By default, all software supports multiple file extensions. MailShift supports at least 1 different file extensions. The basic files that MailShift supports are .MHP. However, not all of the extensions listed on the list are always used to save the effects of work in MailShift. Very often, files with such extensions are used as source data files used by MailShift.
MailShift 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 MailShift and try to save it in another file format, also supported by MailShift.