Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
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With the tools that I have,
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Which tool do you have, is it 3rd party?
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Auto-reply with an attached document
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Generally, there is no in-built feature function/option within the Outlook to achieve your requirement. You may visit the link to submit your feedback/suggestion: https://feedbackportal.microsoft.com/feedback/forum/89a8afa3-2e1c-ec11-b6e7-0022481f8472