Additional migration options for mailboxes

The program offers some additional migration settings for individual mailboxes. To access them, open the JOBS tab and select a migration job from the menu on the left. Choose any mailbox from the list (Fig. 1.) and right-click it to see the available migration options.

MigratorO365-Additional options
Fig. 1. Accessing the shortcut menu.

Use the links below to read about each option.

Set priority

This option lets you decide about the order according to which the mailboxes will be migrated. The migration priority pattern starts with 1, which means that the mailbox(es) marked with 1 will be the first to be migrated. Furthermore, if you leave 1 as the default priority for all listed mailboxes, they will be migrated in alphabetical order. Note that once the priority is set, it will be visible in the first column from the left on the Mailboxes list.

To set the mailbox migration priority, either double-click any cell in the Priority column and enter a number (Fig. 2.) or select one or more mailboxes, right-click any highlighted row and choose the appropriate option from the shortcut menu.

Migrator Ex-set priority
Fig. 2. Changing the priority of a mailbox.

Match target mailbox

The Match target mailbox option in the shortcut menu lets you match a selected source mailbox with a new target mailbox or rematch it with the same target mailbox to restart the migration. Once you choose to change the target mailbox, the Match mailboxes window will open (Fig. 3.).

MigratorO365-Match mailboxes window2
Fig. 3. The Match mailboxes window.

Warning

If you choose to re-select the target mailbox that was already used in the migration process to start the migration from scratch, you will have to reset its migration state and manually remove all items that have been migrated to avoid the creation of duplicates. Once you perform these actions, you will be ready to start the migration again.

If you do not want to start the migration from zero, but migrate some new items (that appeared after the migration process was completed) to the previously selected target mailbox, do not use the Reset mailbox migration state feature or remove any items from that target mailbox. The best option is to choose the previously selected target mailbox and click the Rescan button. The migration will be restarted, including the new items only.

Depending on the option you have selected, you will be prompted either to provide details to create a new user or to select an existing user.

Reset mailbox migration state

CodeTwo Office 365 Migration stores information about the items that are being migrated between the source and target mailboxes in its cache. This solution allows the program to check the migration state each time the migration job is restarted and omit items that have already been migrated.

However, if you want the program to migrate all the data from the source mailbox to the target one anew, you need to use the Reset mailbox migration state option (Fig. 4.) or click Reset on the top menu bar. This will delete the state of previously performed migration for the selected mailboxes, allowing you to restart the migration as if it never took place.

Important

Before you restart the migration, besides resetting the migration state in the program, you also have to manually remove all the previously migrated items from the mailbox(es) on your target server to avoid having duplicates.

MigratorO365-Reset migration state
Fig. 4. Resetting the mailbox migration state.

View mailbox report

By choosing this option, you will generate a detailed report on the mailbox migration process (Fig. 5.). A mailbox report window provides detailed information on all items included in the migration. All counted items are split into four categories:

  • Migrated – items migrated successfully, 
  • Excluded – source items excluded from the migration (customized both in the Folder filter and Time filter option),
  • Failed all items that the program attempted to migrate but eventually skipped because of errors,
  • Total items – a summary of all three categories above.
migratorO365-mailbox report
Fig. 5. Mailbox migration report.

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