diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/BodyStructure.php b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/BodyStructure.php
index 11c77e330..070a27521 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Imap/BodyStructure.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Imap/BodyStructure.php
@@ -11,6 +11,8 @@
 
 namespace MailSo\Imap;
 
+use MailSo\Mime\ParameterCollection;
+
 /**
  * @category MailSo
  * @package Imap
@@ -19,9 +21,9 @@ class BodyStructure
 {
 	private string $sContentType;
 
-	private string $sCharset;
+	private array $aContentTypeParams;
 
-	private array $aBodyParams;
+	private string $sCharset;
 
 	private string $sContentID;
 
@@ -63,6 +65,11 @@ class BodyStructure
 		return $this->sContentType;
 	}
 
+	public function ContentTypeParameters() : array
+	{
+		return $this->aContentTypeParams;
+	}
+
 	public function Size() : int
 	{
 		return $this->iSize;
@@ -133,8 +140,8 @@ class BodyStructure
 	{
 		// https://datatracker.ietf.org/doc/html/rfc3156#section-4
 		return 'multipart/encrypted' === $this->sContentType
-		 && !empty($this->aBodyParams['protocol'])
-		 && 'application/pgp-encrypted' === \strtolower(\trim($this->aBodyParams['protocol']))
+		 && !empty($this->aContentTypeParams['protocol'])
+		 && 'application/pgp-encrypted' === \strtolower(\trim($this->aContentTypeParams['protocol']))
 		 // The multipart/encrypted body MUST consist of exactly two parts.
 		 && 2 === \count($this->aSubParts)
 		 && 'application/pgp-encrypted' === $this->aSubParts[0]->ContentType()
@@ -146,8 +153,8 @@ class BodyStructure
 	{
 		// https://datatracker.ietf.org/doc/html/rfc3156#section-5
 		return 'multipart/signed' === $this->sContentType
-		 && !empty($this->aBodyParams['protocol'])
-		 && 'application/pgp-signature' === \strtolower(\trim($this->aBodyParams['protocol']))
+		 && !empty($this->aContentTypeParams['protocol'])
+		 && 'application/pgp-signature' === \strtolower(\trim($this->aContentTypeParams['protocol']))
 		 // The multipart/signed body MUST consist of exactly two parts.
 		 && 2 === \count($this->aSubParts)
 		 && $this->aSubParts[1]->IsPgpSignature();
@@ -172,8 +179,8 @@ class BodyStructure
 
 	public function IsFlowedFormat() : bool
 	{
-		return !empty($this->aBodyParams['format'])
-			&& 'flowed' === \strtolower(\trim($this->aBodyParams['format']))
+		return !empty($this->aContentTypeParams['format'])
+			&& 'flowed' === \strtolower(\trim($this->aContentTypeParams['format']))
 			&& !\in_array($this->sMailEncodingName, array('base64', 'quoted-printable'));
 	}
 
@@ -255,20 +262,15 @@ class BodyStructure
 	public function GetPartByMimeIndex(string $sMimeIndex) : self
 	{
 		$oPart = null;
-		if (\strlen($sMimeIndex))
-		{
-			if ($sMimeIndex === $this->sPartID)
-			{
+		if (\strlen($sMimeIndex)) {
+			if ($sMimeIndex === $this->sPartID) {
 				$oPart = $this;
 			}
 
