Is it possible to import .eml files in to an Exchange Online account ?


  • We are looking to move to Exchange on-line over the coming months but we currently use Mimecast Email Archive to back up our email. We can download all our mail from the archive, the only problem is that they are in .eml format. My question is, can you import these files into the inbox so they can be archived on the Microsoft environment. I know that you can open the .eml in Outlook 2013 but we would want to import the mail so we can close the Mimecast account down.

    Any help would be appreciated



    Tuesday, October 15, 2013 1:15 PM

All replies

  • You can drag and drop .eml files into the Outlook folder structure, which will then be part of the user's mailbox.  Microsoft does not provide a tool for bulk .eml file import.  There may also be a 3rd party tool in this space, however I've not worked with Mimecast before.

    Mike Crowley | MVP
    My Blog -- Planet Technologies

    Monday, October 21, 2013 10:54 PM
  • Thanks Mike,

    I am currently working with Mimecast to find a solution so that we can keep our archive with them and continue with it using Office 365. Your solution of dragging file is one that I have been informed of before but we are looking at 3 years worth of email so it may be a bit of a mare to drag them all in.



    Tuesday, October 22, 2013 7:44 AM
  • I didn't really mean it as a suggestion, just pointing out that eml files are not a very good "archive" format. Maybe this code could help ya:

    Mike Crowley | MVP
    My Blog -- Planet Technologies

    Tuesday, October 22, 2013 12:16 PM
  • Yes, it is possible to import .eml files into Exchange online account with the help of third party software that is able to import unlimited EML email messages to Office 365 directly and without loss of data. It preserves all email components during the import process.

    Download the software –

    Thursday, April 27, 2017 2:37 AM
  • yes you can convert eml into pst and import into office 365 

    take help with this

    convert eml to pst with this free tool

    Saturday, August 19, 2017 10:49 AM
  • EML file conversion to PST file is not a difficult task if you know the correct solution for this. To convert EML files to PST format I suggest you to an advanced & effective utility to perform conversion of EML files & whole folder of EML files into a single PST with their attachments. It is one of the  effective solutions to convert EML files to PST format. Follow the link for for Download demo version this software -
    Thursday, December 21, 2017 7:16 AM
  • Kevin Crew, You can import EML files to Outlook 2013 with the help of manual method or third party tool like  GainTools EML to PST Converter. You can check below references:
    Monday, January 08, 2018 11:43 AM
  • To convert EML files to Exchange Online, you can use this solution it can easily convert unlimited .eml files into Outlook, Exchange Server, etc. Use free EML Converter download tool that helps to convert 10 .eml files to Exchange absolutely free. Read More >>
    Friday, May 18, 2018 12:32 PM