Approach handles most of the domain authentication processes that can be done automatically, but it also needs some manual interference by the person who manages the store's domain.
Domain authentication, formally known as domain whitelabel, shows email providers that your email sender has your permission to send emails on your behalf. To give us permission, you point DNS entries from your DNS provider (like GoDaddy, Rackspace, or Cloudflare) to the records that we will share with you. Your recipients will no longer see the “via limespot.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. Email service providers distrust messages that don't have domain authentication set up because they can not be sure that the message comes from you. 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.
Click here for the next steps to set up domain authentication for your email.