In addition to using the design, copy and digital personalisation to get that specific message across to your audience, you could also consider many other ways to help you elicit that all-important response from your direct mail:

• Recyclable Polythene: contents immediately visible and still recyclable
• Printed Polythene: for security or branded mailings - exciting and colourful
• Designed Outers: make them want to read what you have to say - will a plain white envelope landing on the doormat generate the response you need? 
• Promotional Goods: we've worked with all sorts of unusual and inventive promotional products - call us to discuss your requirements
• Plastic Card Print: particularly useful for membership work
• Enclosing: we have yet to find something we cannot enclose

 A London-based mailing house/fulfilment house, we are sure you will see we have the experience you need.