supplies for these machines cover: Postbase Qi3, Postbase Qi4, Postbase Qi6, Postbase Qi9, Postbase Econ, Postbase Office, Postbase Enterprise & Postbase Enterprise Pro.
Our recommended ink
- Mailmark Postbase 42ML Compatible Cartridge – Royal Mail approved.
- Easy to install, reliable performance.
- Excellent shelf life and page yield.
- Also available in multi-buy bundles.
- Refill Reset & Remanufactured options also available.
- Pair with our double sheet labels for the cleanest impressions on larger items.
FP Mailing Postbase Ten franking ink cartridges
The Postbase Ten is a popular higher-volume Mailmark franking machine used by UK businesses. It is more advanced than other FP Mailing models, with a larger integrated touchscreen and more features to automate large volumes of mail. It connects via LAN, offers simple on-screen guidance, and prints clean, Royal Mail approved franks with minimal training.
Our recommended ink
- Mailmark Postbase Ten 42ML Compatible Cartridge – Royal Mail approved.
- Easy to install, reliable performance.
- Excellent shelf life and page yield.
- Also available in multi-buy bundles.
- Refill Reset & Remanufactured options also available.
- Pair with our double sheet labels for the cleanest impressions on larger items.
Postbase Vision Series franking ink cartridges
The Postbase Vision Series models, which were later rebranded, are part of FP Mailing’s newest Mailmark range, offering touchscreen navigation, improved tracking, and cloud-based updates. Our supplies cover: Postbase Vision 3S, Postbase Vision 5S, Postbase Vision 5A, Postbase Vision 7A & Postbase Vision 9A.
Our recommended ink
- Mailmark Postbase Vision 40ML Original Cartridge – Royal Mail approved.
- Easy to install, reliable performance.
- Excellent shelf life and page yield.
- Also available in multi-buy bundles.
- Pair with our double sheet labels for the cleanest impressions on larger items.
Postbase Fusion Series franking ink cartridges
The latest range of FP Mailing franking machines is the Postbase Fusion Series, and we will very soon be stocking ink cartridges for these newest Mailmark models. They are direct replacements for the Postbase Qi Series and are ideal for any business looking for a new franking machine, offering professional postage with modern features and greater flexibility.
- Postbase Fusion Semi-Auto supplies
- Postbase Fusion Auto supplies
- Postbase Fusion Advanced supplies
- Postbase Fusion A120 supplies
Original vs compatible FP Mailing ink – what’s the difference?
This is one of the most common questions we get, so let us break it down.
Original (OEM) ink
- Made by the equipment manufacturer – in this case FP Mailing.
- 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 warranty.
- Equal or better page yield – many of our customers say our compatibles outlast the OEMs.
How to know when to replace your FP Mailing ink cartridge
Most FP Mailing 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 runs to the Post Office.
Trust Mailcoms for your FP Mailing ink in 2026
Whether you are running a compact Postbase Mini, a fully automated Postbase Ten, or a newer Postbase Vision Series machine, Mailcoms offers some of the best franking ink solutions in the UK – without compromising on quality, price or reliability. View our range of FP Mailing franking ink cartridges here.
We also offer a range of packaging supplies and franking machines. If you would like a franking machine, or wish to upgrade to a Mailmark machine with even lower rates, view our franking machine page here or call us on 01543 572 776. We are a Royal Mail Authorised Independent Inspector & Maintainer of postal franking machines (since 2008) and have serviced and supplied over 40,000 customers across the UK, with our own range of low-cost machines.
FAQs
Does compatible FP Mailing ink void my warranty? No – our compatible cartridges are Royal Mail approved and do not void your FP Mailing machine warranty.
Which FP Mailing machines do you supply ink for? Postbase Mini, the Postbase Qi series (Qi3, Qi4, Qi6, Qi9, Econ, Office, Enterprise and Enterprise Pro), Postbase Ten, the Postbase Vision series (3S, 5S, 5A, 7A and 9A), and the Postbase Fusion series.
What is the difference between original and compatible ink? Original (OEM) ink is made by FP Mailing and costs more. Compatible ink is UK-made, Royal Mail approved, lower cost and gives equal or better page yield, without voiding your warranty.
When should I replace my FP Mailing ink cartridge? Your machine alerts you when ink is low. Also watch for faint or incomplete franks, and keep a spare cartridge in stock.