Privacy notice

Last updated: 9 November 2026

Who we are

MailSafeUK is a trading name of Joseph O'Donnell. Our correspondence address is Office 2176, 92 Castle Street, Belfast, Northern Ireland, BT1 1HE. We are the data controller for the personal information described here. Contact us at hello@mailsafeuk.co.uk.

What the free checker does

When you enter a domain, we look up its public DNS records (SPF, DKIM, DMARC and similar) and grade them. We do not access anyone's email. Results are kept in temporary memory for about an hour to speed up repeat checks. They are only stored permanently if you give us your email address to unlock the fix list.

What we collect

Your email address, the domain you checked, its grade and score, and the date and time.
Whether you ticked the box to receive occasional email security tips.
Your IP address is used briefly to limit abuse of the checker. We do not save it in our database, though our hosting and security providers may keep technical logs.

Why we use it and our legal basis

To give you your fix list: legitimate interests, so we can provide the service you asked for.
To send you tips and news: only if you ticked the box. This is based on your consent, and you can withdraw it at any time.

If we contact you about our services

We may email businesses using publicly available business contact details, such as a company website, a professional directory or Companies House, where the law allows it. We only do this by email to limited companies and LLPs, and only with consent for sole traders and individuals. Our legal basis is legitimate interests in offering email security services to relevant businesses. Every message tells you who we are and how to opt out, and you can ask us to stop at any time by replying.

Who we share it with

We never sell your data. We use trusted providers to run the service: Supabase (database, hosted in the UK), Render (website hosting), Cloudflare (DNS and security) and Microsoft (email). Some of these may process data outside the UK, in which case they rely on approved safeguards for international transfers.

How long we keep it

We keep lead details for up to 24 months after your last interaction with us, or until you ask us to delete them. If you opt out of marketing, we keep your email address on a do-not-contact list so that we honour your request.

Your rights

You can ask us to give you a copy of your data, correct it, delete it, restrict how we use it, or stop using it for marketing. You can also withdraw consent at any time. Email hello@mailsafeuk.co.uk and we will reply within one month.

Cookies

We do not use advertising or analytics cookies. Our security provider, Cloudflare, may set cookies that are strictly necessary to protect the site from abuse.

Complaints

If you are unhappy with how we handle your data, please contact us first. You can also complain to the Information Commissioner's Office at ico.org.uk or on 0303 123 1113.

Changes

We may update this notice, and the date at the top will change when we do.