Add post and update page for estimated support

_posts/2021-07-26-estimated-support-update.md

@@ -0,0 +1,16 @@
+---
+title:  "Updated Estimated Support"
+date: 2021-07-26
+---
+
+In february 2020, we introduced [Estimated Support](/news/2020-02-13-estimated-support/), a “_functionality to help make technical choices_”. Ahead of the introduction of [Mail Privacy Protection in iOS 15](https://www.apple.com/ios/ios-15-preview/), and with similar features making their way in other email services like [Hey](https://www.hey.com/features/spy-pixel-blocker/) or [DuckDuckGo](https://spreadprivacy.com/introducing-email-protection-beta/), we think it’s a good time to update how estimated support is calculated.
+
+Instead of relying on Litmus’ [EmailClientMarketShare.com](https://www.emailclientmarketshare.com)’s data, we’re now showing a share of all the clients tested.
+
+If a feature is tested across 10 email clients, and that this feature is supported in six clients, partially supported in three clients and not supported in one client, its estimated support will be: 60% supported, 30% partially supported and 10% not supported.
+
+We believe this change will help us answer the question “_Does this work in a lot of email clients?_” even more easily.
+
+As a bonus, we can now show an estimated support [based on the settings](/news/2020-04-07-settings/) and the email clients that _you_ selected.
+
+Let us know what you think about this [on Twitter](https://twitter.com/caniemail/)! And if you see something wrong or have any questions, you can [report an issue on GitHub](https://github.com/hteumeuleu/caniemail/issues).

pages/support.html

@@ -7,7 +7,29 @@
 	<div class="post-inside">
 		<h1>About Estimated Support</h1>
 		<p>
-			In february 2020, we rolled out a new functionality called <em>Estimated support</em>. This will give you a clue of how widely supported every HTML and CSS features tested on the site is. The supported data is provided by <a href="https://www.emailclientmarketshare.com">EmailClientMarketShare.com</a>, a service ran by <a href="https://www.litmus.com">Litmus</a>.
+			In february 2020, we rolled out a new functionality called <em>Estimated support</em>. This will give you a clue of how widely supported every HTML and CSS features tested on the site is. In july 2021, this feature was updated to no longer reflect an estimation of email clients market share but instead to be a share of all the clients tested on Can I email.
+		</p>
+		<p>
+			If a feature is tested across <b>10 email clients</b>, and that this feature is <b>supported in six clients</b>, <b>partially supported in three clients</b> and <b>not supported in one client</b>, its estimated support will be: <b>60% supported, 30% partially supported and 10% not supported</b>.
+		</p>
+		<p>
+			The support value taken into account is the one of the latest version of an email client.
+		</p>
+		<p>
+			For historical purpose, the archive of this page is readable below.
+		</p>
+		<hr />
+		<p class="beta-tag-p">
+			<span class="beta-tag">Archive</span>
+		</p>
+		<style>
+			@media (min-width: 60rem) {
+				.post .beta-tag-p { position:sticky; top:1rem; margin-left:-5rem; margin-bottom:0 !important; max-height:0; }
+			}
+			.post .beta-tag { font-size:0.75em; }
+		</style>
+		<p>
+			Up until july 2021, the market share data was provided by <a href="https://www.emailclientmarketshare.com">EmailClientMarketShare.com</a>, a service ran by <a href="https://www.litmus.com">Litmus</a>.
 		</p>
 		<p>
 			<img src="/assets/images/posts/2020-02-13-estimated-support.png" alt="Screenshot of the estimated support functionality." width="260" height="140" />