diff --git a/services/mailer/incoming/incoming.go b/services/mailer/incoming/incoming.go
index 092f738cd9..1b1be4c656 100644
--- a/services/mailer/incoming/incoming.go
+++ b/services/mailer/incoming/incoming.go
@@ -7,8 +7,10 @@ import (
 	"context"
 	"crypto/tls"
 	"fmt"
+	"mime"
 	net_mail "net/mail"
 	"regexp"
+	"slices"
 	"strings"
 	"time"
 
@@ -374,25 +376,56 @@ type Attachment struct {
 // getContentFromMailReader grabs the plain content and the attachments from the mail.
 // A potential reply/signature gets stripped from the content.
 func getContentFromMailReader(env *enmime.Envelope) *MailContent {
+	// get attachments
 	attachments := make([]*Attachment, 0, len(env.Attachments))
 	for _, attachment := range env.Attachments {
 		attachments = append(attachments, &Attachment{
-			Name:    attachment.FileName,
+			Name:    constructFilename(attachment),
 			Content: attachment.Content,
 		})
 	}
+	// get inlines
 	inlineAttachments := make([]*Attachment, 0, len(env.Inlines))
 	for _, inline := range env.Inlines {
 		if inline.FileName != "" && inline.ContentType != "text/plain" {
 			inlineAttachments = append(inlineAttachments, &Attachment{
-				Name:    inline.FileName,
+				Name:    constructFilename(inline),
 				Content: inline.Content,
 			})
 		}
 	}
+	// get other parts (mostly multipart/related files, these are for example embedded images in an html mail)
+	otherParts := make([]*Attachment, 0, len(env.Inlines))
+	for _, otherPart := range env.OtherParts {
+		otherParts = append(otherParts, &Attachment{
+			Name:    constructFilename(otherPart),
+			Content: otherPart.Content,
+		})
+	}
 
 	return &MailContent{
 		Content:     reply.FromText(env.Text),
-		Attachments: append(attachments, inlineAttachments...),
+		Attachments: slices.Concat(attachments, inlineAttachments, otherParts),
 	}
 }
+
+// constructFilename interprets the mime part as an (inline) attachment and returns its filename
+// If no filename is given it guesses a sensible filename for it based on the filetype.
+func constructFilename(part *enmime.Part) string {
+	if strings.TrimSpace(part.FileName) != "" {
+		return part.FileName
+	}
+
+	filenameWOExtension := "unnamed_file"
+	if strings.TrimSpace(part.ContentID) != "" {
+		filenameWOExtension = part.ContentID
+	}
+
+	fileExtension := ".unknown"
+	mimeExtensions, err := mime.ExtensionsByType(part.ContentType)
+	if err == nil && len(mimeExtensions) != 0 {
+		// just use the first one we find
+		fileExtension = mimeExtensions[0]
+	}
+	return filenameWOExtension + fileExtension
+}
diff --git a/services/mailer/incoming/incoming_test.go b/services/mailer/incoming/incoming_test.go
index fe11c9e5c6..2ffaac57ae 100644
--- a/services/mailer/incoming/incoming_test.go
+++ b/services/mailer/incoming/incoming_test.go
@@ -4,6 +4,7 @@
 package incoming
 
 import (
+	"encoding/base64"
 	"strings"
 	"testing"
 
@@ -194,4 +195,191 @@ func TestGetContentFromMailReader(t *testing.T) {
 	require.NoError(t, err)
 	assert.Equal(t, "mail content without signature", content.Content)
 	assert.Empty(t, content.Attachments)
+
+	// Some versions of Outlook send inline attachments like this, inside a multipart/related part.
