move offlineimap spawning to inside the loop in case it crashes, include some explanatory comments

mail2mms.sh

@@ -19,13 +19,6 @@
 
 . ./.config
 
-if [ "$1" != -l ]; then
-
-  if ! pgrep offlineimap; then
-    offlineimap &
-  fi
-fi
-
 oldnew=0
 
 summary() {
@@ -45,13 +38,30 @@ summary() {
 }
 
 while true; do
+
+  # Start offlineimap if it's not running and we are not on the mailserver
+  # Sometimes it can crash, so it's in the loop here instead of at startup
+  
+  if [ "$1" != -l ]; then
+    if ! pgrep offlineimap; then
+      offlineimap &
+    fi
+  fi
+
+  # Count the number of new mails
   newnew=$(ls -1 ${inbox}/new | wc -l)
+
+  # If the number of new mails has increased  
   if [ ${newnew} -gt ${oldnew} ]; then
-      if [ "$1" = -l ]; then
+
+    # If we are on the mailserver, just mail the alert out from here
+    if [ "$1" = "-l" ]; then
       echo "$(summary)" \
       | mail -r ${addr} \
         -s "new mail [${newnew}]" \
         ${phone}
+
+    # Otherwise, use the smtp configuration from the config file to send it
     else
       echo "$(summary)" \
       | mail -r ${addr} \
@@ -64,6 +74,7 @@ while true; do
         ${phone}
     fi
   fi
+
   oldnew=${newnew}
   sleep 2m
 done