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If you attempt to add a domain to your Mailofly account and receive the error:
This means the domain exists in another Mailofly workspace or was previously registered under an older account.

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How to Resolve

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Option 1: Remove from Previous Account

If you or someone on your team created a previous Mailofly account:
  1. Log in to the original account.
  2. Go to Domains in the dashboard.
  3. Select the domain, click the settings menu, and select Delete Domain.
  4. Once deleted, return to your current account and add the domain.

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Option 2: Use a Subdomain

If you cannot access the previous account immediately, consider using a dedicated sending subdomain such as:
  • mail.yourcompany.com
  • send.yourcompany.com
  • notifications.yourcompany.com
Using a subdomain is email deliverability best practice and avoids conflicting with apex domain records.

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Option 3: Contact Support for Ownership Verification

If an unauthorized party has claimed your domain, our team can verify DNS ownership via a custom TXT challenge record. Contact support at support@mailofly.com with:
  • The domain name
  • Proof of DNS administrative access

Related topics

Claim domainCustom DomainsReply to EmailsManage DomainsDomain Mismatch