do not convert plaintext as html

bot/bot.go

@@ -90,7 +90,7 @@ func (b *Bot) Start() error {
 }
 
 // Send email to matrix room
-func (b *Bot) Send(ctx context.Context, from, to, subject, body string, files []*utils.File) error {
+func (b *Bot) Send(ctx context.Context, from, to, subject, plaintext, html string, files []*utils.File) error {
 	roomID, ok := b.GetMapping(ctx, utils.Mailbox(to))
 	if !ok {
 		return errors.New("room not found")
@@ -103,7 +103,11 @@ func (b *Bot) Send(ctx context.Context, from, to, subject, body string, files []
 	text.WriteString("# ")
 	text.WriteString(subject)
 	text.WriteString("\n\n")
-	text.WriteString(format.HTMLToMarkdown(body))
+	if html != "" {
+		text.WriteString(format.HTMLToMarkdown(html))
+	} else {
+		text.WriteString(plaintext)
+	}
 
 	content := format.RenderMarkdown(text.String(), true, true)
 	_, err := b.lp.Send(roomID, content)

smtp/session.go

@@ -66,17 +66,13 @@ func (s *session) Data(r io.Reader) error {
 	if err != nil {
 		return err
 	}
-	text := eml.Text
-	if eml.HTML != "" {
-		text = eml.HTML
-	}
 
 	attachments := s.parseAttachments(eml.Attachments)
 	inlines := s.parseAttachments(eml.Inlines)
 	files := make([]*utils.File, 0, len(attachments)+len(inlines))
 	files = append(files, attachments...)
 	files = append(files, inlines...)
-	return s.client.Send(s.ctx, s.from, s.to, eml.GetHeader("Subject"), text, files)
+	return s.client.Send(s.ctx, s.from, s.to, eml.GetHeader("Subject"), eml.Text, eml.HTML, files)
 }
 
 func (s *session) Reset() {}

smtp/smtp.go

@@ -10,5 +10,5 @@ import (
 // Client interface to send emails
 type Client interface {
 	GetMapping(context.Context, string) (id.RoomID, bool)
-	Send(ctx context.Context, from, mailbox, subject, body string, files []*utils.File) error
+	Send(ctx context.Context, from, mailbox, subject, text, html string, files []*utils.File) error
 }