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Secure email data is stored for a specific time period before it expires. This time period is based on the sender's Mailock plan.

Recipients can easily download a copy of a secure email and save it before it expires.

Expiry periods are as follows:

• Mailock Free accounts are limited to 21-day message expiry.
• Mailock Pro accounts are limited to 365-day message expiry
• Enterprise and Automated accounts have at least 365-day message expiry.

Recipient challenges let you verify recipients before they can open a secure email.

Depending on your plan, common options include:

• Q&A: a question only the right recipient should be able to answer.
• SMS: a code sent to the recipient’s phone (Pro and Enterprise).
• Identity checks (IDV): document-based checks - coming soon on Pro; available on Enterprise subject to package and approval.

Separately, you can choose to trust recipients who have linked a Unipass ID. That isn’t a challenge type - it’s a trust option when sending. See “What is Unipass ID?” below.

The Mailock Outlook add-in for Windows adds secure email to your desktop.

Installing the Mailock Outlook add-in will enable the following features in your email client:

• Compose secure emails
• Set recipient challenges
• Track sent messages
• Revoke sent messages
• Surface trigger word alerts
• Auto-decrypt inbound secure emails

Unipass ID is a virtual pass that enables professionals to log on to multiple financial services platforms.

Linking your Unipass ID with your Mailock secure email account means you can use the same login method that you use on other financial services platforms to verify your identity on the Mailock network.

As Unipass ID is a professionally registered identity, Mailock users can also choose to "trust" others who have linked their Unipass ID when they send them secure emails.

All new Mailock accounts contain our preset list of trigger words that, if present in an unsecured email, will surface an alert asking you if you want to send a message securely.

Examples of these words include:

• 'Confidential'
• 'Sensitive'
• 'Investment'

With a Pro or Enterprise account, you or your company administrator can edit this preset list of trigger words to reflect your security policy.

Mailock tracks your secure emails and provides you with a timestamped log of delivery and activity, including:

• Message opens
• Challenge attempts

The message tracker is available to view on the web or in Windows Outlook using our add-in.

Mailock Automated is an optional add-on to Mailock Enterprise that enables bulk delivery features for scaled customer communications.

With Mailock Automated, you can batch and deliver sensitive communications at high throughput.

It is optimal for statements or other documents that need to be sent out regularly to a large audience of customers.