diff --git a/dev/Common/Html.js b/dev/Common/Html.js
index 08dc2b559..a34966981 100644
--- a/dev/Common/Html.js
+++ b/dev/Common/Html.js
@@ -1,5 +1,5 @@
 import { createElement } from 'Common/Globals';
-import { forEachObjectEntry, pInt } from 'Common/Utils';
+import { forEachObjectEntry, isArray, pInt } from 'Common/Utils';
 import { SettingsUserStore } from 'Stores/User/Settings';
 
 const
@@ -207,7 +207,8 @@ export const
 			bqLevel = parseInt(SettingsUserStore.maxBlockquotesLevel()),
 
 			result = {
-				hasExternals: false
+				hasExternals: false,
+				linkedData: []
 			},
 
 			findAttachmentByCid = cId => oAttachments.findByCid(cId),
@@ -269,6 +270,7 @@ export const
 			// Not supported by <template> element
 //			.replace(/<!doctype[^>]*>/gi, '')
 //			.replace(/<\?xml[^>]*\?>/gi, '')
+			.replace(/<(\/?)head(\s[^>]*)?>/gi, '')
 			.replace(/<(\/?)body(\s[^>]*)?>/gi, '<$1div class="mail-body"$2>')
 //			.replace(/<\/?(html|head)[^>]*>/gi, '')
 			// Fix Reddit https://github.com/the-djmaze/snappymail/issues/540
@@ -284,6 +286,21 @@ export const
 			nodeIterator.referenceNode.remove();
 		}
 
+		/**
+		 * Basic support for Linked Data (Structured Email)
+		 * https://json-ld.org/
+		 * https://structured.email/
+		 **/
+		tmpl.content.querySelectorAll('script[type="application/ld+json"]').forEach(oElement => {
+			// Could be array of objects or single object
+			try {
+				const data = JSON.parse(oElement.textContent);
+				(isArray(data) ? data : [data]).forEach(entry => result.linkedData.push(entry));
+			} catch (e) {
+				console.error(e, oElement.textContent);
+			}
+		});
+
 		tmpl.content.querySelectorAll(
 			disallowedTags
 			+ (0 < bqLevel ? ',' + (new Array(1 + bqLevel).fill('blockquote').join(' ')) : '')
diff --git a/dev/Model/Message.js b/dev/Model/Message.js
index a6868dc3e..4086be5cd 100644
--- a/dev/Model/Message.js
+++ b/dev/Model/Message.js
@@ -87,6 +87,12 @@ export class MessageModel extends AbstractModel {
 			size: 0,
 			readReceipt: '',
 			preview: null,
+			/**
+			 * Basic support for Linked Data (Structured Email)
+			 * https://json-ld.org/
+			 * https://structured.email/
+			 **/
+			linkedData: [],
 
