In the section of the Guard settings, you can define whether Autocrypt keys are automatically imported. You can set the following:
All Autocrypt keys received are automatically imported.
An automatically imported key is used as follows:
An outgoing message to this contact can be encrypted with this key.
The signature of an incoming message from this contact will not be verified with the key. That means: It can not be verified if the sender is real and the message content has been transferred unaltered.
For each Autocrypt key received you will be asked whether to import this key. Details of the Autocrypt key will be shown allowing you to check its validity. If you import the key, it will be regarded as verified. A verified key will be used as follows:
An outgoing message to this contact can be encrypted with this key.
The signature of an incoming message from this contact will be verified using the key. If the verification is successful, the sender is real and the message content is unaltered.
How to define how Autocrypt keys are imported:
Click the icon in the menu bar. Click on .
The Settings window opens.
Click on in the left pane.
Enable . Items for managing keys and for the Autocrypt settings will be displayed.
Below , proceed as follows:
To import Autocrypt keys, enable .
If you enable , Autocrypt keys will be imported automatically.
This is the default setting if is disabled.
If you disable , you will be asked whether you want to import the key. The key details are shown so that you can check the validity of the key. If you accept the key, it will be regarded as verified.
Related topics:
Parent topic: Encrypting Email Conversations with Autocrypt