-			if (null === $oPart)
-			{
-				foreach ($this->aSubParts as /* @var $oSubPart \MailSo\Imap\BodyStructure */ $oSubPart)
-				{
+			if (null === $oPart) {
+				foreach ($this->aSubParts as /* @var $oSubPart \MailSo\Imap\BodyStructure */ $oSubPart) {
 					$oPart = $oSubPart->GetPartByMimeIndex($sMimeIndex);
-					if (null !== $oPart)
-					{
+					if (null !== $oPart) {
 						break;
 					}
 				}
@@ -281,60 +283,43 @@ class BodyStructure
 	private static function decodeAttrParameter(array $aParams, string $sParamName, string $sCharset) : string
 	{
 		$sResult = '';
-		if (isset($aParams[$sParamName]))
-		{
+		if (isset($aParams[$sParamName])) {
 			$sResult = \MailSo\Base\Utils::DecodeHeaderValue($aParams[$sParamName], $sCharset);
-		}
-		else if (isset($aParams[$sParamName.'*']))
-		{
+		} else if (isset($aParams[$sParamName.'*'])) {
 			$aValueParts = \explode("''", $aParams[$sParamName.'*'], 2);
-			if (2 === \count($aValueParts))
-			{
+			if (2 === \count($aValueParts)) {
 				$sCharset = isset($aValueParts[0]) ? $aValueParts[0] : \MailSo\Base\Enumerations\Charset::UTF_8;
-
 				$sResult = \MailSo\Base\Utils::ConvertEncoding(
 					\urldecode($aValueParts[1]), $sCharset, \MailSo\Base\Enumerations\Charset::UTF_8);
-			}
-			else
-			{
+			} else {
 				$sResult = \urldecode($aParams[$sParamName.'*']);
 			}
-		}
-		else
-		{
+		} else {
 			$sCharset = '';
 			$sCharsetIndex = -1;
 
 			$aFileNames = array();
-			foreach ($aParams as $sName => $sValue)
-			{
+			foreach ($aParams as $sName => $sValue) {
 				$aMatches = array();
-				if (\preg_match('/^'.\preg_quote($sParamName, '/').'\*([0-9]+)\*$/i', $sName, $aMatches))
-				{
+				if (\preg_match('/^'.\preg_quote($sParamName, '/').'\*([0-9]+)\*$/i', $sName, $aMatches)) {
 					$iIndex = (int) $aMatches[1];
-					if ($sCharsetIndex < $iIndex && false !== \strpos($sValue, "''"))
-					{
+					if ($sCharsetIndex < $iIndex && false !== \strpos($sValue, "''")) {
 						$aValueParts = \explode("''", $sValue, 2);
-						if (2 === \count($aValueParts) && \strlen($aValueParts[0]))
-						{
+						if (2 === \count($aValueParts) && \strlen($aValueParts[0])) {
 							$sCharsetIndex = $iIndex;
 							$sCharset = $aValueParts[0];
 							$sValue = $aValueParts[1];
 						}
 					}
-
 					$aFileNames[$iIndex] = $sValue;
 				}
 			}
 
-			if (\count($aFileNames))
-			{
+			if (\count($aFileNames)) {
 				\ksort($aFileNames, SORT_NUMERIC);
 				$sResult = \implode(\array_values($aFileNames));
 				$sResult = \urldecode($sResult);
-
-				if (\strlen($sCharset))
-				{
+				if (\strlen($sCharset)) {
 					$sResult = \MailSo\Base\Utils::ConvertEncoding($sResult,
 						$sCharset, \MailSo\Base\Enumerations\Charset::UTF_8);
 				}
@@ -353,8 +338,8 @@ class BodyStructure
 		$sContentTypeMain = '';
 		$sContentTypeSub = '';
 		$aSubParts = array();
-		$aBodyParams = array();
-		$sName = '';
+		$aContentTypeParams = array();
+		$sFileName = '';
 		$sCharset = ''; // \MailSo\Base\Enumerations\Charset::UTF_8 ?
 		$sContentID = '';
 		$sDescription = '';
@@ -362,20 +347,16 @@ class BodyStructure
 		$iSize = 0;
 		$iExtraItemPos = 0;  // list index of items which have no well-established position (such as 0, 1, 5, etc).
 
