Add the email address

1. Go to Configuration -> Site Options.
2. Select the Custom Mail Sender tab.
   
3. Click Add Email.
   
   
4. Add the Sender name and Email address in the pop-up. Click Save.
   
   

Authenticate your domain

DKIM

1. Check if the email messages were sent from a valid source.
   
2. Check if the email messages were tampered with in transit.
   

Authenticate your custom sender address

1. Go to Configuration -> Site Options.
2. Select Custom Mail Sender. If the email address is authenticated, it will be listed under Authenticated Domains. 
3. The recipient will receive an email with the verification code, which must be verified by clicking Verify, then clicking OK. Your email will be verified and can be set as your preferred sender email.
4. The code is only valid for 30 minutes. If it expires, you can resend the email by clicking on the Resend Email option.
   

1. Copy both the hostname and value. Paste it in the DNS settings of your domain provider as txt record
2. Click Validate in the site builder.
   
   
3. Enter the verification code sent to the email address you are verifying. 
   
4. Click Verify.
   
5. Click OK. Your email will be verified and can be set as your preferred sender email.

1. The verification code is valid only for seven days.
2. Users who delete their email can add it again without having to re-authenticate it. As long as you do not remove the DKIM record from the DNS domain manager, you must verify your email again.
   
3. Please be aware that the hostname and credentials are sensitive and should be kept confidential. Do not share them with unauthorized individuals.