Inital

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diff --git a/docs/DESIGN.md b/docs/DESIGN.md
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+# Repository structure
+
+The project is divided into several directories below which are nested gradle projects.
+
+## app
+
+This contains the highest level code such as UI and core logic.
+
+## backend
+
+APIs for sending and receiving messages
+
+## mail
+
+Low level code for dealing with internet mail protocols
+
+## plugins
+
+Additional, standalone, libraries used by K-9
+
+![modules](Modules.png)
+
+# Walkthrough
+
+To help you understand the design, the following sequence diagrams show typical flows through the
+classes. Each class is colour-coded by its top-level project.
+
+## Reading email
+
+![read email sequence](ReadEmail.png)
+
+![read email classes](ReadEmailClasses.png)
+
+## Sending email
+
+![send email sequence](SendEmail.png)
diff --git a/docs/Modules.png b/docs/Modules.png
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+++ b/docs/Modules.png
diff --git a/docs/ReadEmail.png b/docs/ReadEmail.png
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+++ b/docs/ReadEmail.png
diff --git a/docs/ReadEmailClasses.png b/docs/ReadEmailClasses.png
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+++ b/docs/ReadEmailClasses.png
diff --git a/docs/SendEmail.png b/docs/SendEmail.png
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+++ b/docs/SendEmail.png
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+++ b/docs/draw.io/ReadEmail.xml
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+<mxfile modified="2019-02-10T03:40:30.943Z" host="www.draw.io" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/9.3.1 Chrome/66.0.3359.181 Electron/3.0.6 Safari/537.36" etag="BVVYUPB0dM-kGAl1bI9W" version="10.1.9" type="device"><diagram id="W6TN20NKzh2WQxqSpMed" name="Page-1">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</diagram></mxfile>
\ No newline at end of file
diff --git a/docs/draw.io/ReadEmailClasses.xml b/docs/draw.io/ReadEmailClasses.xml
new file mode 100644
index 0000000..09cdb75
--- /dev/null
+++ b/docs/draw.io/ReadEmailClasses.xml
@@ -0,0 +1 @@
+<mxfile modified="2019-02-10T04:00:02.532Z" host="www.draw.io" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/9.3.1 Chrome/66.0.3359.181 Electron/3.0.6 Safari/537.36" etag="K0nVuP_f0XyCsGwlqD9i" version="10.2.0" type="device"><diagram id="Jxua7O0Ivqfy6dVKNSXa" name="Page-1">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</diagram></mxfile>
\ No newline at end of file
diff --git a/docs/draw.io/SendEmail.xml b/docs/draw.io/SendEmail.xml
new file mode 100644
index 0000000..c6acc03
--- /dev/null
+++ b/docs/draw.io/SendEmail.xml
@@ -0,0 +1 @@
+<mxfile modified="2019-02-10T04:02:43.187Z" host="www.draw.io" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/9.3.1 Chrome/66.0.3359.181 Electron/3.0.6 Safari/537.36" etag="sryRBrGrWx2Xdk4-LGi-" version="10.1.9" type="device"><diagram id="UKgcjDadpjXdOPNuiZzW" name="Page-1">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</diagram></mxfile>
\ No newline at end of file
diff --git a/docs/google-play/full_description.txt b/docs/google-play/full_description.txt
new file mode 100644
index 0000000..c51bb04
--- /dev/null
+++ b/docs/google-play/full_description.txt
@@ -0,0 +1,14 @@
+K-9 Mail is an open source email client with support for multiple accounts, search, IMAP push email, multi-folder sync, flagging, filing, signatures, BCC-self, PGP/MIME & more! 
+
+K-9 supports IMAP, POP3 and Exchange 2003/2007 (with WebDAV).
+
+Install the app "OpenKeychain: Easy PGP" to encrypt/decrypt your emails using OpenPGP.
+
+K-9 is a community developed project.  If you're interested in helping to make the most popular open source email client on Android even better, please join us!  You can find our bug tracker, source code, mailing list and wiki at https://github.com/thundernest/k-9
+We're always happy to welcome new developers, designers, documenters, bug triagers and friends. 
+
+If you're having trouble with K-9, please report a bug at https://github.com/thundernest/k-9 rather than just leaving a one-star review. We don't mind you telling the world that you're frustrated, but if you use our bug tracker, we have a better chance of fixing whatever's giving you a hard time.
+
+You can find K-9's release notes at: https://bit.ly/new-k9
+
+(People sometimes call K-9: K9, K9 Mail, K-9 Email, K9 Email, K9 E-Mail, k9mail or k9email.)
diff --git a/docs/google-play/short_description.txt b/docs/google-play/short_description.txt
new file mode 100644
index 0000000..71faccb
--- /dev/null
+++ b/docs/google-play/short_description.txt
@@ -0,0 +1 @@
+K-9 Mail is a 100% free and open source email client for Android.