I apologize for the experience you've had with an RSVP Block. What email client and version is the customer viewing the campaign in? We have come across cases where apostrophes will be replaced with encoded text in Outlook. This is something we are still in the process of collecting more information on as we continue to troubleshoot. Though we do not have a time estimate of when this experience will be resolved, as a w orkaround we suggest not using contractions. It's also important to note t here is a character limit and in some cases wording may need to be changed to fit.
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