-		if (\is_array($aBodyStructure[0]))
-		{
+		if (\is_array($aBodyStructure[0])) {
 			// Process multipart body structure
 			$sContentTypeMain = 'multipart';
 			$sContentTypeSub = 'mixed'; // primary default
 			$sSubPartIDPrefix = '';
-			if (!\strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1])
-			{
+			if (!\strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1]) {
 				// This multi-part is root part of message.
 				$sSubPartIDPrefix = $sPartID;
 				$sPartID .= 'TEXT';
-			}
-			else if (\strlen($sPartID))
-			{
+			} else if (\strlen($sPartID)) {
 				// This multi-part is a part of another multi-part.
 				$sSubPartIDPrefix = $sPartID.'.';
 			}
@@ -387,18 +368,15 @@ class BodyStructure
 		 		("text" "plain" ("charset" "utf-8") …)
 				("text" "html" …)
 			 */
-			while ($iExtraItemPos < \count($aBodyStructure) && \is_array($aBodyStructure[$iExtraItemPos]))
-			{
+			while ($iExtraItemPos < \count($aBodyStructure) && \is_array($aBodyStructure[$iExtraItemPos])) {
 				$oPart = self::NewInstance($aBodyStructure[$iExtraItemPos], $sSubPartIDPrefix.$iIndex);
-				if (!$oPart)
-				{
+				if (!$oPart) {
 					return null;
 				}
 
 				// For multipart, we have no charset info in the part itself. Thus,
 				// obtain charset from nested parts.
-				if (!$sCharset)
-				{
+				if (!$sCharset) {
 					$sCharset = $oPart->Charset();
 				}
 
@@ -411,26 +389,20 @@ class BodyStructure
 			 * Now process the subparts containter like:
 				"alternative" ("boundary" "--boundary_id") …
 			 */
-			if ($iExtraItemPos < \count($aBodyStructure))
-			{
-				if (!\is_string($aBodyStructure[$iExtraItemPos]))
-				{
+			if ($iExtraItemPos < \count($aBodyStructure)) {
+				if (!\is_string($aBodyStructure[$iExtraItemPos])) {
 					return null;
 				}
 				$sContentTypeSub = \strtolower($aBodyStructure[$iExtraItemPos]);
 
 				++$iExtraItemPos;
-				if ($iExtraItemPos < \count($aBodyStructure) && \is_array($aBodyStructure[$iExtraItemPos]))
-				{
-					$aBodyParams = self::getKeyValueListFromArrayList($aBodyStructure[$iExtraItemPos]);
+				if ($iExtraItemPos < \count($aBodyStructure) && \is_array($aBodyStructure[$iExtraItemPos])) {
+					$aContentTypeParams = self::getKeyValueListFromArrayList($aBodyStructure[$iExtraItemPos]);
 				}
 			}
-		}
-		else if (\is_string($aBodyStructure[0]))
-		{
+		} else if (\is_string($aBodyStructure[0])) {
 			// Process simple (singlepart) body structure
-			if (7 > \count($aBodyStructure) || !\is_string($aBodyStructure[1]))
-			{
+			if (7 > \count($aBodyStructure) || !\is_string($aBodyStructure[1])) {
 				return null;
 			}
 
@@ -438,39 +410,33 @@ class BodyStructure
 			$sContentTypeSub = \strtolower($aBodyStructure[1]);
 
 			$aBodyParamList = $aBodyStructure[2];
-			if (\is_array($aBodyParamList))
-			{
-				$aBodyParams = self::getKeyValueListFromArrayList($aBodyParamList);
-				if (isset($aBodyParams['charset']))
-				{
-					$sCharset = $aBodyParams['charset'];
+			if (\is_array($aBodyParamList)) {
+				$aContentTypeParams = self::getKeyValueListFromArrayList($aBodyParamList);
+				if (isset($aContentTypeParams['charset'])) {
+					$sCharset = $aContentTypeParams['charset'];
+				}
+				$sFileName = self::decodeAttrParameter($aContentTypeParams, 'name', $sCharset);
+				if ($sFileName) {
+					$aContentTypeParams['name'] = $sFileName;
 				}
-
-				$sName = self::decodeAttrParameter($aBodyParams, 'name', $sCharset);
 			}
 
-			if (null !== $aBodyStructure[3])
-			{
-				if (!\is_string($aBodyStructure[3]))
-				{
+			if (null !== $aBodyStructure[3]) {
+				if (!\is_string($aBodyStructure[3])) {
 					return null;
 				}
 				$sContentID = $aBodyStructure[3];
 			}
 
-			if (null !== $aBodyStructure[4])
-			{
-				if (!\is_string($aBodyStructure[4]))
-				{
+			if (null !== $aBodyStructure[4]) {
+				if (!\is_string($aBodyStructure[4])) {
 					return null;
 				}
 				$sDescription = $aBodyStructure[4];
 			}
 
