diff --git a/README.md b/README.md
index ff57498..fd7e720 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,7 @@ be available in the PATH:
   * [bash](https://www.gnu.org/software/bash/bash.html)
   * [curl-impersonate](https://github.com/lwthiker/curl-impersonate), **or**
   * [Docker](https://www.docker.com/)
+  * [gawk](https://www.gnu.org/software/gawk/gawk.html) (gawk)
   * [HTML Tidy](https://www.html-tidy.org/) (tidy)
   * [XMLStarlet](https://xmlstar.sourceforge.net/) (xmlstarlet)
   * a sendmail-compatible MTA (sendmail)
@@ -48,8 +49,12 @@ Set `warnlimit` to the dollar amount below which an warning e-mail will be
 sent when the script is run. `lowmail` must be set to `yes` for an e-mail to
 actually be sent.
 
+Set `expirydays` to the number of days before expiry of the balance after which a
+warning e-mail will be sent. This defaults to 7. `lowmail` must be set to `yes`
+for an e-mail to actually be sent.
+
 Set `lowmail` to `yes` to have the script send an e-mail whenever the balance
-goes below `warnlimit`.
+goes below `warnlimit` or the expiry date is within `expirydays`.
 
 Set `alwaysmail` to `yes` to have the script send an e-mail every time it is
 run, regardless of the limit. Leave it blank to only mail below the warning
diff --git a/speakout-account-info b/speakout-account-info
index f6c7f92..d52176e 100755
--- a/speakout-account-info
+++ b/speakout-account-info
@@ -35,6 +35,7 @@ account=
 password=
 recipient=
 warnlimit=0
+expirydays=7
 alwaysmail=
 lowmail=
 quiet=
@@ -147,9 +148,23 @@ As of $(date), the balance remaining on the cellular number $NICEPHONENUM is
 <span style='font-size: medium'>\$$BALANCE</span> which expires $EXPIRY.
 EOF
 
+if awk -F/ -v EXPIRYDAYS="$expirydays" '{exit mktime($3 " " $1 " " $2 " 00 00 00") - systime() >= EXPIRYDAYS * 24*3600}' <<< "$EXPIRY"; then
+    readonly TIMEEXCEEDED=yes
+    cat >>"$CONTENTFILE" <<EOF
+        <span style='color: pink; font-weight: bold;'>This is expiring within $expirydays days!</span>
+EOF
+else
+    readonly TIMEEXCEEDED=
+fi
+
 if [[ -n "$LIMITEXCEEDED" ]]; then
     cat >>"$CONTENTFILE" <<EOF
         <span style='color: pink; font-weight: bold;'>This is below the warning threshold of \$$warnlimit!</span>
+EOF
+fi
+
+if [[ -n "$LIMITEXCEEDED" || -n "$TIMEEXCEEDED" ]]; then
+    cat >>"$CONTENTFILE" <<EOF
         <p>
         Add more money to your account now by
         <a href="https://www.speakout7eleven.ca/userinfo/activation/topup/an/$PHONENUM/">choosing an amount here</a>.
@@ -162,7 +177,7 @@ cat >>"$CONTENTFILE" <<EOF
 </body></html>
 EOF
 
-if [[ -n "$recipient" && ( -n "$alwaysmail" || ( -n "$lowmail" && -n "$LIMITEXCEEDED" ) ) ]]; then
+if [[ -n "$recipient" && ( -n "$alwaysmail" || ( -n "$lowmail" && ( -n "$LIMITEXCEEDED" || -n "$TIMEEXCEEDED" ) ) ) ]]; then
     STAGE='sending e-mail'
     (
     echo "To: $recipient"
diff --git a/speakoutinforc b/speakoutinforc
index b203b3b..6875174 100644
--- a/speakoutinforc
+++ b/speakoutinforc
@@ -12,6 +12,8 @@ recipient=$USER@localhost
 # Lower limit (in dollars) below which a warning e-mail is generated; defaults to 0
 # lowmail must be set to yes for an e-mail to actually be sent.
 warnlimit=5
+# Start warning this number of days before expiry
+expirydays=7
 # Send an e-mail when the balance goes below warnlimit
 lowmail=yes
 # Set to yes to always send an e-mail, regardless of warnlimit, empty to send