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diff --git a/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.pdf b/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.pdf
index 257e8ac..d2d4ce2 100644
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diff --git a/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.tex b/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.tex
index d85174f..02382cf 100644
--- a/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.tex
+++ b/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.tex
@@ -38,6 +38,32 @@ Al instalarlo ya podemos empezar con la configuración.
 
 \section{Configuración de Thunderbird}
 
+\begin{figure}[!htb]
+	\centering
+	\begin{subfigure}[tb]{0.45\textwidth}
+		\centering
+		\includegraphics[width=0.95\linewidth]{imgs/00-credentials.png}
+		\caption{Introducción de credenciales.}
+		\label{fig:credentials}
+	\end{subfigure}
+	\hfill
+	\begin{subfigure}[tb]{0.45\textwidth}
+		\centering
+		\includegraphics[width=0.95\linewidth]{imgs/01-configuration.png}
+		\caption{Configuración de correo con IMAP.}
+		\label{fig:configuration}
+	\end{subfigure}
+	\caption{Configuración de Thunderbird con cuenta de Google.}
+\end{figure}
+
+Para la configuración, lo primero que nos va a preguntar es por las credenciales
+de nuestra cuenta (figura \ref{fig:credentials}). En nuestro caso, se trata de
+una cuenta de la Universidad de Jaén, que es de Google. A partir de aquí,
+Thunderbird hará un análisis del servidor para averiguar qué protocolos están
+disponibles, y nos mostrará nuestras opciones (figura \ref{fig:configuration}).
+En el caso de GMail, tenemos como opciones IMAP ó POP3+SMTP. En nuestro caso,
+queremos usar IMAP.
+
 \pagebreak
 
 \section{Derechos de Autor y Licencia}
diff --git a/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.toc b/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.toc
index 0c587e4..81736ad 100644
--- a/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.toc
+++ b/1/ISO/assignments/t10-ej4-email/t10-ej4-email-naortega.toc
@@ -2,4 +2,4 @@
 \contentsline {section}{\numberline {1}Introducción}{3}{section.1}%
 \contentsline {section}{\numberline {2}Instalación de Thunderbird}{3}{section.2}%
 \contentsline {section}{\numberline {3}Configuración de Thunderbird}{3}{section.3}%
-\contentsline {section}{\numberline {4}Derechos de Autor y Licencia}{4}{section.4}%
+\contentsline {section}{\numberline {4}Derechos de Autor y Licencia}{5}{section.4}%