FP Mailing Franking Ink: The 2026 Guide to Saving Money Without Compromise

If you use a FP Mailing (formerly Francotyp Postalia) franking machine, you already know how essential it is to keep your FP Mailing 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.

Why Choose Mailcoms for FP Mailing Franking Ink?

At Mailcoms, we’ve 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’re using an older model like the Postbase Qi3 or a newer Postbase Vision or Fusion Series machine, we’ve got you covered.

View our range of FP Mailing franking ink
FP Mailing Postbase Fusion Semi-Auto Franking Machine
FP Mailing Postbase Mini Franking Machine Ink Cartridge

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 of franking machine covers the Postbase Mini series pre-2025. This franking 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 for larger items.
Click to purchase

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 franking machines cover the following models: 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 for larger items.
Click to purchase
FP Mailing Postbase Series Franking Machine Ink Cartridge
FP Mailing Postbase Series Franking Machine Ink Cartridge

FP Mailing Postbase Ten Franking Ink Cartridges

The Postbase Ten is a popular higher volume Mailmark franking machine used by UK businesses. This franking machine is more advanced that other models by FP Mailing as it comes with a larger integrated touch screen and more features that can automate large volumes of mail. This franking machine 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 for larger items.
Click to purchase

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 for these franking machines cover the following models: 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 for larger items.
Click to purchase
FP Mailing Postbase Vision Original Franking Ink Cartridge

Brand New FP Mailing Postbase Fusion Series Franking Ink Cartridges

The latest range of FP Mailing franking machines are there Postbase Fusion Series of franking machines and we will very soon be stocking ink cartridges for these newest Mailmark models of FP Mailing franking machines. These machines are direct replacements for the Postbase Qi 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.

✅ Our recommended ink:

❓ Original vs Compatible FP Mailing Ink - What’s the Difference?

This is one of the most common questions we get. So lets 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 & approved by Royal Mail.
  • Does not void warranty.
  • Equal or better page yield – In fact, 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 will give you an alert when the franking 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.

Final Thoughts: Trust Mailcoms for Your FP Mailing Ink in 2026

Whether you’re running a compact FP Mailing Postbase Mini Series, a fully-automated Postbase Ten, or a newer Postbase Vision Series franking machine, Mailcoms can offer the best franking ink solutions in the UK – without compromising quality, price or reliability. View our range of FP Mailing 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.

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