Drag and Drop email addresses between email windows

[SageM]

I often want to drag an email address from the To: field in one emails draft window into another email draft To: field. I can drag between the To: and CC: field in a singe window but not between windows. This would be a very helpful feature. Thanks!

[Jon]

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[ppono]

Mozilla, FF, seem like a 1 step forward 2 steps back as validating email addresses never get the validation link sent out. I am still waiting for one a month later. Way to go Mozilla 🤷‍♂️