-			if (null !== $aBodyStructure[5])
-			{
-				if (!\is_string($aBodyStructure[5]))
-				{
+			if (null !== $aBodyStructure[5]) {
+				if (!\is_string($aBodyStructure[5])) {
 					return null;
 				}
 				$sMailEncodingName = $aBodyStructure[5];
@@ -478,24 +444,20 @@ class BodyStructure
 
 			$iSize = \is_numeric($aBodyStructure[6]) ? (int) $aBodyStructure[6] : -1;
 
-			if (!\strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1])
-			{
+			if (!\strlen($sPartID) || '.' === $sPartID[\strlen($sPartID) - 1]) {
 				// This is the only sub-part of the message (otherwise, it would be
 				// one of sub-parts of a multi-part, and partID would already be fully set up).
 				$sPartID .= '1';
 			}
 
 			$iExtraItemPos = 7;
-			if ('text' === $sContentTypeMain)
-			{
+			if ('text' === $sContentTypeMain) {
 				/**
 				 * A body type of type TEXT contains, immediately after the basic
 				 * fields, the size of the body in text lines.
 				 */
 				++$iExtraItemPos;
-			}
-			else if ('message' === $sContentTypeMain && 'rfc822' === $sContentTypeSub)
-			{
+			} else if ('message' === $sContentTypeMain && 'rfc822' === $sContentTypeSub) {
 				/**
 				 * A body type of type MESSAGE and subtype RFC822 contains,
 				 * immediately after the basic fields, the envelope structure,
@@ -503,9 +465,7 @@ class BodyStructure
 				 */
 				$iExtraItemPos += 3;
 			}
-		}
-		else
-		{
+		} else {
 			return null;
 		}
 
@@ -515,18 +475,14 @@ class BodyStructure
 		$sDisposition = '';
 		$sFileName = '';
 
-		if ($iExtraItemPos < \count($aBodyStructure))
-		{
+		if ($iExtraItemPos < \count($aBodyStructure)) {
 			$aDispList = $aBodyStructure[$iExtraItemPos];
-			if (\is_array($aDispList) && 1 < \count($aDispList))
-			{
-				if (!\is_string($aDispList[0]))
-				{
+			if (\is_array($aDispList) && 1 < \count($aDispList)) {
+				if (!\is_string($aDispList[0])) {
 					return null;
 				}
 				$sDisposition = $aDispList[0];
-				if (\is_array($aDispList[1]))
-				{
+				if (\is_array($aDispList[1])) {
 					$aDispositionParams = self::getKeyValueListFromArrayList($aDispList[1]);
 					$sFileName = self::decodeAttrParameter($aDispositionParams, 'filename', $sCharset);
 				}
@@ -536,13 +492,13 @@ class BodyStructure
 
