Yes for eg mail from stale Outlook clients can have markup hazard for non-MS clients to handle Email From is a hash code instead of an address
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Managed to track down the styling error to email permissions. Some emails are owned by Admin and some by a User, and this breaks the styling.
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Thanks for this, that’s a learning for me!
Glad to hear you have mastered the worst of your issues - environments can be a most discouraging struggle, especially for others to reproduce problems.
Yes probably a clean install and restore backups is the ideal best move to skip learning challenges!
You may wish to connect with trentmu he seems to be in your part of the world.
cheers
john