Last updated 10 October 2026
You don't need any technical knowledge. Setting up takes about 20 minutes, plus waiting time if you're moving an existing domain. You'll need an email address you already use and a way to pay if you buy a domain.
KT8 Mail runs on your own Cloudflare account. Cloudflare is a large internet company that looks after a big share of the world's websites. The free plan is enough to start.
Tip: Turn on two-step sign-in. In Cloudflare, open your profile (top right), choose Authentication, then set up Two-Factor Authentication. Your email will live on this account, so it's worth protecting.
Your domain is the part after the @ in your address, like yourname.co.uk. If you don't have one yet, you can skip this step and try KT8 Mail with a practice address first.
Buying it through Cloudflare is the simplest option, because it's ready to use straight away. Cloudflare charges what it pays for the domain, with no mark-up.
You keep your domain where it is. You just ask your domain company to let Cloudflare look after its settings.
Before you start: if this domain already has working email (for example with Google, Microsoft or your web host), installing KT8 Mail will send its email to KT8 Mail instead. If you're not sure, use a different domain or ask us first.
yourname.co.uk, and select Continue. Choose the Free plan.anna.ns.cloudflare.com. Keep this page open.mail, which gives you mail.yourname.co.uk.When you've finished, KT8 hands its permission back to Cloudflare. Everything you installed belongs to you and keeps working even if kt8.com disappears.
On Cloudflare's free plan you can receive as much email as you like. You can also send to addresses you've verified in Cloudflare, such as your own. To send email to anyone, Cloudflare needs its Workers Paid plan, which costs $5 a month and includes 3,000 emails a month. You pay Cloudflare directly, not us.
Sending more than 3,000 emails a month costs $0.35 for each extra 1,000. For most people that never happens. Cloudflare's pricing page has the details.
No. KT8 Mail runs on your own Cloudflare account, and your email never passes through kt8.com. We have no way to sign in to it. Our privacy page explains what little we keep.
KT8 Mail itself is free. Cloudflare's free plan covers receiving email. Sending to anyone needs Cloudflare's $5 a month plan (see above). A domain costs from a few pounds a year, depending on the ending you choose (.co.uk, .com and so on).
Your mail keeps working. Everything lives on your Cloudflare account, and nothing needs kt8.com to run.
Yes. Choose Just try it first in the installer. You get a practice address so you can look around before buying a domain.
No. It's off until you turn it on in Settings. If you do, it uses Workers AI on your own Cloudflare account, not ours.
Only you. When you open KT8 Mail, Cloudflare emails a one-time sign-in code to the address you use for Cloudflare. Nobody else can get past that page. The one exception is download links for big attachments: the person you send one to can open that single file without signing in. Each link expires after 30 days, the file is encrypted, and you can add a password.
Yes. Add mailboxes such as hello@ or accounts@ from inside the app, and email to them arrives straight away.
Yes. Use Attach files when you write an email, or drag files onto it. Emails can carry about 3.5 MB of attachments in total, so KT8 Mail sends anything bigger (up to 95 MB per file) as a download link instead. The file is encrypted in your browser before it leaves your computer, the link expires after 30 days, and you can add a password. Send the password separately, for example by text message.
Not yet. Importing from Gmail and other providers is coming. You'll download your mail from Google as a file and upload it in KT8 Mail's Settings.
Your email is stored in Cloudflare's storage on your account. Nightly backups and a one-click download of all your mail are coming soon.
Cloudflare checks every email before it reaches you, and turns away mail that fails its basic forgery checks. Of what gets through, KT8 Mail puts mail in your Spam folder if you've blocked the sender, or if it claims to be from a company whose own forgery check (DMARC) it failed.
Open any email and use Block sender to send their future mail to Spam. In Spam, Not spam moves an email back to your Inbox and trusts that sender from then on. You can see and change your blocked senders, or block a whole domain, in Settings. KT8 Mail doesn't read your mail to guess what's spam; smarter filtering is planned.
When a new version is ready, KT8 Mail shows a notice at the top of your inbox. Press Update now, sign in with Cloudflare, and press Update KT8 Mail. Your email and settings are kept. You can also run the installer again at any time and choose the same domain.
No. When you install, Cloudflare asks you to allow KT8 to make changes. That permission is kept only in your own browser, for at most 30 minutes, and is cancelled as soon as the install finishes or you sign out. kt8.com never stores it, so there's nothing it could use later. You can check this yourself: your Cloudflare profile lists every app you've allowed, and you can remove any of them.
Your inbox only lets in your own email address, with a code Cloudflare sends to it, so we can't open it either. Once installed, KT8 Mail only asks kt8.com for the latest version number and sends nothing about you.
The one time you trust us again is when you update. You give permission again, and the installer puts the new version on your account. That's why every version is listed on What's new, and why we protect the accounts we build KT8 Mail from with two-step sign-in.
Email us at hello@kt8.com from any email account, or see the contact page.
Everything lives on your own Cloudflare account, so you remove it there. It takes about ten minutes. Follow the step-by-step guide below. A one-click "Remove KT8 Mail" option is planned.
KT8 Mail is made of a few parts on your Cloudflare account. Removing them deletes your KT8 mailbox for good. Your Cloudflare account and your domain are not affected.
Before you start: there's no download of your mail yet, so anything left in KT8 Mail will be lost. Forward any emails you want to keep to another address first.
In each step, sign in at dash.cloudflare.com and use the search box at the top of the page to find the screen named.
Your Zero Trust team name can stay; it's free and does nothing on its own.
Nothing to undo on kt8.com. The installer handed its permission back to Cloudflare as soon as it finished, and we never kept a copy of your mail. If you ticked "email me about updates", reply to any of those emails and we'll remove your address.