Two most popular email clients MS Outlook a product of Microsoft and IBM Lotus Notes product of IBM from two software giant find maximum use at corporate and enterprise level. Mostly professionals go for Outlook to Notes email migration when they switch their work place to an entire different email environment where they are required to access their MS Outlook mailbox items in IBM Lotus Notes.MS Outlook and IBM Notes work on different data file format, PST or personal storage table is the default data storage file for Outlook and NSF (Notes Storage Facility) is the native storage file for IBM Notes. IBM Lotus Notes email application is widely used globally in corporate house and business enterprises for secured email communication as it offers many features for better and smooth email working and one of the great features of Lotus Notes is Replication. Many of the big organizations prefer secure email communication that is carried on IBM Notes enriched with beneficial features. Some of the features that IBM Notes email client facilitate beside basic features like email, address, calendaring includes Offline access Using local replicas of databases and an outgoing mailbox database can be copied locally for better performance Security Notes access levels are secure as it is also applied with encryption for databases, fields, etc. Multi Operating System support Runs on many Operating Systems like; Windows, Linux, and Mac OS Customizability Lotus Notes can be customized according to requirements. PST to NSF Email migration from MS Outlook to IBM Notes can be done either through manual procedure or resorting to some paid solutions. Professional people can opt for manual procedure that counts in free way at the cost of precious time with no assurance of data integrity. For this they can try nUpgrade.exe to migrate your Microsoft Outlook mail data and contacts to IBM Notes. PST to NSF ConverterThis PST to NSF Converter tool is highly advanced. The nUpgrade.exe is a built in feature of Notes migration tools that is located in the directory of IBM Notes email client. For manual procedure steps the user need to follow the Lotus Notes installation which comes with an inbuilt feature to install the Migration tools. When this feature is not installed with IBM Notes you will have to run the software install again and make sure migration tools is opted this time. After the migration tool is installed at your computer system, you can type in “CMD” in the Run command prompt through Start up menu and then navigate to your Lotus Notes install directory. You need to confirm few things before you run Notes Upgrade wizard Ensure that instead of Internet Mail only MS Outlook is configured on your system as Corporate or Workgroup. Check for MS Outlook to be configured as default mail application on workstation. MS Outlook PST or PAB files are linked to profile on system. After checking above things you can perform following steps: Run the command prompt and type directory path where upgrade wizard nUpgade.exe is located and then type command Nupgrade.exe 3 to launch Upgrade Wizard. Now Upgrade wizard window will pop up so Click Next to proceed. Choose the specific output profile that is linked to the file (PST or PAB) which you want to migrate. Click Next to continue Choose the specific upgrade method either Express or Custom to let IBM Notes upgrade converts personal information. After selecting the check box to chose the desired mode you can click on the next button to continue. Custom option of Upgrade method gives the choice to select specific items that you want to convert to IBM Notes while the Express option of Upgrade method takes all the files of PST or PAB linked to selected profile and converts them to IBM Notes. The upgrade wizard will create database of IBM Notes in mail folder below client data directory of Notes. Begin Upgrade window will pop up, Click on Finish tab to start the process. While the process begins it will prompt you to provide User ID of IBM Notes. After completion of the conversion process converted PST or PAB files will appear in folders view of database with XXX_PersonalFolders.nsf. Outlook contacts that were converted will appear in the form of Names.nsf in the Personal Address Book on local workstation. Considering Lotus Notes 6.5.3 or any later version, the contacts which were migrated from MS Outlook to IBM Notes will not be placed in the local Names.nsf. In place of this, the contacts are migrated as a part of the XXX_PersonalFolders.nsf database. For adding these contacts to the local Names.nsf, all you have to do is to open the XXX_PersonalFolders.nsf database by using Notes email client. And, then select Actions > Synchronize Address Book.