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Solution ID : SO28425

Last Modified : 06/20/2018

How to associate certificates for use within Apple Mail (Mac Mail)


Use your personal certificate within Apple Mail.


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.

  1. 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

  2. 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:

Related Articles

SO28421, SO5181, SO6395, SO10186