As near as I can tell, that leading apostrophe is part of the error message, not my import file. I went ahead and did a bulk import with 86 actual emails. I received errors in two cases (which is bizarre in its own right because I’ve emailed these people). I removed the specific email for this post.
Your bulk user invite file was processed, 84 invites mailed with 2 error(s).
Here’s the log:
[2020-12-09 21:34:42 +0000] Invalid Email 'Nxxxx@lisg.ae
[2020-12-09 21:34:43 +0000] Invalid Email 'sxxx@stemk12.org