+	// the attached image is from: https://openmoji.org/library/emoji-1F684
+	mailString = "Content-Type: multipart/related; boundary=\"=_related boundary=\"\r\n" +
+		"\r\n" +
+		"This text is for clients unable to decode multipart/related with multipart/alternative.\r\n" +
+		"\r\n" +
+		"--=_related boundary=\r\n" +
+		"Content-Type: multipart/alternative; boundary=\"=_alternative boundary=\"\r\n" +
+		"\r\n" +
+		"\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=\r\n" +
+		"Content-Type: text/plain\r\n" +
+		"\r\n" +
+		"This is the plaintext.\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=\r\n" +
+		"Content-Type: text/html\r\n" +
+		"\r\n" +
+		"<p>This is a mail with multipart/related. Here is an image sent with a filename.</p>\r\n" +
+		"<img src=cid:_1_2845>\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=--\r\n" +
+		"\r\n" +
+		"--=_related boundary=\r\n" +
+		"Content-Transfer-Encoding: base64\r\n" +
+		"Content-Type: image/png;\r\n" +
+		"	name=\"image001.png\"\r\n" +
+		"Content-ID: <_1_2845>\r\n" +
+		"\r\n" +
+		"iVBORw0KGgoAAAANSUhEUgAAAEAAAAAiCAYAAADvVd+PAAAFLUlEQVRo3t2ZX0iTXxjHP3u35qvT\r\n" +
+		"6ZzhzKFuzPQq9WKQZS6FvLQf3Wh30ViBQXnViC5+LVKEiC6DjMQgCCy6NChoIKwghhcR1bJ5s5Ei\r\n" +
+		"LmtNs/05XYT7Vercaps/94Xn4uU95znvOc/3+XdehRBCsM1YXl7G6/Xi8Xh49uwZMzMzhEIhFhcX\r\n" +
+		"+fbtW87WbW1tRbVdmxZC8PTpU8bGxrh//z5fv37dcJxGo2HXrl1ZWVOhUPzybDAYUOSbAYlEgjt3\r\n" +
+		"7nD58mVmZ2cBkCSJ1tZWDhw4wP79+2lpaUGv16PX61Gr1Tm3RN7w/Plz0d7eLgABCKPRKJxOp3j/\r\n" +
+		"/r3YLuTlAD5+/ChOnDiR3HhdXZ24e/euiMfjYruRcxe4evUqV65c4fPnz6hUKrq7uzl06NA6v157\r\n" +
+		"19bWlrbueDzOq1evmJ6eJhQKZRww9+3blzsXWFpaEqdOnUpaPV2ZmJjYUveLFy+Ew+EQFRUVGev/\r\n" +
+		"WTQaTW4Y8OjRIxwOB4FAAEmS0Gq1lJWVpZwTjUaZm5vDZrPhdrs3HOP3+3E6nTx48IC1zy4uLqas\r\n" +
+		"rAy1Wr0uym8FnU6X3TT46dMnzp8/z82bNwHQarU0NTVRUlKScl44HMbn8wFQU1Oz7n0sFuP69etc\r\n" +
+		"unSJ5eVllEole/bswWAwbKk7FSRJyl4a/NnqSqWS+vp6jEZjSqskEglmZ2cJBoMIIbBYLExNTWEw\r\n" +
+		"GJJjvF4vDoeD6elpAKqrqzGbzVlJj5Ik/T0D/tTqS0tL+Hw+VlZWUKlUDAwMMDQ0RGlpKQArKyu4\r\n" +
