Files with zl8 file extension might be found as CRT files renamed by ZoneAlarm's Mailsafe service.

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Software that open zl8 file

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ZL8 file extension - ZoneAlarm Mailsafe renamed CRT data

What is zl8 file? How to open zl8 files?

File type specification:

Various data file type icon Various data file type

zl8 file icon: zl8 filetype icon

The zl8 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 zl8 file extension originally had CRT file extension (common internet security certificate). Simple renaming will restore the Windows associations with such file, however it is not advised, unless you are absolutely sure it safe to do.

The default software associated to open zl8 file:

ZoneAlarm Pro icon

Check Point Software Technologies Ltd. logoZoneAlarm Pro  Microsoft Windows software

Company or developer:
Check Point Software Technologies Ltd.

ZoneAlarm Pro is a set of tools used to protect computer against hacker attacks,destroy spyware, and secure privacy.

Related articles:

Mailsafe renamed file extensions

Help how to open:

You can rename the ZL8 file extension back to CRT 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:

Probably cannot be converted to anything else.

List of recommended software applications associated to the .zl8 file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open zl8 file, edit zl8 file, convert zl8 file, view zl8 file, play zl8 file etc. (if exist software for corresponding action in's database).

Unspecified and all other actions for computer programs working with zl8 file - ZoneAlarm Mailsafe renamed CRT data

Click on the software link for more information about ZoneAlarm Pro. ZoneAlarm Pro uses zl8 file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).

Microsoft Windows:

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