E-mail Signature / Encryption

In this section, we deal with the use of a certificate previously obtained via a web browser. Depending on the web browser and the chosen email software, an export/import in PKCS12 format will be necessary.

This chart indicates which browser to use when requesting a user certificate for a determined email software.

• Native : indicates that there is no transfer manipulation to be done between the browser and the mailbox (so very simple)
• P12 : indicates that an export/import in PKCS 12 format must be used for the transfer (therefore less simple)
• N/A indicates that the transfer is not normally applicable (not the same OS), but it is still possible possible by moving the file!

	INTERNET EXPLORER	FIREFOX	SEAMONKEY	SAFARI
OUTLOOK 2010 and +	P12 exportation: Export from Internet Explorer	P12 exportation: Export from Firefox	P12 exportation: Export from SeaMonkey	N/A
	importation: Import for Outlook 2010 and +
MAIL MAC OS X 10.3+	N/A	P12 exportation: Export from Firefox	P12 exportation: Export from SeaMonkey	Native Signature / encryption with Mail Mac OS 10.3+
		importation: Import for Mail
THUNDERBIRD	P12 exportation: Export from Internet Explorer	P12 exportation: Export from Firefox	P12 exportation: Export from SeaMonkey	P12 exportation: Export from Safari
	importation: Import for Thunderbird
MAIL SEAMONKEY	P12 exportation: Export from Internet Explorer	P12 exportation: Export from Firefox	Native Signature / Encryption with SeaMonkey	P12 exportation: Export from Safari importation: Import for SeaMonkey
	importation: Import for SeaMonkey
MAIL IPHONE/ IPAD	P12 importation: Import for Mail

Full use of your certificate:

• Signature / encryption with Mail Mac OS 10.3+
• Signature / encryption with Thunderbird
• Signature / Encryption with SeaMonkey
• Common questions about certificates uses


Resolving problems:

• Known problems
• My software do not want to encrypt?


• Warning: With Outlook, since version 2010, many users encounter problems with the s/mime and therefore we can no longer recommend it.
  Except if you use it in a well configured Excahnge environment, see Microsoft Technet.
  Use rather Thunderbird or Apple Mail (macOS / Ipad / Iphone).
  


Other software support:

• iOS (Iphone / Ipad) : Use the S/MIME standard to send encrypted messages (Apple documentation)
• Kmail: make signed e-mail be recognized
• Gnome Evolution 2.8+
• Mutt 1.5+
• Lotus Notes
• Eudora
• The Bat!
• Opera Mail
• Pegasus Mail
• With a Windows Mobile platform
• S/MIME with Outlook Web Access
• HPRIM digital certificates

Useful links

• Install an email certificate
• Obtain a client / email certificate
• Emails signature / encryption with Microsoft Outlook
• Signature / encryption with Outlook Express 5.5+
• Signature / Encryption with Outlook 2000