diff --git a/.latexmkrc b/.latexmkrc
index 9146604..8725ec0 100644
--- a/.latexmkrc
+++ b/.latexmkrc
@@ -1,8 +1,10 @@
+$aux_dir = "target";
 $bibtex_use = 2;
 $cleanup_includes_cusdep_generated = 1;
 $out_dir = "target";
 $pdf_mode = 5;
 $silent = 1;
+$xelatex = "xelatex -shell-escape %O %S";
 
 # Beamer-specific extensions
 $clean_ext = "nav snm %R-*.png";
diff --git a/assets/bad.sig b/assets/bad.sig
new file mode 100644
index 0000000..b9045ae
--- /dev/null
+++ b/assets/bad.sig
@@ -0,0 +1,8 @@
+Hi mate, how's it going?
+--
+arto
+Backend Engineer
+Big Tech Company
+No one cares
+E: arto@example.org
+P: +393284567890
diff --git a/assets/good.sig b/assets/good.sig
new file mode 100644
index 0000000..64e64f1
--- /dev/null
+++ b/assets/good.sig
@@ -0,0 +1,5 @@
+Hi mate, how's it going?
+--
+arto
+E: arto@example.org
+P: +393284567890
diff --git a/assets/muttrc-sig.conf b/assets/muttrc-sig.conf
new file mode 100644
index 0000000..a21265a
--- /dev/null
+++ b/assets/muttrc-sig.conf
@@ -0,0 +1,2 @@
+# Mutt config file
+set signature = "~/arto.sig"
diff --git a/get-assets.sh b/get-assets.sh
new file mode 100755
index 0000000..d2c4729
--- /dev/null
+++ b/get-assets.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+# The "slides" prefix is a workaround for latexmk cleanup
+# see: https://tex.stackexchange.com/questions/484484/clean-comment-cut-file-with-latexmk
+
+# Check if the files have already been downloaded
+set -- /target/*.jpg
+[ -f "$1" ] || exit 0
+
+wget -O target/slides-thunderbird-sig.jpg https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/gallery/images/2011-03-14-10-05-42-4bdd77.jpg
diff --git a/sections/signature.tex b/sections/signature.tex
new file mode 100644
index 0000000..81d6b16
--- /dev/null
+++ b/sections/signature.tex
@@ -0,0 +1,25 @@
+\section{Rule number 1: signatures}
+\begin{frame}{Good or bad?}
+    \lstinputlisting{assets/bad.sig}
+\end{frame}
+\begin{frame}{Good or bad?}
+    \lstinputlisting{assets/good.sig}
+\end{frame}
+\begin{frame}{Why?}
+    RFC 1855~\cite{rfc1855} clearly states that:
+
+    \begin{quote}
+      If you include a signature keep it short.  Rule of thumb
+      is no longer than 4 lines. Remember that many people pay for
+      connectivity by the minute, and the longer your message is,
+      the more they pay.
+    \end{quote}
+\end{frame}
+\begin{frame}{How to (Thunderbird)}
+    \centering
+    \includegraphics[scale=0.35]{target/slides-thunderbird-sig.jpg}
+\end{frame}
+\begin{frame}{How to (neomutt)}
+    \centering
+    \lstinputlisting[language=sh]{assets/muttrc-sig.conf}
+\end{frame}
diff --git a/slides.tex b/slides.tex
index dc7a62c..8ea4867 100644
--- a/slides.tex
+++ b/slides.tex
@@ -3,6 +3,10 @@
 
 % Packages
 \usepackage[english]{babel}     % Proper hyphenation
+\usepackage{listings}           % Side by side examples
+
+% Download pictures
+\write18{./get-assets.sh}
 
 % Setup titlepage data
 \title{Mail me baby one more time}
@@ -17,6 +21,7 @@
     \maketitle
 
     \input{sections/presentation}
+    \input{sections/signature}
 
     \nocite{*}
     \bibliography{refs}