+		"XC6uXbtGLBZDlmUaGxuprKzMajGmyrfVY7EYfr+fDx8+ANDS0sLo6ChWqzU5xu12c/r0aXw+HwqF\r\n" +
+		"gtraWkwmE0qlMutZSpVPq8/NzeH3+4lGo5SUlOByuRgcHESl+u8zLly4wMjICAClpaU0NTUlWZEL\r\n" +
+		"ZBwDfo/wDQ0NKa0ej8dZWFggEAgQiUQA6Onp4caNG5jN5l/GTk1N0dnZmTab8sqA+fl5jh07hsfj\r\n" +
+		"AUCWZXbv3g1AIBBYR/NoNEokEuHLly8kEgkATCYTQ0NDHD9+fFOGrKW2jfRmGxqNJr1CaHJyUuj1\r\n" +
+		"+j8qNiRJEp2dneL27dtidXU15TrhcFhYLJa/Km4ykeLi4tSF0O++Xl9fz5EjR9Dr9SlPtry8nKqq\r\n" +
+		"KsxmM1arFa1Wm7ZVQqEQDx8+5N27dznvTG022+YMmJycFEajUQBClmUxMjIiYrGYKDSwVQ3f3t4u\r\n" +
+		"3rx5k1LJy5cvhd1uF83NzaKoqChvFP5b6e3t/fUAMrX64uKiOHnypFAoFDtm0z9Ll14nVACRSIQz\r\n" +
+		"Z84wPj4OwMGDBxkbG6OxsXFT/7l37x6Dg4PMz89TJEn0VVXwT2U5dUVq1DlOXdmCsrwcVTQapaen\r\n" +
+		"B4/HgyzLDA8Pc+7cOSRJ2nTixYsXGR4eBsBaWsK/xmrqitTsSIyOjgpAmEwm8fbt27QCx969e3ck\r\n" +
+		"5TdyAfr6+gQgxsfH046ct27dEjqdbscfQG9vr1CtNRiZVMR2ux273U4hQOru7gbA5XLh9Xr5H/wn\r\n" +
+		"yS9WV1dFR0dHQfh0ptLR0fGjDgiHw8LpdIqGhoYdm9P/RCwWS3qXok+ePOHs2bO8fv06eZ3c39+X\r\n" +
+		"7AZ3MlK2wzMzMwwMDPD48WMAamtr6e/vo7m5uWBCwKYMWFhYoK2tjWAwiEaj4ejRXmw2W8oCqaAO\r\n" +
+		"wO1209XVhSzLHD5s+3F5UGAwGo2bt8OhUEjU1NQUdBDc8s9QMBhkYmIieVVVaLDZbHwHmmIQk3rD\r\n" +
+		"exgAAAAASUVORK5CYII=\r\n" +
+		"\r\n" +
+		"--=_related boundary=--\r\n" +
+		"\r\n"
+
+	env, err = enmime.ReadEnvelope(strings.NewReader(mailString))
+	require.NoError(t, err)
+	content = getContentFromMailReader(env)
+	assert.Equal(t, "This is the plaintext.", content.Content)
+	assert.Len(t, content.Attachments, 1)
+	assert.Equal(t, "image001.png", content.Attachments[0].Name)
+	expectedAttachment, err := base64.StdEncoding.DecodeString(
+		"iVBORw0KGgoAAAANSUhEUgAAAEAAAAAiCAYAAADvVd+PAAAFLUlEQVRo3t2ZX0iTXxjHP3u35qvT\r\n" +
+			"6ZzhzKFuzPQq9WKQZS6FvLQf3Wh30ViBQXnViC5+LVKEiC6DjMQgCCy6NChoIKwghhcR1bJ5s5Ei\r\n" +
+			"LmtNs/05XYT7Vercaps/94Xn4uU95znvOc/3+XdehRBCsM1YXl7G6/Xi8Xh49uwZMzMzhEIhFhcX\r\n" +
+			"+fbtW87WbW1tRbVdmxZC8PTpU8bGxrh//z5fv37dcJxGo2HXrl1ZWVOhUPzybDAYUOSbAYlEgjt3\r\n" +
