# Email Encryption - Receiver FAQs

The FAQs mentioned here are related to the [Nightfall Data Encryption](https://help.nightfall.ai/data-encryption). 

## I am unable to download the attachments from the Email  <a href="#i-have-set-the-expiration-period-as-4-hours.-however-the-recipient-is-unable-to-view-the-email-right" id="i-have-set-the-expiration-period-as-4-hours.-however-the-recipient-is-unable-to-view-the-email-right"></a>

This is because the sender has enabled Nightfall's persistent protection feature on the email attachments. This prevents you from downloading the attachments. You can justify the Email attachment download requirement and request the sender to share the attachments.

## I saw an Email yesterday. However, now I see that the Email is expired.

This is because the sender has enabled the Set Expiration feature in Nightfall Email encryption. This feature disables the access to email after the expiry time set by the sender. You can request the sender to extend the expiry time of the Email.

## I am unable to Forward an Email that I received

This This is because the sender has enabled the Disable Forward feature in Nightfall Email encryption.&#x20;

&#x20;


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