The GRP file format is used by SmartMail, an email server program.
The SmartMail program can host email accounts, storing email messages for a particular user.
.grp File
Extension
Developer:
SmarterTools
档案类别:
什么是 grp 档案以及打开它的方法 - Smartermail Group File
档案类别:
开发商:
SmarterTools