https://www.jotform.com/help/92-how-to-strip-headers-from-address-field-in-email-alerts/
Update The new email template no longer includes the headers from the address field. The below guide is only...
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https://blog.mockcertified.com/detect-masked-ip-address-in-email-headers/
10 practical tips to detect masked IP address in email headers, check VPN signs, hosting providers, timezone mismatches, SPF/DKIM alignment.
how toip addressemail headersdetectmasked
https://docs.customer.io/journeys/custom-mail-headers/
Email headers specify specific sending and return options for an email. When sending via SMTP, you can use custom headers to do a great many things: customize...
email headerssetcustomiodocs