To verify that you own the email address you want to use to send your email campaigns, click on Domains in the dropdown menu and then click on Add domain.
Add your business email address that belongs to the domain you want to authenticate to receive the verification email.
After you've clicked the link in your inbox, you'll see that the email is verified your MailerLite account.
Note: If you haven’t received a verification email from us, use the resend feature, authenticate your domain, or contact our Support team or additional assistance.
To learn more about verifying, authenticating, and aligning a domain, take a look at our Knowledge base article: https://www.mailerlite.com/help/how-to-verify-and-authenticate-your-domain