 			attachments: ko.observableArray(new AttachmentCollectionModel),
 			threads: ko.observableArray(),
@@ -367,6 +373,7 @@ export class MessageModel extends AbstractModel {
 				let result = msgHtml(this);
 				this.hasExternals(result.hasExternals);
 				this.hasImages(!!result.hasExternals);
+				this.linkedData = result.linkedData;
 				body.innerHTML = result.html;
 				if (!this.isSpam && FolderUserStore.spamFolder() != this.folder) {
 					if ('always' === SettingsUserStore.viewImages()) {
diff --git a/dev/View/Popup/Compose.js b/dev/View/Popup/Compose.js
index 35a33fc1f..34a08babf 100644
--- a/dev/View/Popup/Compose.js
+++ b/dev/View/Popup/Compose.js
@@ -1415,7 +1415,13 @@ export class ComposePopupView extends AbstractViewPopup {
 				// Only used at send, not at save:
 				dsn: this.requestDsn() ? 1 : 0,
 				requireTLS: this.requireTLS() ? 1 : 0,
-				readReceiptRequest: this.requestReadReceipt() ? 1 : 0
+				readReceiptRequest: this.requestReadReceipt() ? 1 : 0,
+				/**
+				 * Basic support for Linked Data (Structured Email)
+				 * https://json-ld.org/
+				 * https://structured.email/
+				 **/
+				linkedData: []
 			},
 			recipients = draft ? [identity.email()] : this.allRecipients(),
 			sign = !draft && this.pgpSign() && this.canPgpSign(),
diff --git a/examples/eml/json-ld.eml b/examples/eml/json-ld.eml
new file mode 100644
index 000000000..099c3a37e
--- /dev/null
+++ b/examples/eml/json-ld.eml
@@ -0,0 +1,283 @@
+Return-Path: <json-ld@example.com>
+Delivered-To: json-ld@example.com
+MIME-Version: 1.0
+Date: Mon, 05 Feb 2024 12:37:15 +0000
+Content-Type: multipart/alternative;
+ boundary="46987ad0-df2c-4cc8-8c7b-20e34b1f9bbf-1"
+From: json-ld@example.com
+Message-ID: <2cb0cdd30d1a7ec8c810710da8dc14eedaf10e7e@example.com>
+TLS-Required: No
+Subject: test json-ld
+To: json-ld@example.com
+
+--46987ad0-df2c-4cc8-8c7b-20e34b1f9bbf-1
+Content-Type: text/plain; charset="utf-8"
+Content-Transfer-Encoding: quoted-printable
+
+test json-ld
+--46987ad0-df2c-4cc8-8c7b-20e34b1f9bbf-1
+Content-Type: text/html; charset="utf-8"
+Content-Transfer-Encoding: quoted-printable
+
+<!DOCTYPE html><html><head><meta http-equiv=3D"Content-Type" content=3D"t=
+ext/html; charset=3Dutf-8">
+<script type=3D"application/ld+json">
+[
+	{
+		"@context": "http://schema.org/",
+		"@type": "Person",
+		"name": "Jane Doe",
+		"jobTitle": "Professor",
+		"telephone": "(425) 123-4567",
+		"url": "http://www.janedoe.com"
+	},
+	{
+		"@context": {
+			"ical": "http://www.w3.org/2002/12/cal/ical#",
+			"xsd": "http://www.w3.org/2001/XMLSchema#",
+			"ical:dtstart": {
+				"@type": "xsd:dateTime"
+			}
+		},
+		"ical:summary": "Lady Gaga Concert",
+		"ical:location": "New Orleans Arena, New Orleans, Louisiana, USA",
+		"ical:dtstart": "2011-04-09T20:00:00Z"
+	},
+	{
+		"@context": {
+			"name": "http://schema.org/name",
+			"description": "http://schema.org/description",
+			"image": {
+				"@id": "http://schema.org/image",
+				"@type": "@id"
+			},
+			"geo": "http://schema.org/geo",
+			"latitude": {
+				"@id": "http://schema.org/latitude",
+				"@type": "xsd:float"
+			},
+			"longitude": {
+				"@id": "http://schema.org/longitude",
+				"@type": "xsd:float"
+			},
+			"xsd": "http://www.w3.org/2001/XMLSchema#"
+		},
+		"name": "The Empire State Building",
+		"description": "The Empire State Building is a 102-story landmark in New York City.",
+		"image": "http://www.civil.usherbrooke.ca/cours/gci215a/empire-state-building.jpg",
+		"geo": {
+			"latitude": "40.75",
+			"longitude": "73.98"
+		}
+	},
+	{
+		"@context": {
+			"gr": "http://purl.org/goodrelations/v1#",
+			"pto": "http://www.productontology.org/id/",
+			"foaf": "http://xmlns.com/foaf/0.1/",
+			"xsd": "http://www.w3.org/2001/XMLSchema#",
+			"foaf:page": {
+				"@type": "@id"
+			},
+			"gr:acceptedPaymentMethods": {
+				"@type": "@id"
+			},
+			"gr:hasBusinessFunction": {
+				"@type": "@id"
+			},
+			"gr:hasCurrencyValue": {
+				"@type": "xsd:float"
+			}
+		},
+		"@id": "http://example.org/cars/for-sale#tesla",
+		"@type": "gr:Offering",
+		"gr:name": "Used Tesla Roadster",
+		"gr:description": "Need to sell fast and furiously",
+		"gr:hasBusinessFunction": "gr:Sell",
+		"gr:acceptedPaymentMethods": "gr:Cash",
+		"gr:hasPriceSpecification": {
+			"gr:hasCurrencyValue": "85000",
+			"gr:hasCurrency": "USD"
+		},
+		"gr:includes": {
+			"@type": [
+				"gr:Individual",
+				"pto:Vehicle"
+			],
+			"gr:name": "Tesla Roadster",
+			"foaf:page": "http://www.teslamotors.com/roadster"
+		}
+	},
+	{
+		"@context": {
+			"name": "http://rdf.data-vocabulary.org/#name",
+			"ingredient": "http://rdf.data-vocabulary.org/#ingredients",
+			"yield": "http://rdf.data-vocabulary.org/#yield",
+			"instructions": "http://rdf.data-vocabulary.org/#instructions",
+			"step": {
+				"@id": "http://rdf.data-vocabulary.org/#step",
+				"@type": "xsd:integer"
