The “From” name and email on ReviewX’s automated emails come from your WordPress mail configuration, not from ReviewX itself — so changing it is a WordPress-level setting rather than a ReviewX one.

WPBeginner has a clear walkthrough for this: How to Change Sender Name in Outgoing WordPress Email.

If you want full control over deliverability rather than just the sender name — your own mail server, no monthly sending limits — connect your own SMTP directly in ReviewX instead. See Connecting Your Own SMTP Server, which lets you set the From Name and From Email as part of the same setup.