ZM3

ZoneAlarm Mailsafe renamed NCH file
File type: Various data file
A zm3 file extension is related to the ZoneAlarm MailSafe component used to protect e-mail. A zm3 file stores renamed Outlook e-mail tree file (nch extension by default).
Found 2 different file type records with the same zm3 filename suffix.
What is zm3 file?
File type category:
Various data file
Date updated: February 24, 2018
The zm3 file extension is associated with ZoneAlarm, a personal firewall software, originally created by Zone Labs and currently developed by CheckPoint Software Technologies LTD.
One of ZoneAlarm features is MailSafe, which detects e-mail attachments and warns the user about their presence. When a potentially dangerous attachment is detected, the program quarantines the file with simple renaming of its original file extension, so it breaks the common program association function in Windows and prevents such files from being executed (or launched via associated program).
A file with zm3 file extension originally had NCH file extension (Outlook e-mail tree file). Simple renaming will restore the Windows associations with such file, however it is not advised, unless you are absolutely sure it safe to do.
How to open zm3 file?
You can rename the ZM3 file extension back to NCH and work with the file normally. This can however be potentially dangerous, because the file was quarantined for a reason. So always re-check it with your anti-virus or anti-spyware programs before you rename the files.
How to convert zm3 file?
It is unlikely that this file type can be converted to anything else.
Suggested software to open zm3 file:
Associated software actions with the zm3 file
Software apps that create zm3 files:
ZoneAlarm Pro (Microsoft Windows)
Software applications that handle other tasks involving zm3 files:
ZoneAlarm Pro (Microsoft Windows)
ZSNES Movie #3 file
File type category:
Emulator file
Date updated: November 4, 2011
File extension is used by ZSNES. Nintendo emulator.
Associated software actions with the zm3 file
Software applications that handle other tasks involving zm3 files:
ZSNES (Microsoft Windows)