✓ Royal Mail Authorised Inspector since 2008 | Trading since 2005
The Neopost IS420 (now Quadient) is a low to mid-volume franking machine that can frank up to around 300 mail items a day at a top speed of 65 letters per minute (based on our own experience with a similar machine). It uses smart meter technology, so it supports all Royal Mail services including VAT-liable services, and it is Mailmark ready. Below you will find its key features, Mailmark details and full specifications.
Neopost IS420 franking machine

As a low to mid-volume machine, the IS420 comes with a wide range of franking machine features. The latest smart meter franking technology is integrated into the machine, meaning all Royal Mail services can be used, including VAT-liable services. An integrated choice of weighing scales is available with the IS420, helping to ensure your business never again miss-pays for a mail item. Choose from a 3, 5, 10 or 30 Kg platform.
You can advertise your business completely free of charge by franking a personalised message or slogan onto outgoing mail items. Use up to 8 different slogans to attract customers and potential customers. You can also monitor and track all postage expenses with the Neopost IS420 by using departmental accounts, helping you stay in complete control of your postage costs.
View our range of Neopost IS420 franking machine supplies here.
Mailmark compatibility
Mailmark is a franking service that can be used on a range of franking machines, and the IS420 is one such model that is Mailmark ready. This means businesses franking with the IS420 can benefit from a 2D barcode franking impression and from Royal Mail’s lower Mailmark franking prices. Mailmark is widely seen as the future of franking, so it may be worth using to your advantage. Find out about Mailmark here.
IS420 specifications
View the key specifications of the Neopost IS420 franking machine below.
- Speed: 65 Letters per Minute
- Feeding System: Semi-Automatic
- Weighing Scales: 3, 5, 10 or 30 Kg available
- Connectivity: LAN
- Max. Envelope thickness: 12mm
- Job Memories: 9
- Advertisements: 8
- Departmental Accounts: 25 or 100 available
- PIN Security: Yes
- Smart Meter Technology: Yes
- Mailmark Technology: Yes
If you would like a franking machine similar to the Neopost IS420 then view our range of franking machines here.
Frequently asked questions
How many items can the Neopost IS420 frank per day?
Based on our own experience with a similar machine, the Neopost IS420 is suited to franking up to around 300 mail items a day at a top speed of 65 letters per minute.
Is the Neopost IS420 Mailmark compatible?
Yes. The IS420 is Mailmark ready, so you can frank a 2D barcode impression and benefit from Royal Mail’s lower Mailmark franking prices.
Can the Neopost IS420 weigh mail?
Yes. The IS420 offers integrated weighing scales with a choice of 3, 5, 10 or 30 Kg platforms to help avoid under or over-paying for postage.
Where can I buy Neopost IS420 supplies?
You can order Neopost IS420 ink and labels from our Neopost IS420 and IS440 supplies page; see the live page for current pricing.

