GpgOL Incompatible Addons
Contents
The following Outlook add-ins (aka add-ons) are known to cause problems together with GpgOL.
TITUS Message Classification
Version ?
Causes GpgOL not to decrypt / verify any content. Mails will be shown as empty and without crypto state. They will sometimes have the crypto icon in the messagelist.
Known Workarounds
None.
Technical Details
The TITUS Addon causes the "Read" event in Outlook to be blocked and GpgOL does not receive that event. As GpgOL does the decryption in the "Read" event, decryption does not happen.
MailStore Outlook Add-in
Version (9.0.3.9873 tested)
Known Workarounds
None.
Technial details
The same problem as the TITUS Addon. We do not see the "Read" event and never get the option to decrypt / verify the mail. See: https://dev.gnupg.org/T3934
Mimecast for Outlook
Decrypt / Verify does not work, same as with TITUS and MailStore.
Technical details
Not available. reported in: https://dev.gnupg.org/T4692
Known Workarounds
According to https://dev.gnupg.org/T4692 an update to Gpg4win-3.1.10 helped.
PDF Converter Outlook Add-in
Version 7.1
Known Workarounds
None.
Google Apps Sync
The Ggogle Apps Sync Addon makes it impossible for GpgOL to send out OpenPGP/MIME or S/MIME Mails.
Known Workarounds
GpgOL since Version 2.0.5 automatically detects Google Apps Sync accounts and warns the user / switches to "No-MIME" OpenPGP. This does not work with attachments.
Technical Details
See: https://dev.gnupg.org/T3545
Symantec Endpoint Protection
Version - Unknown.
Signed / Encrypted mails are left blank. Reported here: https://forum.gnupg.org/t/outlook-2016-blank-signed-and-encrypted-emails/3257/7
Can also cause heavy workload by triggering many "Read" events in parallel.
Known Workarounds
None.
Further Details
See: https://dev.gnupg.org/T4287
ESET Endpoint Anti-Virus
Version - Unknown.
Signed / Encrypted mails are left blank.
Known Workarounds
Solution in ESET go to the mail client settings: https://help.eset.com/ees/7/en-US/idh_config_emon_clients.html
disable checking mail: "Received e-mail"
comment: because if it finds something in the mail it will move it to a safe folder. And if not, we can decode the message. This will also fix the plug-in disabling error due to too long loading time.
or less secure, which will work for any type of message, disable: "Enable email protection by client plugins"
GFI Mailarchiver plugin
Version - Unknown.
Random crashes.
Known Workarounds
None.
Further Details
See: https://dev.gnupg.org/T4942
GData Outlook Anti Virus plugin
Version - Unknown.
Hidden attachments and broken signature Verification in sent mails.
Known Workarounds
None.