+			"7nD58mVmZ2cBkCSJ1tZWDhw4wP79+2lpaUGv16PX61Gr1Tm3RN7w/Plz0d7eLgABCKPRKJxOp3j/\r\n" +
+			"/r3YLuTlAD5+/ChOnDiR3HhdXZ24e/euiMfjYruRcxe4evUqV65c4fPnz6hUKrq7uzl06NA6v157\r\n" +
+			"19bWlrbueDzOq1evmJ6eJhQKZRww9+3blzsXWFpaEqdOnUpaPV2ZmJjYUveLFy+Ew+EQFRUVGev/\r\n" +
+			"WTQaTW4Y8OjRIxwOB4FAAEmS0Gq1lJWVpZwTjUaZm5vDZrPhdrs3HOP3+3E6nTx48IC1zy4uLqas\r\n" +
+			"rAy1Wr0uym8FnU6X3TT46dMnzp8/z82bNwHQarU0NTVRUlKScl44HMbn8wFQU1Oz7n0sFuP69etc\r\n" +
+			"unSJ5eVllEole/bswWAwbKk7FSRJyl4a/NnqSqWS+vp6jEZjSqskEglmZ2cJBoMIIbBYLExNTWEw\r\n" +
+			"GJJjvF4vDoeD6elpAKqrqzGbzVlJj5Ik/T0D/tTqS0tL+Hw+VlZWUKlUDAwMMDQ0RGlpKQArKyu4\r\n" +
+			"XC6uXbtGLBZDlmUaGxuprKzMajGmyrfVY7EYfr+fDx8+ANDS0sLo6ChWqzU5xu12c/r0aXw+HwqF\r\n" +
+			"gtraWkwmE0qlMutZSpVPq8/NzeH3+4lGo5SUlOByuRgcHESl+u8zLly4wMjICAClpaU0NTUlWZEL\r\n" +
+			"ZBwDfo/wDQ0NKa0ej8dZWFggEAgQiUQA6Onp4caNG5jN5l/GTk1N0dnZmTab8sqA+fl5jh07hsfj\r\n" +
+			"AUCWZXbv3g1AIBBYR/NoNEokEuHLly8kEgkATCYTQ0NDHD9+fFOGrKW2jfRmGxqNJr1CaHJyUuj1\r\n" +
+			"+j8qNiRJEp2dneL27dtidXU15TrhcFhYLJa/Km4ykeLi4tSF0O++Xl9fz5EjR9Dr9SlPtry8nKqq\r\n" +
+			"KsxmM1arFa1Wm7ZVQqEQDx8+5N27dznvTG022+YMmJycFEajUQBClmUxMjIiYrGYKDSwVQ3f3t4u\r\n" +
+			"3rx5k1LJy5cvhd1uF83NzaKoqChvFP5b6e3t/fUAMrX64uKiOHnypFAoFDtm0z9Ll14nVACRSIQz\r\n" +
+			"Z84wPj4OwMGDBxkbG6OxsXFT/7l37x6Dg4PMz89TJEn0VVXwT2U5dUVq1DlOXdmCsrwcVTQapaen\r\n" +
+			"B4/HgyzLDA8Pc+7cOSRJ2nTixYsXGR4eBsBaWsK/xmrqitTsSIyOjgpAmEwm8fbt27QCx969e3ck\r\n" +
+			"5TdyAfr6+gQgxsfH046ct27dEjqdbscfQG9vr1CtNRiZVMR2ux273U4hQOru7gbA5XLh9Xr5H/wn\r\n" +
+			"yS9WV1dFR0dHQfh0ptLR0fGjDgiHw8LpdIqGhoYdm9P/RCwWS3qXok+ePOHs2bO8fv06eZ3c39+X\r\n" +
+			"7AZ3MlK2wzMzMwwMDPD48WMAamtr6e/vo7m5uWBCwKYMWFhYoK2tjWAwiEaj4ejRXmw2W8oCqaAO\r\n" +
+			"wO1209XVhSzLHD5s+3F5UGAwGo2bt8OhUEjU1NQUdBDc8s9QMBhkYmIieVVVaLDZbHwHmmIQk3rD\r\n" +
+			"exgAAAAASUVORK5CYII=\r\n")
+	require.NoError(t, err)
+	assert.Equal(t, expectedAttachment, content.Attachments[0].Content)
+
+	// HCL Notes inlines attachments like this: without a filename.
