Correctly storing netmail flags (intransit, local, recv) with senders ID and packet name

app/Models/Address.php

@@ -191,7 +191,7 @@ class Address extends Model
 	public function echomails()
 	{
 		return $this->belongsToMany(Echomail::class,'echomail_seenby')
-			->withPivot(['sent_at','export_at','packet']);
+			->withPivot(['export_at','sent_at','sent_pkt']);
 	}
 
 	public function echomail_from()
@@ -743,6 +743,6 @@ class Address extends Model
 	 */
 	public function session(string $type): ?string
 	{
-		return ($x=$this->system->sessions->where('id',$this->zone_id)->first()) ? $x->pivot->{$type} : NULL;
+		return ($this->exists && ($x=$this->system->sessions->where('id',$this->zone_id)->first())) ? $x->pivot->{$type} : NULL;
 	}
 }