
How to stop Sitecore ECM from spamming duplicate recipients
In the current version of ECM the same mail message will be sent several times to the same user if the user has registered several times to the same target audience with a different user but the same email. The issue is really that the email recipients are not filtered by distinct emails before the newsletter is dispatched. Personally I would have thought that ECM ensured that emails was distinct before it dispatches the mail but this is not the case ...