タギングしたリードが特定のWEBサイトに訪れた際に通知が流れるようにしたいです。

I regret that I had to use an automated translation to approximate the question you're asking! If you have an English translator available, I can answer the question with complete accuracy.

It would also be good if you could copy and paste the Smart Campaign trigger, filter, and flow titles (since I can't translate from the screenshot).

It sounds like you want to pass {{Trigger.Web Page}} to the webhook, but I could be (very) wrong about the question.

I think Stanford is answering the question correctly even with the language barrier.

We have similar setting and we filter for those who we have email addresses for so that those alerts are actually actionable.

同じようなSlack Messageの設定してますが、Email Addressがある場合にだけ通知を行う設定にしています。（Smartlistの設定で。）

Payloadは下記ですが、問題なく表示されています。

{ "attachments": [{ "color": "#00a9e5", "fallback": "\n*{{campaign.name:default=}}:*\nLead: *{{lead.Full Name:default=(No Name)}}* ({{lead.Email Address:default=no email address}})\nCompany: *{{company.Company Name:default=(No Company)}}*\nInfer Rating: *{{lead.Infer: Rating:default=-}}*\nLead Owner: {{lead.Lead Owner First Name:default=}} {{lead.Lead Owner Last Name:default=}} ({{lead.Lead Owner Email Address:default=No Owner}})\nTerritory Owner: {{lead.Territory Owner:default=No Territory Owner}}\n", "fields": [{ "short": true, "title": "Company", "value": "{{company.Company Name:default=(No Company)}}" }, { "short": true, "title": "Job Title", "value": "{{lead.Job Title:default=Unknown}}" }, { "short": true, "title": "Phone", "value": "{{lead.Phone Number:default=Unknown}}" }, { "short": true, "title": "Lead Score", "value": "{{lead.Infer: Rating:default=}} : {{lead.Lead Score:default=}}" }, { "short": true, "title": "Owner", "value": "{{lead.Lead Owner First Name:default=}} {{lead.Lead Owner Last Name:default=}} (<@{{lead.Slack User Id}}|{{lead.Lead Owner Slack User Name:default=}}>)" }, { "short": true, "title": "Territory Owner", "value": "{{lead.Territory Owner:default=}}" } ], "pretext": "{{campaign.name:default=}} - {{trigger.Web Page}}", "title": "{{lead.Full Name:default=(No Name)}} ({{lead.Email Address:default=no email address}})", "title_link": "https://elastic.my.salesforce.com/{{lead.SFDC Id:default=}}" }] }