>I have created a stationery in Outlook. I have enabled it for new messages. This works. For replies, this is off. However, sometimes, when I jump into a conversation, on the first reply I do, I would like to stationery to be there so others in the conversation can have my contact information.
>
>For now, when this is the case:
>
>1. Realize that I need the stationery in the middle of a reply
>2. Copy the text in progress
>3. Close the reply
>4. Go back in Stationery settings to enable the functionality on replies
>5. Click on the message reply
>6. Paste the text with the stationery which is now present
>7. Send the message
>8. Go back in Stationery settings to disable the functionality on replies
>
>I am sure there is a simpler way to achieve that.

In https://support.office.com/en-us/article/apply-stationery-backgrounds-or-themes-to-email-messages-e24fc237-62e1-4361-82a3-d8a7467d2b7e I don't see a way to retroactively apply a theme/stationery to an in-progress message. It looks like you have to copy/paste into a new message as you've outlined above, except that in the section titled "Apply Outlook stationery and themes to a single message", you should be able to do it for a single message, rather than turning it on and off globally.

Actually, you could try doing that to an in-progress message, maybe it will work.

UPDATE: there are some Google hits on using a macro for this e.g. https://www.slipstick.com/outlook/email/apply-outlook-stationery-replies-forwards/