Yes, UltraSentry 13.00 (release year as major version) does not contain all features previous version 6.10 (real version number) has had, but instead contains other features. So the power tip Secure email cleanup
does not explain what currently latest version of UltraSentry supports, but what the previous version 6.10 of UltraSentry supported.
I asked IDM support by email after release of US v13.00 why some features I used in US v6.10 are not available anymore in US v13.00. In my own words what IDM replied:
The reason for the difference in features list and especially in missing features available in previous version can be explained by the fact that UltraSentry v6.10 was an application totally tailor-made for Windows and Windows applications. Therefore the code of US v6.10 was not portable for Linux and MacOS. For that reason IDM decided to completely rewrite UltraSentry making it possible to port UltraSentry in future also to the other platforms. I got the information from IDM support that most of the features of US v6.10 currently missing are planned to return in US 13.10 that got to be released this year.
If you are interested in UltraSentry mainly of secure deletion of Thunderbird emails, I suggest to contact IDM support by email and ask for latest installer of US v6.10 for language ? and additionally ask if and when support for secure deletion of Thunderbird emails is planned to return in US v13.xx. IDM is accommodating towards you surely and will send you US v6.10 for testing. And don't forget that any upgrade to a new version of US 13.xx supporting again secure deletion Thunderbird emails is free within a year (365 days) starting from day on buying the license. So when you get US v6.10 from IDM support, test it a month and come to the decision that it is the right tool for you and therefore you buy the license for US v6.10, you will be able to upgrade for free to US v13.xx and most likely also US v14.00 up to July 2014.