+	// the attached image is from: https://openmoji.org/library/emoji-1F684
+	mailString = "Content-Type: multipart/related; boundary=\"=_related boundary=\"\r\n" +
+		"\r\n" +
+		"This text is for clients unable to decode multipart/related with multipart/alternative.\r\n" +
+		"\r\n" +
+		"--=_related boundary=\r\n" +
+		"Content-Type: multipart/alternative; boundary=\"=_alternative boundary=\"\r\n" +
+		"\r\n" +
+		"\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=\r\n" +
+		"Content-Type: text/plain\r\n" +
+		"\r\n" +
+		"This is the plaintext.\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=\r\n" +
+		"Content-Type: text/html\r\n" +
+		"\r\n" +
+		"<p>This is a mail with multipart/related. Here is an image sent without a filename.</p>\r\n" +
+		"<img src=cid:_1_2845>\r\n" +
+		"\r\n" +
+		"--=_alternative boundary=--\r\n" +
+		"\r\n" +
+		"--=_related boundary=\r\n" +
+		"Content-Transfer-Encoding: base64\r\n" +
+		"Content-Type: image/png\r\n" +
+		"Content-ID: <_1_2845>\r\n" +
+		"\r\n" +
+		"iVBORw0KGgoAAAANSUhEUgAAAEAAAAAiCAYAAADvVd+PAAAFLUlEQVRo3t2ZX0iTXxjHP3u35qvT\r\n" +
+		"6ZzhzKFuzPQq9WKQZS6FvLQf3Wh30ViBQXnViC5+LVKEiC6DjMQgCCy6NChoIKwghhcR1bJ5s5Ei\r\n" +
+		"LmtNs/05XYT7Vercaps/94Xn4uU95znvOc/3+XdehRBCsM1YXl7G6/Xi8Xh49uwZMzMzhEIhFhcX\r\n" +
+		"+fbtW87WbW1tRbVdmxZC8PTpU8bGxrh//z5fv37dcJxGo2HXrl1ZWVOhUPzybDAYUOSbAYlEgjt3\r\n" +
+		"7nD58mVmZ2cBkCSJ1tZWDhw4wP79+2lpaUGv16PX61Gr1Tm3RN7w/Plz0d7eLgABCKPRKJxOp3j/\r\n" +
+		"/r3YLuTlAD5+/ChOnDiR3HhdXZ24e/euiMfjYruRcxe4evUqV65c4fPnz6hUKrq7uzl06NA6v157\r\n" +
+		"19bWlrbueDzOq1evmJ6eJhQKZRww9+3blzsXWFpaEqdOnUpaPV2ZmJjYUveLFy+Ew+EQFRUVGev/\r\n" +
+		"WTQaTW4Y8OjRIxwOB4FAAEmS0Gq1lJWVpZwTjUaZm5vDZrPhdrs3HOP3+3E6nTx48IC1zy4uLqas\r\n" +
+		"rAy1Wr0uym8FnU6X3TT46dMnzp8/z82bNwHQarU0NTVRUlKScl44HMbn8wFQU1Oz7n0sFuP69etc\r\n" +
+		"unSJ5eVllEole/bswWAwbKk7FSRJyl4a/NnqSqWS+vp6jEZjSqskEglmZ2cJBoMIIbBYLExNTWEw\r\n" +
+		"GJJjvF4vDoeD6elpAKqrqzGbzVlJj5Ik/T0D/tTqS0tL+Hw+VlZWUKlUDAwMMDQ0RGlpKQArKyu4\r\n" +
+		"XC6uXbtGLBZDlmUaGxuprKzMajGmyrfVY7EYfr+fDx8+ANDS0sLo6ChWqzU5xu12c/r0aXw+HwqF\r\n" +
+		"gtraWkwmE0qlMutZSpVPq8/NzeH3+4lGo5SUlOByuRgcHESl+u8zLly4wMjICAClpaU0NTUlWZEL\r\n" +
+		"ZBwDfo/wDQ0NKa0ej8dZWFggEAgQiUQA6Onp4caNG5jN5l/GTk1N0dnZmTab8sqA+fl5jh07hsfj\r\n" +
+		"AUCWZXbv3g1AIBBYR/NoNEokEuHLly8kEgkATCYTQ0NDHD9+fFOGrKW2jfRmGxqNJr1CaHJyUuj1\r\n" +
+		"+j8qNiRJEp2dneL27dtidXU15TrhcFhYLJa/Km4ykeLi4tSF0O++Xl9fz5EjR9Dr9SlPtry8nKqq\r\n" +
+		"KsxmM1arFa1Wm7ZVQqEQDx8+5N27dznvTG022+YMmJycFEajUQBClmUxMjIiYrGYKDSwVQ3f3t4u\r\n" +
+		"3rx5k1LJy5cvhd1uF83NzaKoqChvFP5b6e3t/fUAMrX64uKiOHnypFAoFDtm0z9Ll14nVACRSIQz\r\n" +
+		"Z84wPj4OwMGDBxkbG6OxsXFT/7l37x6Dg4PMz89TJEn0VVXwT2U5dUVq1DlOXdmCsrwcVTQapaen\r\n" +
+		"B4/HgyzLDA8Pc+7cOSRJ2nTixYsXGR4eBsBaWsK/xmrqitTsSIyOjgpAmEwm8fbt27QCx969e3ck\r\n" +
+		"5TdyAfr6+gQgxsfH046ct27dEjqdbscfQG9vr1CtNRiZVMR2ux273U4hQOru7gbA5XLh9Xr5H/wn\r\n" +
+		"yS9WV1dFR0dHQfh0ptLR0fGjDgiHw8LpdIqGhoYdm9P/RCwWS3qXok+ePOHs2bO8fv06eZ3c39+X\r\n" +
+		"7AZ3MlK2wzMzMwwMDPD48WMAamtr6e/vo7m5uWBCwKYMWFhYoK2tjWAwiEaj4ejRXmw2W8oCqaAO\r\n" +
+		"wO1209XVhSzLHD5s+3F5UGAwGo2bt8OhUEjU1NQUdBDc8s9QMBhkYmIieVVVaLDZbHwHmmIQk3rD\r\n" +
+		"exgAAAAASUVORK5CYII=\r\n" +
+		"\r\n" +
+		"--=_related boundary=--\r\n" +
+		"\r\n"
+
+	env, err = enmime.ReadEnvelope(strings.NewReader(mailString))
+	require.NoError(t, err)
+	content = getContentFromMailReader(env)
+	assert.Equal(t, "This is the plaintext.", content.Content)
+	assert.Len(t, content.Attachments, 1)
+	assert.Equal(t, "_1_2845.png", content.Attachments[0].Name)
+	expectedAttachment, err = base64.StdEncoding.DecodeString(
+		"iVBORw0KGgoAAAANSUhEUgAAAEAAAAAiCAYAAADvVd+PAAAFLUlEQVRo3t2ZX0iTXxjHP3u35qvT\r\n" +
+			"6ZzhzKFuzPQq9WKQZS6FvLQf3Wh30ViBQXnViC5+LVKEiC6DjMQgCCy6NChoIKwghhcR1bJ5s5Ei\r\n" +
+			"LmtNs/05XYT7Vercaps/94Xn4uU95znvOc/3+XdehRBCsM1YXl7G6/Xi8Xh49uwZMzMzhEIhFhcX\r\n" +
+			"+fbtW87WbW1tRbVdmxZC8PTpU8bGxrh//z5fv37dcJxGo2HXrl1ZWVOhUPzybDAYUOSbAYlEgjt3\r\n" +
