* What does a return receipt look like to our user?
* How do we notify them of their arrival?
== Implementation Details ==
{|border=1 cellspacing=0 cellpadding=3
| MSG_FLAG_MDN_REPORT_NEEDED
| 0x00400000
|-
| MSG_FLAG_MDN_REPORT_SENT
| 0x00800000
|-
| MSG_FLAG_MDN_REPORT_REFUSED
| ''suggested addition for recording that a person refused to send a receipt''
|}
== Relevant Links ==