diff --git a/cmd/trello2mail/email.go b/cmd/trello2mail/email.go
deleted file mode 100644
index 65f9263..0000000
--- a/cmd/trello2mail/email.go
+++ /dev/null
@@ -1,121 +0,0 @@
-package main
-
-// TODO: use https://github.com/domodwyer/mailyak as a base lib
-
-import (
-	"bytes"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"log"
-	"math/rand"
-	"net/mail"
-	"strings"
-)
-
-type EmailHeaders map[string]string
-
-type EmailConfig struct {
-	From    string
-	To      []string
-	Subject string
-}
-
-type EmailCtx struct {
-	Headers   EmailHeaders
-	BodyPlain string
-	BodyHtml  string
-}
-
-const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
-
-func RandStringBytes(n int) string {
-	b := make([]byte, n)
-	for i := range b {
-		b[i] = letterBytes[rand.Intn(len(letterBytes))]
-	}
-	return string(b)
-}
-
-func (headers EmailHeaders) String() string {
-	var buffer bytes.Buffer
-	for k, v := range headers {
-		buffer.WriteString(fmt.Sprintf("%s: %s\r\n", k, v))
-	}
-	return buffer.String()
-}
-
-func NewEmail() *EmailCtx {
-	email := EmailCtx{}
-	email.Headers = make(EmailHeaders)
-	return &email
-}
-
-func encodeRFC2047(text string) string {
-	// use mail's rfc2047 to encode any string
-	addr := mail.Address{Name: text, Address: ""}
-	return strings.Trim(addr.String(), " \"<@>")
-}
-
-func (email *EmailCtx) SetHeaders(config EmailConfig) {
-	email.Headers["Return-Path"] = config.From
-	email.Headers["From"] = config.From
-	if len(config.To) < 1 {
-		errmsg := "EMAIL_TO must contain at least one value"
-		log.Panic(errors.New(errmsg))
-	}
-	email.Headers["To"] = config.To[0]
-
-	if len(config.To) > 1 {
-		email.Headers["Cc"] = strings.Join(config.To[1:], ",")
-	}
-	email.Headers["Subject"] = encodeRFC2047(config.Subject)
-	email.Headers["Content-Transfer-Encoding"] = "quoted-printable"
-	email.Headers["MIME-Version"] = "1.0"
-
-	return
-}
-
-func (email *EmailCtx) SetBody(html string, plain string) {
-	email.BodyPlain = plain
-	email.BodyHtml = html
-	return
-}
-
-func (email *EmailCtx) String() string {
-	var buffer bytes.Buffer
-	mixBoundary := RandStringBytes(16)
-	altBoundary := RandStringBytes(16)
-
-	buffer.WriteString(email.Headers.String())
-	buffer.WriteString(fmt.Sprintf("Content-Type: multipart/mixed;\r\n    boundary=\"%s\"\r\n", mixBoundary))
-	buffer.WriteString("\r\n")
-
-	buffer.WriteString(fmt.Sprintf("--%s\r\n", mixBoundary))
-	buffer.WriteString(fmt.Sprintf("Content-Type: multipart/alternative;\r\n    boundary=\"%s\"\r\n", altBoundary))
-	buffer.WriteString("\r\n")
-
-	buffer.WriteString(fmt.Sprintf("--%s\r\n", altBoundary))
-	buffer.WriteString(fmt.Sprintf("Content-Type: text/plain; charset=\"utf-8\"\r\n"))
-	buffer.WriteString(fmt.Sprintf("Content-Transfer-Encoding: base64\r\n"))
-	buffer.WriteString("\r\n")
-	buffer.WriteString(base64.StdEncoding.EncodeToString([]byte(email.BodyPlain)))
-	buffer.WriteString("\r\n")
-	buffer.WriteString("\r\n")
-
-	buffer.WriteString(fmt.Sprintf("--%s\r\n", altBoundary))
-	buffer.WriteString(fmt.Sprintf("Content-Type: text/html; charset=\"utf-8\"\r\n"))
-	buffer.WriteString(fmt.Sprintf("Content-Transfer-Encoding: base64\r\n"))
-	buffer.WriteString("\r\n")
-	buffer.WriteString(base64.StdEncoding.EncodeToString([]byte(email.BodyHtml)))
-	buffer.WriteString("\r\n")
-	buffer.WriteString("\r\n")
-
-	buffer.WriteString(fmt.Sprintf("--%s--\r\n", altBoundary))
-	buffer.WriteString("\r\n")
-
-	buffer.WriteString(fmt.Sprintf("--%s--\r\n", mixBoundary))
-	buffer.WriteString("\r\n")
-
-	return buffer.String()
-}