Advanced HTML Mail Alert Perl script

Hi all,

there is an old html_mail.pl script on https://wiki.xymonton.org/doku.php/alerts:html_mail1.2 . I like it, but I miss some features.
So I take this script and make some updates and modifications:
    Different Mail Subject depending on Errorlevel
    Duration Time for any Message
    Flapping Status included in Subject and Mailtext
    Colorstatus depends on BBALPHAMSG for Recover Status. Nesessary if you using yellow for OKCOLOR
    Add Enable/Disable Mail Subject / Removing Backgroundcolor: not accessible in Outlook and makes mails in Thunderbird unreadable
    Fix for disable "until okay": Convert XYmon Recover Bodytext "for -1 minutes" to "until okay"
maybe it is useful for someone here in the community but nobody knows it ?
It is running on Xymon 4.3.26 and tested with Outlook 2010 and Thunderbird 38.6.0
And you found it here:
https://wiki.xymonton.org/doku.php/alerts:html_mail2.0

regards
 Helge