Salon industry management software needs folded self-mailer flyer for direct mail

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This customer received 51 postcard designs from 15 designers. They chose this postcard design from TAMZ as the winning design.
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We are looking for a postcard / flyer folded self-mailer design for an 8.5" x 11" card stock printed both sides and folded in half to be the same end size as a 5.5" x 8.5" postcard. So, DOUBLE THE CONTENT from a regular postcard. See mailer attachment for the format we are looking for.
This will be to advertise our salon and spa management software to hair salons, spas, tanning salons, tattoo studios, and massage therapists. Our websites are https://salon-software.com/ and https://insightencore.com/ where you can get inspiration and some content. We have two software applications. Insight is a desktop application and Encore is a web application, so you can focus on one, both or a combination.
We need space for a QR code and of course mailing information.
Updates
Not everyone seems to have understood what we are looking for. An 8.5" x 11" sheet printed both sides and folded in half. Mailing info on one outside half and something on the other outside half to entice people to open it. Content and call to action on the inside halves. See example attachment for the latest submission that most closely resembles what we need.
Need a couple of days before selecting a winner
Target Market(s)
salon, spa, tanning, tattoo, massage
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.
Elegant
Bold
Playful
Serious
Traditional
Modern
Personable
Professional
Feminine
Masculine
Colorful
Conservative
Economical
Upmarket
Requirements
Must have
- content for four 5.5" x 8.5" pages including mailing info
Nice to have
- call to action, qr code