A national and international business post service for your unsorted mail items

PremierSort is a business post service without the need to sort your letters beforehand. 

Whether you’re sending time-sensitive mail or not, we can help you save time and money whilst reducing the number of unreadable items within  your unsorted mail with our PremierSort service.

Ideal for businesses who don’t have the time to pre-sort their items and are unable to meet the pre-sorted mail criteria, we offer a choice of two delivery options depending on your delivery needs;

  • A 2 day service which gives you the benefits of automated sorting for faster delivery times
  • A 3 day service for less time-sensitive, unsorted and heavier/larger deliveries which provides all round value-for-money


Up to 100g letters Up to 100g Light large letters 101-750g Heavy large letters Up to 1kg packets
2 day
3 day

Both services offer collection at a time to suit you, with delivery made to your customers/recipients through the Royal Mail’s UK network.

Our state-of-the-art sortation equipment will not only reduce the time to sort by around 30%, it will also reduce the number of unreadable items. This can help you reduce costs and administrative time, whilst giving you more flexibility.


How you benefit

  • Cost-effective – more unsorted mail is processed per hour saving you money
  • Fast state-of-the-art sorting systems
  • Flexible – we can sort a wide range of envelopes including C4 pre-printed and blank envelopes
  • Reduction in the number of un-routable and rejected items resulting in additional savings
  • Convenient collection times to suit you
  • Choice of indicia to support both transactional and promotional mailings


Unsorted Mail Solutions



  • Must be sending a minimum of 10,000 items per collection unless we are also collecting pre-sorted  mail for our Premier service where a 1000 would be the minimum
  • Can be used for both Direct Marketing and Transactional mail
  • To benefit from the discounts through this service, the mail must be machineable and meet a minimum of 95% read rate


Unsorted Business Mail

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Whether you’re new to Whistl, one of our customers or just want to ask some questions we’d love to chat!
01628 702 965
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