+
−\begin{verbatim}
+
− ----------------------------------------------------
+
−             |                   |                  |
+
− strength    | standard          |                  |
+
− of email    | modular,extensible|                  |
+
−             |                   |                  |
+
− ----------------------------------------------------
+
−             | big data transfer |                  |
+
− weaknesses  | too big for phone |                  |
+
− of email    |                   | spam             |
+
−             |                   |                  |
+
− ----------------------------------------------------
+
−             |                   |                  |
+
−             | opportunities of  | threats of       |
+
−             | market            | market           |
+
−             |                   |                  |
+
−\end{verbatim}