Hello @YvonneD051 ,
It looks like you're responding to a thread that's over a year old and only pertains to regular emails, not to the emails built in events.
There's a known issue that our devs are investigating where non-responder emails in events that were copied from a previous invite are being converted back into regular invite emails if they're not immediately sent/scheduled.
In the meantime, the only workaround would by to make the non-responder email from scratch, or to do any edits and scheduling all in one sitting if copying from an invite.
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