Migrate email data between mail platforms

Overview

• Using LegacyFlo you can migrate user's live email data between mail platforms.
• LegacyFlo allows to migrate data from Gmail, O365, Exchange, Other IMAP server

Preparation

Preparation for source server

Before using LegacyFlo to access email data from source servers using the IMAP protocol or via the mail server API, confirm the following

Prerequisites for all mail servers

1. The emails to be migrated are available in the mailboxes hosted on the source server. Emails that have been downloaded using the POP protocol and deleted from the server, cannot be migrated using this option.
2. You should have the credentials to access the mailboxes to be migrated. You should have the rights and the capability to reset the passwords on the source in order to access the mailboxes OR should be able to delegate the access.
3. If the source server is hosted at your own premises, you have provisioned sufficient Internet bandwidth to transfer the mailbox data. 
4. The source email service provider should allow large emails downloaded via IMAP/API without any throttling. 
5. Your email service provider supports IMAP or API access to mailboxes. You have configured your email server to allow IMAP or API  access as mentioned in the sections below.

Additional prerequisites

Google Workspace - GMail

LegacyFlo can access GMail mailboxes using 3 methods

1. Accessing mailboxes using API (recommended)
2. Accessing mailboxes using domain-wide delegated access via IMAP
3. Accessing mailboxes configured to allow Less Secure IMAP Access

For each of these, the Google Workspace / GMail settings required are different and are given below

M365/O365

On M365. mailboxes hosted on Outlook can be accessed in two different ways:

1. Delegated API access (recommended)
2. Delegated IMAP access

The steps to prepare for the access is as given below

Preparation for destination server

Before using LegacyFlo to access email data from destination servers using the IMAP protocol, confirm the following

1. Your email service provider supports IMAP access to mailboxes.
2. You should have the rights and the capability to reset the passwords on the destination server in order to access the mailboxes.
3. If the destination server is hosted at your own premises, you have provisioned sufficient Internet bandwidth to transfer the mailbox data. (This will not apply to SkyConnect, Vaultastic, O365, Yahoo or GSuite.)
4. The destination email service provider should allow large email upload via IMAP without any throttling. 
5. You have configured your email server to allow IMAP access as mentioned in the sections below.
6. For Gmail Servers,

• In addition to the above, GMail servers need additional configuration depending on whether you are using less secure or OAuth access. Follow the instructions given in the table below: 

7. For O365 servers,

• Need confirmation from the O365 support team that there is no throttling on accessing mail from mailboxes on O365 using the IMAP protocol.
• O365 servers need the following configurations to be done

Migrate data between mail platforms

• Once the preparation is done, you can start the migration by submitting migration requests to LegacyFlo. 

• The request type used to submit a LegacyFlo request will depend on the source type. The table below gives the details of the preparation and request parameters for different source types: