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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, confirm the following

  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 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 to a user whose credentials are known.
  3. If the source 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 source email service provider should allow large emails downloaded via IMAP without any throttling. 
  5. Your email service provider supports IMAP access to mailboxes. 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: 

GMail with less secure app access

Follow the instructions given here.
GMail with OAuth access Follow the instructions given here.

  1. 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
  1. Provide delegated access to mailboxes on O365 
Follow the instructions given here.
  1.  Suppress read receipts

Run the following cmdlet

Set-ImapSettings -SuppressReadReceipt $false cmdlet
  1. Enable IMAP access for O365 mailboxes 
Follow the instructions given here.

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: 

GMail with less secure app access

Follow the instructions given here.
GMail with OAuth access Follow the instructions given here.

  1. 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
  1. Provide delegated access to mailboxes on O365 
Follow the instructions given here.
  1.  Suppress read receipts

Run the following cmdlet

Set-ImapSettings -SuppressReadReceipt $false cmdlet
  1. Enable IMAP access for O365 mailboxes 
Follow the instructions given here.


 

Migrate data between mail platforms

Note: This step has to be executed for each mailbox to be migrated.
  • 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:
REQUEST TYPE DESCRIPTION
O365-GMAIL-IMAP
  • Use this request type to import data from a O365 account to GMAIL account (with Less Secure App Access).
  • Click here for the details of the request parameters.
GMAIL-O365-IMAP
  • Use this request type to import data from a GMAIL account (with Less Secure App Access) to O365 account.
  • Click here for the details of the request parameters.
YAHOO-O365-IMAP
  • Use this request type to import data from a YAHOO account to O365 account.
  • Click here for the details of the request parameters.
YAHOO-GMAIL-IMAP
  • Use this request type to import data from a YAHOO account to GMAIL account (with Less Secure App Access).
  • Click here for the details of the request parameters.
YAHOO-OTHER-IMAP
  • Use this request type to import data from a YAHOO account to OTHER IMAP account.
  • Click here for the details of the request parameters.
O365-O365-IMAP
  • Use this request type to migrate data from one mailbox to another on O365 using IMAP
  • Click here for the details of the request parameters.