 		$oStructure = new self;
 		$oStructure->sContentType = \strtolower($sContentTypeMain.'/'.$sContentTypeSub);
+		$oStructure->aContentTypeParams = $aContentTypeParams;
 		$oStructure->sCharset = $sCharset;
-		$oStructure->aBodyParams = $aBodyParams;
 		$oStructure->sContentID = $sContentID;
 		$oStructure->sDescription = $sDescription;
 		$oStructure->sMailEncodingName = \strtolower($sMailEncodingName);
 		$oStructure->sDisposition = \strtolower($sDisposition);
-		$oStructure->sFileName = \MailSo\Base\Utils::Utf8Clear($sFileName ?: $sName);
+		$oStructure->sFileName = \MailSo\Base\Utils::Utf8Clear($sFileName);
 		$oStructure->iSize = $iSize;
 		$oStructure->sPartID = $sPartID;
 		$oStructure->aSubParts = $aSubParts;
@@ -571,12 +527,9 @@ class BodyStructure
 	{
 		$aDict = array();
 		$iLen = \count($aList);
-		if (0 === ($iLen % 2))
-		{
-			for ($iIndex = 0; $iIndex < $iLen; $iIndex += 2)
-			{
-				if (\is_string($aList[$iIndex]) && \is_string($aList[$iIndex + 1]))
-				{
+		if (0 === ($iLen % 2)) {
+			for ($iIndex = 0; $iIndex < $iLen; $iIndex += 2) {
+				if (\is_string($aList[$iIndex]) && \is_string($aList[$iIndex + 1])) {
 					$aDict[\strtolower($aList[$iIndex])] = $aList[$iIndex + 1];
 				}
 			}
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Attachment.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Attachment.php
index 2f3f5635a..b4ac54835 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Attachment.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Attachment.php
@@ -99,6 +99,7 @@ class Attachment implements \JsonSerializable
 			'Uid' => (string) $this->iUid,
 			'MimeIndex' => (string) $this->oBodyStructure->PartID(),
 			'MimeType' => $this->oBodyStructure->ContentType(),
+			'MimeTypeParams' => $this->oBodyStructure->ContentTypeParameters(),
 			'FileName' => \MailSo\Base\Utils::SecureFileName($this->oBodyStructure->FileName(true)),
 			'EstimatedSize' => $this->oBodyStructure->EstimatedSize(),
 			'Cid' => $this->oBodyStructure->ContentID(),
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Message.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Message.php
index 70e7c740b..6cc00245a 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Message.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mail/Message.php
@@ -11,8 +11,8 @@
 
 namespace MailSo\Mail;
 
-use \MailSo\Base\Utils;
-use \MailSo\Imap\Enumerations\FetchType;
+use MailSo\Base\Utils;
+use MailSo\Imap\Enumerations\FetchType;
 
 /**
  * @category MailSo
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Attachment.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Attachment.php
index 10ef808da..b03a7e10b 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Attachment.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Attachment.php
@@ -151,15 +151,15 @@ class Attachment
 
 		$oAttachmentPart->Headers->append(
 			new Header(Enumerations\Header::CONTENT_TYPE,
-				$this->ContentType().';'.
-				(($oContentTypeParameters) ? ' '.$oContentTypeParameters->ToString() : '')
+				$this->ContentType().
+				($oContentTypeParameters ? '; '.$oContentTypeParameters : '')
 			)
 		);
 
 		$oAttachmentPart->Headers->append(
 			new Header(Enumerations\Header::CONTENT_DISPOSITION,
-				($this->IsInline() ? 'inline' : 'attachment').';'.
-				(($oContentDispositionParameters) ? ' '.$oContentDispositionParameters->ToString() : '')
+				($this->IsInline() ? 'inline' : 'attachment').
+				($oContentDispositionParameters ? '; '.$oContentDispositionParameters : '')
 			)
 		);
 
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Email.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Email.php
index 8a9c84152..ba41125f7 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Email.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Email.php
@@ -200,6 +200,11 @@ class Email implements \JsonSerializable
 		return \trim($sReturn);
 	}
 
+	public function __toString() : string
+	{
+		return $this->ToString();
+	}
+
 	#[\ReturnTypeWillChange]
 	public function jsonSerialize()
 	{
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/EmailCollection.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/EmailCollection.php
index b909f318f..adda686d7 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/EmailCollection.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/EmailCollection.php
@@ -66,6 +66,11 @@ class EmailCollection extends \MailSo\Base\Collection
 		return \implode(', ', $aReturn);
 	}
 
+	public function __toString() : string
+	{
+		return $this->ToString();
+	}
+
 	private function parseEmailAddresses(string $sRawEmails) : void
 	{
 //		$sRawEmails = \MailSo\Base\Utils::Trim($sRawEmails);
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Header.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Header.php
index 8f361b586..8681b266a 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Header.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Header.php
@@ -126,13 +126,6 @@ class Header
 		$this->oParameters->setParameter($sName, $sValue);
 	}
 
-	private function wordWrapHelper(string $sValue, string $sGlue = "\r\n ") : string
-	{
-		return \trim(\substr(\wordwrap($this->NameWithDelimitrom().$sValue,
-			74, $sGlue
-		), \strlen($this->NameWithDelimitrom())));
-	}
-
 	public function __toString() : string
 	{
 		$sResult = $this->sFullValue;
@@ -159,11 +152,12 @@ class Header
 		{
 			$oEmailCollection = new EmailCollection($this->sFullValue);
 			if ($oEmailCollection && $oEmailCollection->count()) {
-				$sResult = $oEmailCollection->ToString(true, false);
+				$sResult = $oEmailCollection->ToString(true);
 			}
 		}
 
