Features > Challenge

Recipient authentication

Make sure you reach the right people

Mailock’s recipient challenges give you peace of mind by making sure only the intended person can open your secure emails.

Using multi-factor authentication helps protect against common risks, such as sending emails to the wrong person - a key cause of data breaches.

SMS code

A familiar method, the SMS challenge sends a unique code to the recipient’s mobile phone.

Once they receive your secure email, they simply enter the code to unlock it.

This method helps eliminate common email risks by using the mobile devices people rely on every day.

Question & answer challenge

If you don’t have your recipient’s mobile number, the Question & Answer challenge is a helpful alternative.

Create a custom question only the recipient can answer - they’ll have five attempts.

This method works well when there’s already a trusted relationship, helping make sure only the right person can access the email.

Unipass ID integration

For financial services users, Mailock integrates seamlessly with Unipass ID, offering one-click access to secure emails.

If you’re already using Unipass Identity, this makes authentication effortless, boosting both security and convenience.

API integrations

Mailock can also integrate with enterprise CRM systems to streamline recipient authentication.

This allows you to tailor recipient challenges using customer data, helping deliver secure communications that match your business needs.