Email actions basically just want a clean string with addresses split by semicolons. So the trick is to tidy up your text field before you pass it in. Something like this does the job:
replace(trim(variables('RecipientList')), ' ', '')
That trims the ends and pulls out any random spaces that snuck in.
Couple of things I'd double-check too:
If the field comes back empty the send step will throw an error, so it's worth guarding against that
Stick to semicolons between addresses — commas will break it, Outlook's picky like that
And if your addresses are actually spread across multiple list rows instead of sitting in one field, you'd grab them with a Select and join() them together rather than this approach
Once you've got that clean semicolon string, just drop it into To, CC or BCC and it'll send fine
Vishnu WR
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