Changing email provider, how to migrate old mails?

My company is currently using an IMAP email service provider but we will be changing to Gmail.

How can I backup all the previous emails to copy them again when we switch to Gmail?

Also I would like to migrate emails from my previous job, which used Gmail to this new email account.


Hope it's not confusing, thanks for the help.

Posted on May 10, 2018 4:17 PM

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4 replies

May 11, 2018 2:14 AM in response to jdvillegas

1 ) Enter in user library ( click on finder take cursor on top menu bar > Go then Hold option key and click on library ) > select mail and right click on copy mail and then right click on empty desktop and click on paste item , the V5 folder will be saved on the desktop .


( 2 ) Open mail application and take cursor on top menu bar > file > import mail boxes > import data > select apple mail > click on continue > select desktop > click on continue > the data will start importing and the bar will start loading and let it be completed .


( 3 ) Go to system preferences > internet accounts > select the web mail account and click on minus sign it will be deleted .


( 4 ) You can see the mail data is transferred in the bottom mail side bar but everything is empty there are no mails in sent , inbox or archive they all are empty but a folder " import " is visible click on drop down arrows of each folders .


( 5 ) And if you plan to switch from yahoo to google or even change the internet servicer provider the folder " import " is still saved in the empty mail application .


( 6 ) When you configure the mail account by taking cursor on top menu bar > click on add account > choose a mail provider and select the box and click on continue > add new web mail address > click on next > and type the password > and click on done you will be joined to the new server say yahoo ( that is still empty for your mail account as you recently joined this new server and no data is saved on their server , but still the mail folder " import " is in the mail application .

You can scatter the mails in the desired mail boxes .

User uploaded file


Note : While performing this step you will notice the fans will start running and the system will heat up but this a normal as the the data is transferred it will take time to stop the fans and system will cool down .


To transfer mails between two Macs they must be of same version ( enter in user library > click on finder take cursor on top menu bar and click on Go then hold option key > library > select mail folder and right click on it and click on copy mail .


Then on the empty desktop right click and click on paste item the entire V5 folder is saved with all mails in it .

Insert a usb stick in Mac and drag and drop V5 folder into it , right click on usb stick and eject it .

Into the second machine , insert usb stick and open mail application click on usb stick and open the mails .

May 11, 2018 7:58 PM in response to jdvillegas

hi there,

you can archive the emails to a local storage.

Preferences>Accounts>Mailbox behaviours.

Now select all the emails and click on Archive.

This will save your mails to the local storage of Mac mail and won't move no matter which mail account are you configuring.

moreover there are few third party tools that are helpful in getting your mails backed up to any storage location of your choice.

Archive emails in Mail on Mac - Apple Support

How to Backup Gmail on Apple ?

How to Backup Apple Mail?

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Changing email provider, how to migrate old mails?

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