You can add your own domain on mibo. by adding your domain you are giving permission to Mibo to send emails on your behalf. To give Mibo permission, you point DNS entries from your DNS provider (like GoDaddy, Rackspace, or Cloudflare) to Mibo. Your recipients will no longer see the “edm.mibocloud.com” message on your emails.
Even though this is a small change from your recipient's perspective, this change has a huge positive impact on your reputation as a sender and your email deliverability. Explicitly stating that it comes from you increases your reputation with email service providers which makes it much less likely that they will filter your mail and not allow it get to your recipient's inbox, which increases your deliverability. You are also explicitly showing your recipients that this email comes from you, so they are less likely to mark your mail as spam.
To adding your domain on mibo,
navigate to My Account → Messaging → Email tab
from Sender domain dropdown select Custom Domain
Click on Add Your Domain Button
enter your sub + root domain (i.e. edm.example.com)
click on subdomain and cname values will be appear on a popup
The CNAME record creates an alias for subdomain.yourdomain.com and points to Mibo email gateway The CNAME is needed for our click and open tracking features in order for those statistics to be routed back to your Mibo account. This will also be what your messages are signed by, so your recipients will be able to see what you have chosen for your CNAME. You set up the CNAME files that Mibo provides with your DNS host.
How to set Cname ?