+			},
+			"description": "http://rdf.data-vocabulary.org/#description",
+			"xsd": "http://www.w3.org/2001/XMLSchema#"
+		},
+		"name": "Mojito",
+		"ingredient": [
+			"12 fresh mint leaves",
+			"1/2 lime, juiced with pulp",
+			"1 tablespoons white sugar",
+			"1 cup ice cubes",
+			"2 fluid ounces white rum",
+			"1/2 cup club soda"
+		],
+		"yield": "1 cocktail",
+		"instructions": [
+			{
+				"step": 1,
+				"description": "Crush lime juice, mint and sugar together in glass."
+			},
+			{
+				"step": 2,
+				"description": "Fill glass to top with ice cubes."
+			},
+			{
+				"step": 3,
+				"description": "Pour white rum over ice."
+			},
+			{
+				"step": 4,
+				"description": "Fill the rest of glass with club soda, stir."
+			},
+			{
+				"step": 5,
+				"description": "Garnish with a lime wedge."
+			}
+		]
+	},
+	{
+		"@context": {
+			"dc11": "http://purl.org/dc/elements/1.1/",
+			"ex": "http://example.org/vocab#",
+			"xsd": "http://www.w3.org/2001/XMLSchema#",
+			"ex:contains": {
+				"@type": "@id"
+			}
+		},
+		"@graph": [
+			{
+				"@id": "http://example.org/library",
+				"@type": "ex:Library",
+				"ex:contains": "http://example.org/library/the-republic"
+			},
+			{
+				"@id": "http://example.org/library/the-republic",
+				"@type": "ex:Book",
+				"dc11:creator": "Plato",
+				"dc11:title": "The Republic",
+				"ex:contains": "http://example.org/library/the-republic#introduction"
+			},
+			{
+				"@id": "http://example.org/library/the-republic#introduction",
+				"@type": "ex:Chapter",
+				"dc11:description": "An introductory chapter on The Republic.",
+				"dc11:title": "The Introduction"
+			}
+		]
+	},
+	{
+		"@context": "https://www.w3.org/ns/activitystreams",
+		"@type": "Create",
+		"actor": {
+			"@type": "Person",
+			"@id": "acct:sally@example.org",
+			"name": "Sally"
+		},
+		"object": {
+			"@type": "Note",
+			"content": "This is a simple note"
+		},
+		"published": "2015-01-25T12:34:56Z"
+	},
+	{
+		"@context": "http://schema.org",
+		"@type": "FoodEstablishmentReservation",
+		"reservationNumber": "OT12345",
+		"reservationStatus": "http://schema.org/Confirmed",
+		"underName": {
+			"@type": "Person",
+			"name": "John Smith"
+		},
+		"reservationFor": {
+			"@type": "FoodEstablishment",
+			"name": "Wagamama",
+			"address": {
+				"@type": "PostalAddress",
+				"streetAddress": "1 Tavistock Street",
+				"addressLocality": "London",
+				"addressRegion": "Greater London",
+				"postalCode": "WC2E 7PG",
+				"addressCountry": "United Kingdom"
+			}
+		},
+		"startTime": "2027-04-10T08:00:00+00:00",
+		"partySize": "2"
+	},
+	{
+		"@context": "http://schema.org",
+		"@type": "ParcelDelivery",
+		"deliveryAddress": {
+			"@type": "PostalAddress",
+			"streetAddress": "757 Westwood Plaza",
+			"addressLocality": "Los Angeles",
+			"addressRegion": "CA",
+			"addressCountry": "US",
+			"postalCode": "90095"
+		},
+		"expectedArrivalUntil": "2016-11-12T12:00:00-09:00",
+		"carrier": {
+			"@type": "Organization",
+			"name": "FedEx"
+		},
+		"itemShipped": {
+			"@type": "Product",
+			"name": "A bottle of beer"
+		},
+		"partOfOrder": {
+			"@type": "Order",
+			"orderNumber": "159487-sh-1971",
+			"merchant": {
+				"@type": "Organization",
+				"name": "SomeRetailer.com"
+			}
+		}
+	}
+]
+</script>
+<script type=3D"application/ld+json">
+[
+{
+    "@context": "http://schema.org/",
+    "@type": "PromotionCard",
+    "image": "IMAGE_URL1",
+    "url": "PROMO_URL1",
+    "headline": "HEADLINE1",
+    "price": "PRICE1",
+    "priceCurrency": "PRICE_CURRENCY1",
+    "discountValue": "DISCOUNT_VALUE1"
+},
+{
+    "@context": "http://schema.org/",
+    "@type": "PromotionCard",
+    "image": "IMAGE_URL2",
+    "url": "PROMO_URL2",
+    "headline": "HEADLINE2",
+    "price": "PRICE2",
+    "priceCurrency": "PRICE_CURRENCY2",
+    "discountValue": "DISCOUNT_VALUE2"
+}
+]
+</script></head><body>
+Example of Linked Data (Structured Email)
+
+</body></html>
+--46987ad0-df2c-4cc8-8c7b-20e34b1f9bbf-1--
diff --git a/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Messages.php b/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Messages.php
index 6552ec0c1..96f42afa0 100644
--- a/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Messages.php
+++ b/snappymail/v/0.0.0/app/libraries/RainLoop/Actions/Messages.php
@@ -1066,6 +1066,12 @@ trait Messages
 			$oMessage->SubParts->append($oPart);
 
 			$sHtml = \MailSo\Base\HtmlUtils::BuildHtml($sHtml, $aFoundCids, $aFoundDataURL, $aFoundContentLocationUrls);
+
+			$aLinkedData = $this->GetActionParam('linkedData', []);
+			if ($aLinkedData) {
+				$sHtml = \str_replace('</head>', '<script type="application/ld+json">'.\json_encode($aLinkedData).'</script></head>', $sHtml);
+			}
+
 			$this->Plugins()->RunHook('filter.message-html', array($oAccount, $oMessage, &$sHtml));
 
 			// First add plain