A Simple Guide to Perform Re-run Migration from Lotus Notes to Office 365

A week back, my manager has asked to migrate Lotus Notes NSF data of a couple of employees to Office 365. Being working as a Technical Administrator, I did the same using the manual approach, which was pretty cumbersome and time-consuming. However, I need to perform the migration again for newly arrived NSF data. Besides this, there exist 2-3 NSF files wherein the data were not fully migrated due to the failure associated with the manual approach. Apart from that, for some NSF files, it came to notice that some of the data items like contacts and calendars were not migrated to Office 365 account.

Now, one of the challenging concern is that doing these data migration might consume a lot of time via the manual method. Hence, I am looking for some quick yet result-oriented solution to do the same. Please suggest some appropriate approaches, if any.”

The above-mentioned is one of the user-queries taken from a technical forum website. Undoubtedly, users find it extremely difficult to implement Lotus Notes to Office 365 using the manual approach. As we read and understand the above scenario, we get a clear picture of the complexities faced while performing NSF to O365 data migration manually.

Office 365, which is a pioneer cloud-based productivity suite providing impeccable features to efficiently work in the competitive enterprise world. Apart from that, it offers intelligent cloud services, various MS Office applications in a user-friendly interface. What makes it more interesting is the world-class security options. All these mind-blowing features provokes a Lotus Notes user to migrate to an improved cloud application like Office 365. With the help of this blog, a comprehensive understanding of the approach to perform re-run migration from Lotus Notes to Office 365 is thoroughly explained. So, let’s get started by knowing each of the data migration aspects in detail.

How to Re-run Migration for Lotus Notes to Office 365 Manually?

Well, when it comes to perform re-run migration from Lotus Notes to Office 365 using the manual approach i.e., IMAP connector, it is pretty complex. Now, there exist so many reasons behind the same. This includes it fails to implement migration for selective data items if in case it got missed in the initial migration process. One cannot retry the migration process again if there occurs any technical failure like abrupt power shut down, poor internet connectivity, etc.

It fails to perform re-run migration for NSF files having more than 1GB file size. Moreover, the process is quite time-consuming because of its lengthy and complicated steps. One needs to possess adequate technical expertise to implement this manual approach. In addition to that, it is not possible to transfer calendar data using IMAP connector, hence it must be exported manually.

What is the Best Approach for Re-run Migration from NSF to O365?

After understanding the challenges and failures associated with the manual approach, it can be considered as a cumbersome task. Therefore, it is best suggested to seek help from some result-driven third-party software. SysTools Lotus Notes to Office 365 Migration Tool is one of the power-packed yet recommended software by the experts.


It is the best alternative over the manual method for re-run migration from Lotus Notes to Office 365. It incorporated with best set of features wherein users can easily migrate single or bulk Lotus Notes NSF data files to Office 365 account. It provides date-filter option for transfer selective data from emails, contacts and calendars. It also provides an option to map source and destination user mailboxes via Fetch Users or Import CSV options. One can also prioritize mailboxes to be migrated from the software panel.

Here are the features associated with Re-run migration incorporated in the software:

re-run migration feature

  • Retry Failed Items: One can utilize this option, provided if the Lotus Notes data items were failed to get migrated to the destination Office 365 account due to technical failures.
  • Re-Run Full Migration: Once the migration gets completed, the software will perform a quick scan and will showcase, which all data are migrated. If by any chance, if the mailbox items like emails, contacts, etc. got missed to get selected. Then, one can re-run migration from Lotus Notes to Office 365 using this option for that particular data item.
  • Delta Migration: In case if the data migration is performed recently. Then, one can re-run migration for the newly arrived NSF data to Office 365 using this feature. Using which, it will save one’s valuable time as only the new data will be migrated, as the old data has been already transferred in the recent migration.

The Bottom Line

The procedure to perform re-run migration from Lotus Notes to Office 365 has been clearly elaborated in this write-up. Due to the complications caused by the manual approach, one can rely on the aforementioned trusted and recommended software by the experts and users.