Custom domain email explained
A proper domain mailbox lets you send and receive as you@yourdomain.co.uk
Choose a mailbox when you want to send and receive as you@yourdomain.co.uk. Choose forwarding when you only want incoming messages passed to an inbox you already use.
Which email option do I need?
| Option | Receives mail | Sends as your domain | Best for |
|---|---|---|---|
| Email Forwarding | Sends incoming messages to another inbox | No | Receiving at your domain without another inbox to manage |
| Custom Domain Email | Stores messages in its own inbox | Yes | One everyday business mailbox |
| Business Email Hosting | Stores messages in several mailboxes | Yes | A business that needs several addresses or email domains |
What you need to set up a domain mailbox
Your registered domain
The domain must remain renewed and connected to the email service. UKC handles this connection when you add Custom Domain Email to a parked UKC domain.
A mailbox and password
Buy and manage Custom Domain Email from the domain control centre. Roundcube webmail uses the full email address; IMAP, POP and SMTP use the account username printed in the welcome email. Keep the password private.
The settings below
Copy the server name, port numbers and security choices into your email app. Use the account username printed in the Custom Domain Email welcome email.
Settings to copy into your phone or computer
Use webmail.ukc.uk whenever the app asks for the incoming server or outgoing server. You can also visit that address in a browser to read and send email without setting up an app.
| Service | Server | Port and security | Username |
|---|---|---|---|
| Roundcube webmail | webmail.ukc.uk | HTTPS in a browser | Full email address |
| IMAP incoming | webmail.ukc.uk | 993 with SSL/TLS – recommended | Account username from the welcome email |
| SMTP outgoing | webmail.ukc.uk | 587 with STARTTLS – recommended | Account username from the welcome email |
| SMTP alternative | webmail.ukc.uk | 465 with implicit TLS | Account username from the welcome email |
| POP alternative | webmail.ukc.uk | 995 with SSL/TLS | Account username from the welcome email |
SMTP authentication is required. Use the same account username and mailbox password for outgoing mail as you use for incoming mail.
Choose an email application setup guide
Choose a Custom Domain Email plan
Basic
1 GB storage
A straightforward mailbox for lighter use.
Standard
5 GB storage and spam protection
More capacity with additional filtering.
Pro
10 GB storage and priority support
More capacity for heavier mailbox use.
Prices exclude VAT and can change. Check the domain control centre for the current price and total before ordering.
Good habits for business email
Keep the domain connected
Do not change email DNS records unless you know why the change is needed. These records tell other mail systems where to deliver messages and help them recognise genuine email from your domain.
Send responsibly
Use accurate sender details, do not buy mailing lists and investigate repeated delivery failures. These habits help protect your domain’s sending reputation.
Use IMAP on your devices
IMAP keeps the same messages and folders on your phone, computer and webmail. Outgoing mail uses the same account username and password as incoming mail.
Keep important records
Seeing the same email on several devices is not a separate backup. If messages must be kept for business or legal reasons, export or archive them somewhere independent.
Questions about custom domain email
Do I get email just by registering a domain?
A UKC domain includes email forwarding tools. A mailbox that stores and sends messages is a separate email or hosting service unless the selected product says otherwise.
Can I use Outlook, Apple Mail or a phone?
Yes. Use webmail.ukc.uk for the incoming and outgoing servers, and use the account username printed in the Custom Domain Email welcome email. Do not use the full email address as the app username; that format is for Roundcube webmail.
Can I keep Gmail as my inbox?
You can forward incoming mail to Gmail. To send as your domain reliably, use a Custom Domain Email mailbox or another proper outgoing-mail service.
Ready for a business address?
Choose the mailbox service that fits how you work
Review the current storage, mailbox and billing details before ordering.