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Apple Mail Edition

Apple Mail Edition

2018/06/25

Revision History

 

Rev.

Date (YYYY/MM/DD)

Description

Editor

V.1.0

2015/4/1

Sample edition

NII

V.1.1

2016/12/26

Amendment with addition of [NII Open Domain S/MIME CA] as a new Certificate Authority

NII

V2.0

2018/2/26

Supported environment update: Apple Mail 10 or later

NII

 

Table of Content

1. Installing the S/MIME Certificate
1-1. Prerequisites
1-2. Install Procedure  
2. Sending Digitally Signed E-mails
2-1. How to Send Digitally Signed E-mails
2-2. How to Confirm a Sent E-mail That Was Digitally Signed 
3. Replacing the Expiring S/MIME Certificate with A New Valid One
3-1. Prerequisites
3-2. How to Install the Replacement

1. Installing the S/MIME Certificate

1-1. Prerequisites

The prerequisites for using the S/MIME Certificate in Apple Mail are described.
Replace the technical terms according to the user environment in which the S/MIME Certificate will be used.
(The procedures required for Apple Mail 11.2 on macOS 10.13.3 (High Sierra) are described in this document.)

Prerequisites

  1. The S/MIME Certificate has been installed in the operating system
    (described in the User's Manuals for Installation in Different Web Browsers: Safari/ Chrome/ Opera (macOS) Edition); and

  2. Apple Mail 10 or later is installed.

 

1-2. Install Procedure

Installing the Certificate

  1. If the S/MIME Certificate is installed in the OS, you do not have to install this certificate in the mailer.

 

2. Sending Digitally Signed E-mails

2-1. How to Send Digitally Signed E-mails

How to Send Digitally Signed E-mails

  1. Select [File] > [New Message].



  2. In the new message screen, focus on the digital signature icon to make sure that the signature is enabled.



  3. Click the Send icon when the message is complete.



  4. If you get the password prompt for the keychain and the access permission, enter the password used for the certificate install and select [Allow].



    Note: If [Always Allow] is selected, the keychain access prompt will not appear each time. 

    This completes sending digitally signed e-mails.

 

2-2. How to Confirm a Sent E-mail That Was Digitally Signed

How to Confirm a Sent E-mail That Was Digitally Signed

  1. Select a sent e-mail that was digitally signed from the [Sent] folder.



  2. Click on the [Signed] icon.



  3. Make sure that the certificate is marked as trusted, and click [OK].



    This completes confirmation of a sent e-mail that was digitally signed.