type.inbound
// url path ends with go2.aspx
and any(body.links,
strings.ends_with(.href_url.path, "go2.aspx")
// query params from href_url or ml.link_analysis contain a redirection string ending with a base64
// pattern intended to capture an encoded email passed as an additional parameter
and (
regex.contains(.href_url.query_params,
'[a-z]=[a-z0-9-]+\.[a-z]{2,3}.+[A-Za-z0-9+/=]$|=[^=]$|={3,}$'
)
or regex.icontains(ml.link_analysis(.).effective_url.query_params,
'[a-z]=[a-z0-9-]+\.[a-z]{2,3}.+[A-Za-z0-9+/=]$|=[^=]$|={3,}$'
)
)
)
and headers.mailer is null
and regex.icontains(body.html.inner_text, '(i\x{034F}c\x{034F}r\x{034F}os\x{034F}of\x{034F}|icrosof)|(office|o)\s?365')
Playground
Test against your own EMLs or sample data.