HSL (Hay Systems Limited) was formed in 1999 in Edinburgh, Scotland. Focusing on the provision of SMS services, we provide a fast, efficient, reliable and high quality mobile messaging infrastructure for clients worldwide.

Since 1999 we have continued to grow and develop our technical capabilities, and with continued investment the company now finds itself in a highly competitive position within the booming SMS industry. Our knowledge and expertise has developed over the years, and we have recently announced the introduction of our own SMSC (Short Message Service Centre) to further enhance service provision. This significant development allows more direct communication with the global mobile networks, and further details regarding the benefits for clients can be found in the HSL News section, or alternatively contact us.

As active members of the SMS Forum and established members of the Mobile Data Association (MDA), we are up to date with the latest information and technical innovations within the industry. In addition we are members of 160 Characters mobile messaging forum, and the MX Alliance in Scotland, participating actively in the promotion of the mobile and wireless industry as a whole. Given the increasing importance of SMS as a communications tool, we are committed to enhancing our knowledge and technical capabilities, ensuring clients receive the best all round service.

If there is anything we can help you with please feel free to contact us on +44 1506 424950, or email us at enquiries@haysystems.com. Sales email enquiries should be directed to sales@smscarrier.com.

Technical mechanisms are in place to ensure consistently high service availability and the continuation of our high quality standards in the event of the failure of a single site. We operate servers in datacentres located in the UK and the USA. Further information can be viewed in the Technical section.

Hay Systems Limited is a company incorporated in Scotland under the Companies Act (registered number SC201362). Registered office: 1-4 Atholl Crescent, Edinburgh, EH3 8LQ, United Kingdom. VAT registration number: GB 743 0424 62.

For further information on HSL's services please visit http://www.hslsms.com/.