Go to the “Accounts” tab in Mail preferences.Pull down the “Mail” menu and choose “Preferences”.Open the “Mail” app in Mac OS if you have not done so already.Have an email account that you’d like to use Mail Drop with? Here’s how to enable that feature in Mail for MacOS: How to Enable Mail Drop on Other non-iCloud Email Accounts for Mac If for whatever reason Mail Drop is not enabled on that too, then you can follow the same instructions below to enable Mail Drop on any email account setup in Mail for Mac. Note this is not the only way you can use Mail Drop from the Mac, you can also just create an email address and set that up in Mail for Mac, which by default uses Mail Drop for large file transfers. Mail Drop allows you to send files up to 5GB in size by using the feature, but remember it requires uploading the entire Mail Drop file to iCloud, which then presents itself as a temporarily available download link to the recipient so that they can download and access the Mail Drop file.

It works quite well, and you can initiate Mail Drop sending from a Mac or an iOS device, and virtually any recipient can download the file via the link whether they have an Apple device or not. Instead, when using Mail Drop on Mac, the large file is uploaded temporarily to iCloud, and the recipient of the email gets a temporary download link to access that large file.

For the unfamiliar Mail Drop is a feature in Mail for Mac, iPhone, and iPad, that allows you to send and receive large files that would typically not be allowed over email due to strict file size limits of most email servers.

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