Privacy policy

Last updated: 15 November 2026

This policy explains what personal information Mix & Margin collects when you visit mixandmargin.com, sign up for the free download, or use the Mix & Margin costing app at app.mixandmargin.com, what it's used for, and your rights.

Who we are

Mix & Margin is run by Millie Pratley, a sole trader based in the United Kingdom. We are responsible for your personal information under UK data protection law. You can contact us at [email protected].

What we collect

• Your email address, and your first name if you give it, when you sign up for the free download or a waitlist.
• Email activity, such as whether you open our emails or click links in them, so we can see what's useful.
• Purchase details if you buy a ticket or product, such as your name, email and what you bought. Card payments are handled by our payment provider, and we never see your full card details.
• Basic technical information your browser sends when you visit any website, such as your IP address and browser type. This is used to deliver the site securely.

The costing app

If you use the costing app at app.mixandmargin.com, we also collect:

• Your email address, which is how you sign in. We email you a sign-in code and link each time you sign in.
• What you save in the app: your ingredients and packaging, what you paid for them and where from, your recipes, selling prices and settings (such as your currency and hourly rate).
• Whether you ticked the box to get Mix & Margin emails when you signed up.
• Sign-in records: when you signed in, and a scrambled version of your IP address kept with each sign-in request so we can stop people sending lots of sign-in emails. Sign-in requests are deleted within a day.

Other app users can never see your ingredients and recipes. We don't share them, and we only look at them if you ask us to help with something in the app.

How we use it

• To send you the download or anything else you've asked for.
• To send you emails about finding bakes that sell, selling them and running a profitable baking business, including details of our masterclasses and membership.
• To deliver anything you buy and handle any questions about it.
• To run your costing app account: signing you in, saving your ingredients and recipes, and working out your costs. We do this because you've asked us to provide the app.

We send you marketing emails because you've given your consent by signing up. In the costing app, you're only added to our email list if you tick the box when you sign up. You can withdraw that consent at any time using the unsubscribe link at the bottom of every email.

Who we share it with

We never sell your information. We use a small number of trusted services to run the business, and they only process your information on our behalf:

• Kit (kit.com), which stores our email list, sends our emails and processes ticket and product payments. If you tick the box in the costing app, your email address is added to our list in Kit.
• Cloudflare, which hosts this website and the costing app, and stores your costing app account and data in Western Europe.
• Resend (resend.com), which sends the costing app's sign-in emails.
• Google Fonts, which supplies the fonts on this site. Your browser requests them from Google, which receives your IP address.
• Skool, if you join our paid community.

Some of these services are based in the United States, so your information may be transferred outside the UK. Where that happens, they protect it using legal safeguards approved under UK data protection law, such as standard contractual clauses.

How long we keep it

We keep your email address for as long as you're subscribed. If you unsubscribe, we keep only what we need to make sure we don't email you again. We keep purchase records for as long as the law requires for tax purposes, usually six years.

We keep your costing app account and everything in it until you delete it. You can do that at any time in the app under Settings, Delete account, which removes your account, ingredients, recipes and settings straight away. Our database provider keeps automatic backups, so deleted data can remain there for up to 30 days before it's gone for good. Deleting your app account doesn't unsubscribe you from our emails; use the unsubscribe link for that.

Your rights

You have the right to ask for a copy of the information we hold about you, to have it corrected or deleted, to object to or restrict how we use it, and to receive it in a format you can take elsewhere. To do any of this, email [email protected].

If you're unhappy with how we've handled your information, you can complain to the Information Commissioner's Office at ico.org.uk. We'd appreciate the chance to put it right first.

Cookies

This website doesn't use advertising or tracking cookies. If that changes, we'll update this policy and ask for your consent first where required.

The costing app uses one essential cookie to keep you signed in, for up to 60 days or until you log out. It also keeps a copy of your data on your device so the app can open when you're offline; this is removed when you log out. Neither is used for tracking.

Changes to this policy

If we change this policy, we'll update the date at the top of this page.