DKIM(DomainKeys Identified Mail) is a form of email authentication that allows an organization to claim responsibility for a message in a way that can be validated by the recipient.
You can set up the DKIM settings in the app by following below steps-
Log in to the app.
Go to Settings > DKIM Setting > Enable and click Go To Settings link beneath it.
Add your email address in the from email address field. Click the Update button to save.
Also, if you don’t have domain associated email address then you can find a list of the most popular DNS providers below. While pressing DNS provider name you can find tutorials or basic information on How to add the given records to your provider.
Don’t know who your DNS provider is? You can easily find it out here.
NOTE 1: When you search for a tutorial on how to add records keep in mind that you need to look just to the TXT format parts.
NOTE 2: If your provider gives you a fully-qualified name that ends with your domain name, DO NOT include your domain name in the “Name” field when you add the TXT record. If you’re given s1._domainkey.yourdomain.com, only enter s1._domainkey in the “Name” field.
Now, forward the details to the person who manages your email domain server. They will understand what to do because adding DNS records is a common and very simple request.
After that, click on the Validate button and it will validate successfully.