To give unsubscribe link in the mail using sendgrid XSMTPAPI header

问题

Can any one please tell me how to add unsubscribe link in the mail which is send by modifying the header.I am using Sendgrid header XSMTPAPI, although I found a relevant header called subscription track in the filters, but couldn't figure out how to use it.

回答1:

You would want to have an X-SMTPAPI header that looked something like this when broken out:

{ 
  filters: { 
    subscriptiontrack: { 
      settings: { 
        enable: 1,
        "text/html": "Unsubscribe <%Here%>", 
        "text/plain": "Unsubscribe Here: <% %>" 
      } 
    } 
  }
}

When you're sending the request, make sure you stringify the JSON for the header:

X-SMTPAPI: '{"filters":{"subscriptiontrack":{"settings":{"enable":1,"text/html":"Unsubscribe <%Here%>","text/plain":"Unsubscribe Here: <% %>"}}}}'

---

Also, as a side note, all of this can be found on the docs page for the X-SMTPAPI header:

• http://sendgrid.com/docs/API_Reference/SMTP_API/index.html
• http://sendgrid.com/docs/API_Reference/SMTP_API/apps.html

来源：https://stackoverflow.com/questions/16147030/to-give-unsubscribe-link-in-the-mail-using-sendgrid-xsmtpapi-header