i am not expert in EMail delivery but here are few things
- mail content should not be AI generated
- content should not look spamy in 1st
- make more static content ( no remote loading )
- link should be single and not to spam page directly kind of landing or redirector
on link side
- use turnstile
- use redirector
- make phish host random
- increase lure path size
- enable bot mode on cloudflare
- enable turnstile
- if possible get domain with reputation
there is new solution whicch is using loading web inside ifrem