Since in actual facts if we see the MBOX file is supportive of many E-Mail applications such as Evolution, Apple Mail, and Entourage etc. which makes it more convenient for the users to access the precise file. Conversion procedure of Lotus Notes to Evolution is quite complicated which if achieved through any usual tools available online can be more harmful. Accordingly to convert NSF file to MBOX one way or another might get the need of an effective utility which should be capable of converting Lotus Notes to Eudora that is supported by MBOX file and can be easily accessed in such of the file formats which we can’t even think of. The Lotus Notes to MBOX converter was built specifically by keeping some obliging instances in mind which made it more clear for the users that this tool along with the conversion process will also maintain the Data-Accuracy of the exported files and the attachments to it. Converting NSF contents to MBOX will help user to switch from Lotus Notes to Evolution email client which is open-source and cross-platform. NSF to MBOX converter free download application is also available as a trial purpose which converts partial numbers of mails but the full version of this tool converts complete Lotus mails to MBOX format.