Secure email on macOS

Set up UKC email in Apple Mail

Add your mailbox as an Other Mail Account using encrypted IMAP and authenticated SMTP on the assigned UKC server hostname.

Account typeOther Mail Account
IncomingIMAP 993
OutgoingSMTP 465

Use your assigned UKC server hostname

Use a hostname such as ukc12.uk, as shown for the hosting service or supplied by UKC. It matches the mail certificate and avoids identity warnings. Do not use a raw IP address.

Test the mailbox in Roundcube

Sign in to webmail with the complete email address and send one external message. If webmail cannot sign in, fix the mailbox password or service first; repeatedly changing Apple Mail will not resolve a server-side problem.

Add the account

  1. Open Mail and choose Mail > Add Account.
  2. Select Other Mail Account.
  3. Enter the sender name, complete email address and mailbox password.
  4. If automatic discovery fails, continue to manual setup.
  5. Select IMAP and enter the assigned UKC hostname for both incoming and outgoing servers.
  6. Use the complete email address as the username for both services.
  7. Finish setup, then send and receive an external test.
Current Apple instructions

Verify the encrypted ports

Username
Your complete email address
Incoming server
Your assigned UKC hostname
IMAP
Port 993 with TLS / SSL
POP alternative
Port 995 with TLS / SSL
Outgoing server
Your assigned UKC hostname
SMTP
Port 465 with TLS / SSL
SMTP alternative
Port 587 with STARTTLS
Authentication
Password, required for SMTP

If Mail hides automatic settings, open Mail > Settings > Accounts > Server Settings and disable automatic management only while entering the provider settings.

Match the symptom to the setting

Password keeps returning
Verify the password in Roundcube and check the full email username.
Certificate warning
Use the assigned UKC hostname for incoming and outgoing mail.
Receives but cannot send
Check SMTP authentication, port 465 and SSL / TLS.
Old password persists
Update both incoming and outgoing server credentials; macOS may store them separately.

Apple Mail still will not connect?

Send us the mailbox address, macOS version, assigned UKC server, ports, encryption choices and exact error. Say whether Roundcube works. Never send the mailbox password.

Ask the Email team

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