-		return $this->NameWithDelimitrom().$this->wordWrapHelper($sResult);
+		// https://www.rfc-editor.org/rfc/rfc2822#section-2.1.1
+		return \wordwrap($this->NameWithDelimitrom() . $sValue, 78, "\r\n ");
 	}
 
 	public function IsSubject() : bool
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Message.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Message.php
index 94f4e25a1..ab84d32d8 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Message.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Message.php
@@ -342,7 +342,7 @@ class Message extends Part
 					}
 					$oPart->Headers->append(
 						new Header(Enumerations\Header::CONTENT_TYPE,
-							$aAttachments[0]->ContentType().'; '.$oParameters->ToString())
+							$aAttachments[0]->ContentType().'; '.$oParameters)
 					);
 
 					if ($resource = $aAttachments[0]->Resource()) {
@@ -427,11 +427,6 @@ class Message extends Part
 
 		foreach ($this->aHeadersValue as $sName => $mValue) {
 			if (!($bWithoutBcc && \strtolower(Enumerations\Header::BCC) === \strtolower($sName))) {
-				if (\is_object($mValue)) {
-					if ($mValue instanceof EmailCollection || $mValue instanceof Email || $mValue instanceof ParameterCollection) {
-						$mValue = $mValue->ToString();
-					}
-				}
 				$oRootPart->Headers->SetByName($sName, (string) $mValue);
 			}
 		}
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Parameter.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Parameter.php
index ba4f8dc85..2e20ffe09 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Parameter.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Parameter.php
@@ -15,7 +15,7 @@ namespace MailSo\Mime;
  * @category MailSo
  * @package Mime
  */
-class Parameter
+class Parameter implements \JsonSerializable
 {
 	private string $sName;
 
@@ -88,4 +88,18 @@ class Parameter
 
 		return $this->sName . '="' . $this->sValue . '"';
 	}
+
+	public function __toString() : string
+	{
+		return $this->ToString();
+	}
+
+	#[\ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		return array(
+			'name' => $this->sName,
+			'value' => $this->sValue
+		);
+	}
 }
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/ParameterCollection.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/ParameterCollection.php
index 9028be20e..af34acb40 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/ParameterCollection.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/ParameterCollection.php
@@ -81,10 +81,29 @@ class ParameterCollection extends \MailSo\Base\Collection
 				$aResult[] = $sLine;
 			}
 		}
-
 		return \count($aResult) ? \implode('; ', $aResult) : '';
 	}
 
+	public function __toString() : string
+	{
+		return $this->ToString();
+	}
+
+/*
+	#[\ReturnTypeWillChange]
+	public function jsonSerialize()
+	{
+		$aResult = array();
+		foreach ($this as $oParam) {
+			$aResult[$oParam->Name()] = $oParam->Value();
+		}
+		return array(
+			'@Object' => 'Collection/ParameterCollection',
+			'@Collection' => $aResult
+		);
+	}
+*/
+
 	private function reParseParameters() : void
 	{
 		$aDataToReParse = $this->getArrayCopy();
diff --git a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Part.php b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Part.php
index b15cc24c8..4ecd1c137 100644
--- a/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Part.php
+++ b/snappymail/v/0.0.0/app/libraries/MailSo/Mime/Part.php
@@ -51,7 +51,12 @@ class Part
 	{
 		return \trim(\strtolower($this->Headers->ValueByName(Enumerations\Header::CONTENT_TYPE)));
 	}
-
+/*
+	public function ContentTypeParameters() : ParameterCollection
+	{
+		return $this->Headers->ParametersByName(\MailSo\Mime\Enumerations\Header::CONTENT_TYPE);
+	}
+*/
 	public function ContentID() : string
 	{
 		return \trim($this->Headers->ValueByName(Enumerations\Header::CONTENT_ID));