By default, all software supports multiple file extensions. Mail Security for SMTP supports at least 1 different file extensions. The basic files that Mail Security for SMTP supports are .SLF. However, not all of the extensions listed on the list are always used to save the effects of work in Mail Security for SMTP. Very often, files with such extensions are used as source data files used by Mail Security for SMTP.
Mail Security for SMTP can be used to convert file formats between the file extensions listed below. You can open a file with one of the file extensions below via Mail Security for SMTP and try to save it in another file format, also supported by Mail Security for SMTP.