Adds: Email Security Tools

5_Privacy_Respecting_Software.md

@@ -231,7 +231,7 @@ Criptext is still in beta, but with an extremely smooth user experience, and no
 If you do not want to trust an email provider with your messages, you can host your own mail server. Without experience, this can be notoriously hard to correctly configure, especially when it comes to security. You may also find that cost, performance and features make it a less attractive option. If you do decide to go down this route, [Mail-in-a-box](https://mailinabox.email/), is an easy to deploy, open source mail server. It aims to promote decentralization, innovation, and privacy on the web, as well as have automated, auditable, and idempotent system configuration. Other ready-to-go self-hosted mail options include [Mailu](https://mailu.io/1.7/) and [Mail Cow](https://mailcow.email/), both of which are docker containers.
 
 ### Mail Clients
-Email clients are the programs used to interact with the mail server. For hosted email, then the web and mobile clients provided by your email service are usually adequate, and may be the most secure option. For self-hosted email, you will need to install and configure mail clients for web, desktop or mobile. A benefit of using an IMAP client, is that you will always have an offline backup of all email messages (which can then be encrypted and archived), and many applications let you aggregate multiple mailboxes for convenience. 
+Email clients are the programs used to interact with the mail server. For hosted email, then the web and mobile clients provided by your email service are usually adequate, and may be the most secure option. For self-hosted email, you will need to install and configure mail clients for web, desktop or mobile. A benefit of using an IMAP client, is that you will always have an offline backup of all email messages (which can then be encrypted and archived), and many applications let you aggregate multiple mailboxes for convenience. Desktop mail clients are not vulnerable to the common browser attacks, that their web app counterparts are.
 
 - **Desktop** - [Mozilla Thunderbird](https://www.thunderbird.net) is an open source, long-standing and secure desktop email client by Mozilla, for Windows, macOS, and Linux. If you are using ProtonMail, then you can use the [ProtonMail Bridge](https://protonmail.com/bridge/thunderbird), to sync your emails to either Thunderbird or Microsoft Outlook. In terms of security, the disadvantage, is that most desktop clients do not support 2FA, so it is important to keep your computer secured, however they are not vulnerable to the common browser attacks, that a web client would be. See also [eM Client](https://www.emclient.com)m which is a reputable but proprietary paid desktop client for Windows and Mac OS.
 - **Web** - If you are self-hosting your mail server, you will probably want a web-based email client. [RainLoop](http://www.rainloop.net) and [RoundCube](https://roundcube.net) are both good open source options.
@@ -259,6 +259,16 @@ Revealing your real email address online can put you at risk. Email aliasing all
 
 Alternatively you could host your own catch-all email service. [Mailu](https://github.com/Mailu/Mailu) can be configured to accept wildcards, or for Microsoft Exchange see [exchange-catchall](https://github.com/Pro/exchange-catchall)
 
+## Email Security Tools
+
+| Provider | Description |
+| --- | --- |
+**[Enigmail](https://www.enigmail.net)** | Mail client add-on, enabling the use of OpenPGP to easily encrypt, decrypt, verify and sign emails. Free and open source, Enifmail is compatible with Mozilla Thunderbird, Interlink Mail & News and Postbox. Their website contains thorough documentation and quick-start guides, once set up it is extremely convenient to use
+**[TorBirdy](https://trac.torproject.org/projects/tor/wiki/torbirdy)** |  Thunderbird extension, that configures it to make connections over the Tor network, in order to provide an additional layer of anonymity and security
+**[Email Privacy Tester](https://www.emailprivacytester.com/)** | Quick tool, that enables you to test whether your mail client "reads" your emails before you've opened them, and also checks what analytics, read-receipts or other tracking data your mail client allows to be sent back to the sender. The system is open source ([on GitLab](https://gitlab.com/mikecardwell/ept3)), developed by [Mike Cardwell](https://www.grepular.com/) and trusted, but if you do not want to use your real email, creating a second account with the same provider, should yield identical results
+
+#### Notable Mentions
+If you are using ProtonMail, then the [ProtonMail Bridge](https://protonmail.com/bridge/thunderbird) enables you to sync your emails to your own desktop mail client. It works well with Thunderbird, Microsoft Outlook and others
 
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