Hi Paul,
Another possibility is that ‘Follow’ has been switched on. It causes member to get an email every time someone posts in the topic.
The Blue Follow button is in the Topic Header, right hand side, under the big red Forum Help/FAQs:
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Clicking “Follow” toggles it to “Unfollow”. Make sure it says ‘Follow’.
Also, make sure the ‘Notify me of follow-up replies via email’ tickbox at the bottom of the editor pane isn’t ticked accidentally. I’ve done it a couple of times, pressing the Tab key I think.
Dave
PS Not a problem, but please don’t use this thread. We’re trying to keep this type of query/glitch report in one place, which is EXISTING COMMENTS.