Securely mailing external recipients

This document explains how to safely send a message to someone outside your organization. A verification method is required because the external recipient likely does not have a Zivver account. Recipient control adds an extra layer of security to the Zivver message, in the form of an SMS code or access code. You only need to complete the verification method once per email address. Zivver remembers and reinstates verified recipients.

Securely mailing external recipients

The procedure below assumes that you have created a new email draft in Outlook and have added one or more recipients.

1. Open a new email in Outlook.
2. Click the toggle in the gray Zivver toolbar to enable secure mailing.

The toolbar turns green to indicate that secure mailing is enabled: .
3. Click the Recipient verification icon.

A window opens with recipient verification methods.
4. Click the menu next to a recipient. 5. Choose recipient verification methods as needed:

• Zivver account – This method is automatically selected if the recipient has a Zivver account. The recipient can read the message immediately. This option is not available for new recipients.
• SMS to new number – Choose this method if you know the recipient’s mobile phone number. They will receive a code via SMS and must enter it in a form to open the message.
• SMS to phonenumber – Choose this method to send a new SMS code to a phone number that Zivver already knows. The recipient will receive a code via SMS and must enter it to open the message.
• Set up organization access code – Use this method if you want a single access code to be used by all senders in your organization (or domain) when emailing this recipient. The recipient will be asked to enter the code when they receive the message.
• Organization access code saved_code – Use this method if your organization has already set an access code for the recipient. The recipient will be asked to enter this code when they receive the message.

Note

Both Organization access code saved_code and Access code saved_code are shown as Access code saved_code. The description below each option clarifies whether it is an organization or personal access code.

• Access code – Choose this method if you do not have the recipient’s mobile number, but you can contact them by other means besides email. Choose a code and share it with the recipient through a secure channel. Do not send the code via email, as that would compromise the message’s security.
• Access code saved_code – Use this method if the recipient already has an access code that you shared earlier. The recipient will be asked to enter the code when they receive the message.

Note

Both Organization access code saved_code and Access code saved_code are shown as Access code saved_code. The description below each option clarifies whether it is an organization or personal access code.

• Verification Email – Choose this option only if none of the above options are available. Zivver will send an access code via email.
  Learn more about verification methods.
• Transport security compliant – Use this method if your organization allows sending messages using transport security (such as TLS, DANE, or PKIX). If the recipient supports NTA 7516, this will automatically be selected as the verification method. If the recipient supports another compliant transport security method, it may be used depending on your organization’s configuration.

6. Optional: Choose a notification language:
   1. Click the recipient’s email address.

A message card titled Contact information appears. 2. Choose a language from the drop-down menu next to Notification language. 3. Click Save to save your choice. 7. Click OK.

You can now safely send the email, including to recipients outside your organization.

Updated on 2026-06-18