added godown html2markdown

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/Flaque/filet v0.0.0-20190209224823-fc4d33cfcf93
 	github.com/PuerkitoBio/goquery v1.5.0
 	github.com/Skarlso/html-to-markdown v0.0.0-20191210071215-2cf06e949e49
+	github.com/cseeger-epages/godown v0.0.0-20180312012330-2e9e17e0ea51
 	github.com/dsnet/compress v0.0.1 // indirect
 	github.com/emersion/go-imap v1.0.0-rc.2
 	github.com/emersion/go-message v0.11.0

go.sum

@@ -45,6 +45,8 @@ github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8Nz
 github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
 github.com/coreos/go-systemd v0.0.0-20181012123002-c6f51f82210d/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
 github.com/corpix/uarand v0.0.0/go.mod h1:JSm890tOkDN+M1jqN8pUGDKnzJrsVbJwSMHBY4zwz7M=
+github.com/cseeger-epages/godown v0.0.0-20180312012330-2e9e17e0ea51 h1:wRkDqYlQratKLUdtdpAeyeRolvJ5y/L/7zeQ3Be8vOw=
+github.com/cseeger-epages/godown v0.0.0-20180312012330-2e9e17e0ea51/go.mod h1:YH5dvqBkWk+/05C+IsYsAIsQVkiSRqzgaYp2aogXjIc=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=

lib/mattermost.go

@@ -1,10 +1,12 @@
 package mail2most
 
 import (
+	"bytes"
 	"encoding/base64"
 	"fmt"
 	"strings"
 
+	"github.com/cseeger-epages/godown"
 	"github.com/k3a/html2text"
 	"github.com/mattermost/mattermost-server/model"
 )
@@ -51,7 +53,12 @@ func (m Mail2Most) PostMattermost(profile int, mail Mail) error {
 	}
 
 	if m.Config.Profiles[profile].Mattermost.ConvertToMarkdown {
-		// tbd convert body to markdown
+		var b bytes.Buffer
+		err := godown.Convert(&b, strings.NewReader(body), nil)
+		if err != nil {
+			return err
+		}
+		body = b.String()
 	} else if m.Config.Profiles[profile].Mattermost.StripHTML {
 		body = html2text.HTML2Text(body)
 		mail.Subject = html2text.HTML2Text(mail.Subject)