Apple Mail client association pre-steps:
1. Verify that you have your valid personal certificate on the keychain. If not, use the articles directly below to get your certificate on the keychain.
How to Export: id=SO28421
How to Import: id=SO5181
2. Install the most current Intermediate and root certificates, depending on your product, using the links directly below.
For Digital ID Certificate: id=SO6395
For ECA Certficiate: id=SO10186
How to Associate your certificates with Apple Mail:
A signed message lets your recipients verify your identity as the sender; an encrypted message offers an even higher level of security. To send signed messages, you must have a personal certificate in your keychain. To send encrypted messages, the recipient’s certificate must be in your keychain.
- Choose File > New Message and, in the From pop-up menu, choose the account for which you have a personal certificate in your keychain.
A Signed icon (containing a checkmark) in the lower-right side of the message header indicates the message will be signed when you send it. If you don’t see the icon, customize the header to include it.
Customize a message header
- Address the message to recipients.
- Some mailing lists reject signed messages because the signature is treated as an attachment. To send the message unsigned, click the Signed icon; an “x” replaces the checkmark.
- An Encrypt (closed lock) icon appears next to the Signed icon if you have a personal certificate for every recipient in your keychain; the icon indicates the message will be encrypted when you send it.
- If you don’t have a certificate for every recipient, you must cancel the message or send it unencrypted (click the Encrypt icon; an open lock icon replaces the closed lock icon).
For more information on signing and encrypting messages on Apple Mail, refer to: https://support.apple.com/kb/PH19145?locale=en_US&viewlocale=en_US