Fyxer's main value-prop is that it'll automatically label your emails into categories like "to respond", "notification", "fyi", and other related groupings:
Fyxer AI Auto-Label Categorization
While this is useful in theory, you can't actually triage through each category, like you can with something like Superhuman Mail, which have proper split inboxes based on appended labels. So any emails you take action on are just marked as "read" but still show up in the label, so you continually re-read "archived" emails when visiting their version of a split inbox.
Not to mention, once you "respond" to an email requiring "to respond", the label stays on the email. So you responded, but it's still alerting you "to respond" to it. It's just noisy and not best practices when it comes to dealing with your email overload.
All of this with no way to modify the logic at all. Don't like which emails it's flagging "to respond" or "FYI"? You're out of luck.