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What is SSL and how do I store an SSL certificate for my subdomain in CleverReach?

What is SSL?

The abbreviation SSL stands for Secure Socket Layer and is very important for the secure transmission of your data on the Internet and the deliverability of mailings. By implementing SSL, your browser can establish an encrypted connection to a server, as the browser knows that the server also belongs to the domain it claims to belong to.

You can see whether SSL/TLS is activated, for example, by a small lock icon on the far left of the browser address bar.

Store SSL certificate for subdomain

To obtain an SSL certificate for your desired subdomain, you must contact a certification authority.

To store an SSL certificate in CleverReach, follow these steps:

  1. Click on the profile icon in the top right-hand corner of your account.

  2. Open My Account > Settings > SSL.

  3. Store the SSL certificate by clicking on Add certificate.

  4. Here you can see the domains that you have saved so far. Click on Add new domain in the drop-down menu.

  5. Enter the domain, private key and certificate (CRT):
    Private Key: The private key is the secret key that is used to sign the SSL/TLS connections. The private key should never be made accessible to others.
    Zertifikat (CRT): Please enter the certificate here. SSL certificates must be issued by a trustworthy certification authority.
  6. For SSL to work correctly, you must also adjust the CNAME of the subdomain. The CNAME must point to ssl.cleverreach.com. If this has not yet been changed, the following message may appear:


  7. In this case, check the CNAME entry.
    At https://mxtoolbox.com/SuperTool.aspx, for example, the CNAME entry can be checked and errors can be displayed.

If everything is entered and stored correctly, your SSL certificate will be added successfully:

  • To obtain an SSL certificate for your desired subdomain, please contact a certification authority. You can usually obtain an SSL certificate from your domain provider, for example.
  • You will automatically receive a notification before the certificate expires (1 month and 1 week before)
  • This feature is only available in a paid account

Help & Support

If you have any questions or need help, please do not hesitate to contact our Service Team.