--- mblaze-1.1/mcom	2021-01-14 15:45:22.000000000 -0000
+++ mblaze-1.1f/mcom	2021-08-22 00:08:04.418851752 -0000
@@ -12,13 +12,13 @@ commajoin() {
 
 notmine() {
 	mine="$(maddr -a -h local-mailbox:alternate-mailboxes: "$MBLAZE/profile")"
-	grep -Fv -e "$mine"
+	grep -Fvi -e "$mine"
 }
 
 replyfrom() {
 	addrs="$(maddr -a -h reply-from: "$MBLAZE/profile")"
 	[ -z "$addrs" ] && addrs="$(maddr -a -h alternate-mailboxes: "$MBLAZE/profile")"
-	grep -F -e "$addrs"
+	grep -Fi -e "$addrs"
 }
 
 ouniq() {
@@ -358,8 +370,8 @@ fi
 			[ -z "$to" ] && to=$(mhdr -d -h from "$1")
 			printf 'To: %s\n' "$to"
 			printf 'Cc: %s\n' \
-			       "$(mhdr -d -A -h to:cc: "$1" |
-				       notmine |grep -Fv -e "$to" |
+			       "$(maddr -a -h to:cc: "$1" |
+				       notmine |grep -Fvi -e "$to" |
 				       ouniq |commajoin)"
 			printf 'Bcc: \n'
 			printf '%s\n' "$hdrs" | awk '{ print }' |