This article will teach you how to update your existing domains MX records to point to Hushmail if you have the domain registered on Namecheap.com
To start, navigate to the Namecheap website and click 'Sign In' in the top left.
Enter your Username and Password for your Namecheap account and click 'Sign In'.
Once you are signed in, you will be directed to your Namecheap Dashboard. You will now want to select the Domain List option on the left.
Click Manage next to the domain you wish to set the MX records for.
Click into the Advanced DNS tab. Here is where you will update your MX records. Scroll down to Mail Settings and select Custom MX from the dropdown.
The information you will need to enter is:
Once all necessary settings are selected, be sure to save changes. Normally, it takes 30 minutes for newly created records to take effect.
Note: If you already have MX records listed in your Namecheap account, you will need to remove them all and replace them with the Hushmail MX records listed above
You can check your MX records for your domain to see if they are set by using a third party MX checking tool like MX Toolbox