> For the complete documentation index, see [llms.txt](https://docs.certinext.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.certinext.io/documentation/certificate-lifecycle-management/ordering-a-certificate/as-a-customer/ordering-smime-certificates/phase-1-steps/step-4-certificate-information.md).

# Step 4 - Certificate Information

This screen specifies the email address that will be secured by the S/MIME certificate. This is the most important field; it defines which email account the certificate will protect.

<figure><img src="https://955357252-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FNvYrWQTJxwzOAGkanyHW%2Fuploads%2FZ2rhrrcJNctkxPngwk1A%2Fimage.png?alt=media&amp;token=8d8b4c9a-4db8-4c2f-bd19-b22879ea2b7f" alt=""><figcaption></figcaption></figure>

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#### Field Reference

•        Use Pre-Verified Domains: A checkbox that, when ticked, populates the Email ID field from a list of domains already verified by your organisation. Tick this if your IT administrator has already verified your email domain in CERTInext. Select your email from the resulting dropdown.

•        Email ID (\*): The email address that this S/MIME certificate will be issued for. This becomes the 'Common Name' in the certificate. Enter the full email address of the mailbox this certificate is meant for (e.g., <john.smith@company.com>).

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**WARNING:**  The Email ID entered here is permanently embedded in the certificate. If you enter the wrong email address, the certificate will be issued for the wrong mailbox and a new order will be required.

**NOTE**:  If the Email ID is already populated from your CSR, review it carefully to make sure it matches the mailbox you intend to secure.

#### What to Do

•        If your domain is pre-verified, tick 'Use Pre-Verified Domains' and select your email from the list.

•        If not, type the full email address directly into the Email ID field.

•        Double-check the email address - this cannot be changed after submission.

•        Click Next.