How can I change the E-Mail header settings in the emails sent by a train company - e.g. Deutsche Bahn, so the mail receiver with Google now enabled would get a now card.How can I change the E-Mail header settings in
How can I change the E-Mail header settings in the emails sent by a train company - e.g. Deutsche Bahn, so the mail receiver with Google now enabled would get a now card.How can I change the E-Mail header settings in