As a Whistl Customer here is all the information you need to access the latest software and support details.
Your account team is available to support you day-to-day.
If you have a specific query or question, please contact your account team or representative directly.
If you have any general queries or questions please contact
Customer Services
Access the latest sortation software/file specifications
If you want to sign up for 'software update' email reminders, please use the link at the bottom of this page.
Downloading this software is subject to the terms of our Download License Agreement.
If you do not agree to the terms of this Licence you should not download the Software.
For more details on our products and services download the most relevant details in our helpful customer guides.
As a Whistl customer your mailing campaigns will need to carry a mailing indicia.
Your account manager and mailing house will give you the guidance on which mailing indicia you need to use when arranging your mailshot activities.
To ensure that your mailings are the right size and dimensions aligned to your ratecard, please review Royal Mail's video on how to check your item's, with the thickness checker
To ensure that your mailings are the right size and dimensions aligned to your ratecard, please review Royal Mail's video on how to check your item's length and width