Configure Email Settings
Click 'Admin panel' > 'Email' > 'Email settings'
The Email Settings module contains three settings, all of which are turned on by default.
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- Accept All Emails: Uncheck the checkbox if you want the system to stop accepting any incoming emails.
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Accept All Email Collaborators: Uncheck the checkbox if you don’t want to allow emails to have collaborators.
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Attachments: Uncheck this checkbox if you wish to prevent users from attaching and sending files in their emails.
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If you change any of these settings, click 'Submit' to save your changes.