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Question: How to change default mail program

The native Mail program is buggy. Need to change the default.

iMac, Mac OS X (10.6.8)

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Mar 17, 2018 1:24 PM in response to Mickey Faigen In response to Mickey Faigen

I'd have a look at what's going on with the system and particularly with mail; at what's happing and making it buggy.


The trigger here might be a corruption in a mail configuration file, a problem within mail itself, something weird with the mail server(s) involved, a hardware or network problem, insufficient system memory for current requirements, or a problem such as those that can be caused by anti-virus or anti-malware tools, or by some other software that might be resident on this Mac.


One helpful tool here is Etrecheck, and you can download and run that and then cut-and-paste a copy of the report here. From that, we can get a better idea of the configuration and its details.

Question marked as Helpful

Mar 18, 2018 5:09 AM in response to Mickey Faigen In response to Mickey Faigen

Do a backup, preferably 2 on 2 separate drives.


Quit Mail.


Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Go to Library/Containers/com.apple.mail. Move the folder com.apple.mail to your desktop. You must move the entire folder, not just the contents.


Restart, re-launch Mail and test. If the problem is solved, recreate any required Mail settings and import any emails you want to save from the folder on the desktop. You can then put the folder in the Trash. If the problem remains, return the folder to where you got it replacing the one that is there.


If that doesn’t solve it repeat the above using Containers/com.apple.MailServiceAgent.

Information learned from Linc Davis. Thanks to leonie for some information contained in this.


Mail crashing


Crashes/quits unexpectedly

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Mar 17, 2018 1:11 PM in response to Carolyn Samit In response to Carolyn Samit

Carolyn, thanks. But my Mail program won’t load properly and obstructs things from somewhere in the background. If there is no other way to undo it as default I think I have to delete it if possible. And not sure how to do that. Thoughts appreciated.

Mickey F.

Mar 17, 2018 1:11 PM

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Question marked as Helpful

Mar 17, 2018 1:24 PM in response to Mickey Faigen In response to Mickey Faigen

I'd have a look at what's going on with the system and particularly with mail; at what's happing and making it buggy.


The trigger here might be a corruption in a mail configuration file, a problem within mail itself, something weird with the mail server(s) involved, a hardware or network problem, insufficient system memory for current requirements, or a problem such as those that can be caused by anti-virus or anti-malware tools, or by some other software that might be resident on this Mac.


One helpful tool here is Etrecheck, and you can download and run that and then cut-and-paste a copy of the report here. From that, we can get a better idea of the configuration and its details.

Mar 17, 2018 1:24 PM

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Mar 17, 2018 2:02 PM in response to Mickey Faigen In response to Mickey Faigen

Mickey Faigen wrote:


It might have something to do with an anti-virus program that finds trouble seemingly everywhere.


Might? Add-on anti-malware tools are quite common sources of weirdness and instability for macOS users. As a test, remove the anti-malware tool per the vendor's instructions, reboot, and try again.

Mar 17, 2018 2:02 PM

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Mar 17, 2018 5:54 PM in response to Mickey Faigen In response to Mickey Faigen

First find out the reason why mail is slow you can use etrecheck and post the results , unwanted softwares , anti virus , apps installed are the major cause .

You can delete the mail application by entering in system preferences > internet account .

Select the account and click on subtract sign , the mail account will be deleted and if click on mail there are no mails in it .

But still all are saved on the server , click on mail on top menu bar > click on add mail and select the mail account and you have to click on continue , type the web mail address > next then type the web mail password and click on done to save .

Open mail app click on get new mail messages in all accounts icon .


User uploaded file

The mails will start downloading if it is laptop plug the charger and let the mail application be opened for hour or two until all mails get downloaded .

High network speed always helps .

Mar 17, 2018 5:54 PM

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Mar 17, 2018 6:48 PM in response to Mickey Faigen In response to Mickey Faigen

Mickey Faigen wrote:


The native Mail program is buggy. Need to change the default.

Don't launch Mail.app

Simply open, setup and use the alternative mail client of your choice. Open mail.app just one last time to set the Default in the Preferences>General

User uploaded file

Mar 17, 2018 6:48 PM

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Mar 17, 2018 7:02 PM in response to Mickey Faigen In response to Mickey Faigen

I would carry forward. Maybe the new mail client will have the default option setting as well.


There is no stand alone mac Mail.app program. Reinstalling the macOS on top of your existing macOS is the only way to get a renewed copy of the app.

Mar 17, 2018 7:02 PM

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Question marked as Helpful

Mar 18, 2018 5:09 AM in response to Mickey Faigen In response to Mickey Faigen

Do a backup, preferably 2 on 2 separate drives.


Quit Mail.


Go to Finder and select your user/home folder. With that Finder window as the front window, either select Finder/View/Show View options or go command - J. When the View options opens, check ’Show Library Folder’. That should make your user library folder visible in your user/home folder. Go to Library/Containers/com.apple.mail. Move the folder com.apple.mail to your desktop. You must move the entire folder, not just the contents.


Restart, re-launch Mail and test. If the problem is solved, recreate any required Mail settings and import any emails you want to save from the folder on the desktop. You can then put the folder in the Trash. If the problem remains, return the folder to where you got it replacing the one that is there.


If that doesn’t solve it repeat the above using Containers/com.apple.MailServiceAgent.

Information learned from Linc Davis. Thanks to leonie for some information contained in this.


Mail crashing


Crashes/quits unexpectedly

Mar 18, 2018 5:09 AM

Reply Helpful (1)

Mar 18, 2018 5:18 AM in response to Eric Root In response to Eric Root

Eric and others, Thank you so much. I was able open Mail easily. When I did an old problem with that program resurfaced. It replicates page after page without end. I believe I was able to sneak into preferences to alter the default mail program to Outlook, but will see. Is there a way to confirm settings

Mar 18, 2018 5:18 AM

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Mar 18, 2018 8:14 AM in response to Mickey Faigen In response to Mickey Faigen

See this article Mail General preferences on Mac - Apple Support

Default email reader

The email app to use for your email. Mail is set by default.

So , you can't change this settings , for other mail accounts , you have to create a new web mail account for that service like yahoo , outlook ...etc .

You can't mix up two accounts as individual server is secured and confined .

Mar 18, 2018 8:14 AM

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Question: How to change default mail program