+			"7nD58mVmZ2cBkCSJ1tZWDhw4wP79+2lpaUGv16PX61Gr1Tm3RN7w/Plz0d7eLgABCKPRKJxOp3j/\r\n" +
+			"/r3YLuTlAD5+/ChOnDiR3HhdXZ24e/euiMfjYruRcxe4evUqV65c4fPnz6hUKrq7uzl06NA6v157\r\n" +
+			"19bWlrbueDzOq1evmJ6eJhQKZRww9+3blzsXWFpaEqdOnUpaPV2ZmJjYUveLFy+Ew+EQFRUVGev/\r\n" +
+			"WTQaTW4Y8OjRIxwOB4FAAEmS0Gq1lJWVpZwTjUaZm5vDZrPhdrs3HOP3+3E6nTx48IC1zy4uLqas\r\n" +
+			"rAy1Wr0uym8FnU6X3TT46dMnzp8/z82bNwHQarU0NTVRUlKScl44HMbn8wFQU1Oz7n0sFuP69etc\r\n" +
+			"unSJ5eVllEole/bswWAwbKk7FSRJyl4a/NnqSqWS+vp6jEZjSqskEglmZ2cJBoMIIbBYLExNTWEw\r\n" +
+			"GJJjvF4vDoeD6elpAKqrqzGbzVlJj5Ik/T0D/tTqS0tL+Hw+VlZWUKlUDAwMMDQ0RGlpKQArKyu4\r\n" +
+			"XC6uXbtGLBZDlmUaGxuprKzMajGmyrfVY7EYfr+fDx8+ANDS0sLo6ChWqzU5xu12c/r0aXw+HwqF\r\n" +
+			"gtraWkwmE0qlMutZSpVPq8/NzeH3+4lGo5SUlOByuRgcHESl+u8zLly4wMjICAClpaU0NTUlWZEL\r\n" +
+			"ZBwDfo/wDQ0NKa0ej8dZWFggEAgQiUQA6Onp4caNG5jN5l/GTk1N0dnZmTab8sqA+fl5jh07hsfj\r\n" +
+			"AUCWZXbv3g1AIBBYR/NoNEokEuHLly8kEgkATCYTQ0NDHD9+fFOGrKW2jfRmGxqNJr1CaHJyUuj1\r\n" +
+			"+j8qNiRJEp2dneL27dtidXU15TrhcFhYLJa/Km4ykeLi4tSF0O++Xl9fz5EjR9Dr9SlPtry8nKqq\r\n" +
+			"KsxmM1arFa1Wm7ZVQqEQDx8+5N27dznvTG022+YMmJycFEajUQBClmUxMjIiYrGYKDSwVQ3f3t4u\r\n" +
+			"3rx5k1LJy5cvhd1uF83NzaKoqChvFP5b6e3t/fUAMrX64uKiOHnypFAoFDtm0z9Ll14nVACRSIQz\r\n" +
+			"Z84wPj4OwMGDBxkbG6OxsXFT/7l37x6Dg4PMz89TJEn0VVXwT2U5dUVq1DlOXdmCsrwcVTQapaen\r\n" +
+			"B4/HgyzLDA8Pc+7cOSRJ2nTixYsXGR4eBsBaWsK/xmrqitTsSIyOjgpAmEwm8fbt27QCx969e3ck\r\n" +
+			"5TdyAfr6+gQgxsfH046ct27dEjqdbscfQG9vr1CtNRiZVMR2ux273U4hQOru7gbA5XLh9Xr5H/wn\r\n" +
+			"yS9WV1dFR0dHQfh0ptLR0fGjDgiHw8LpdIqGhoYdm9P/RCwWS3qXok+ePOHs2bO8fv06eZ3c39+X\r\n" +
+			"7AZ3MlK2wzMzMwwMDPD48WMAamtr6e/vo7m5uWBCwKYMWFhYoK2tjWAwiEaj4ejRXmw2W8oCqaAO\r\n" +
+			"wO1209XVhSzLHD5s+3F5UGAwGo2bt8OhUEjU1NQUdBDc8s9QMBhkYmIieVVVaLDZbHwHmmIQk3rD\r\n" +
+			"exgAAAAASUVORK5CYII=\r\n")
+	require.NoError(t, err)
+	assert.Equal(t, expectedAttachment, content.Attachments[0].Content)
 }