diff --git a/go.mod b/go.mod
index 57155a1..90cd999 100644
--- a/go.mod
+++ b/go.mod
@@ -11,7 +11,7 @@ require (
 	github.com/muesli/roff v0.1.0
 	github.com/resendlabs/resend-go v1.7.0
 	github.com/spf13/cobra v1.7.0
-	github.com/xhit/go-simple-mail/v2 v2.15.0
+	github.com/xhit/go-simple-mail/v2 v2.16.0
 	github.com/yuin/goldmark v1.5.6
 )
 
diff --git a/go.sum b/go.sum
index 7ddfce6..4711b21 100644
--- a/go.sum
+++ b/go.sum
@@ -63,8 +63,8 @@ github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An
 github.com/stretchr/testify v1.8.2 h1:+h33VjcLVPDHtOdpUCuF+7gSuG3yGIftsP1YvFihtJ8=
 github.com/toorop/go-dkim v0.0.0-20201103131630-e1cd1a0a5208 h1:PM5hJF7HVfNWmCjMdEfbuOBNXSVF2cMFGgQTPdKCbwM=
 github.com/toorop/go-dkim v0.0.0-20201103131630-e1cd1a0a5208/go.mod h1:BzWtXXrXzZUvMacR0oF/fbDDgUPO8L36tDMmRAf14ns=
-github.com/xhit/go-simple-mail/v2 v2.15.0 h1:qMXeqcZErUW/Dw6EXxmPuxHzVI8MdxWnEnu2xcisohU=
-github.com/xhit/go-simple-mail/v2 v2.15.0/go.mod h1:b7P5ygho6SYE+VIqpxA6QkYfv4teeyG4MKqB3utRu98=
+github.com/xhit/go-simple-mail/v2 v2.16.0 h1:ouGy/Ww4kuaqu2E2UrDw7SvLaziWTB60ICLkIkNVccA=
+github.com/xhit/go-simple-mail/v2 v2.16.0/go.mod h1:b7P5ygho6SYE+VIqpxA6QkYfv4teeyG4MKqB3utRu98=
 github.com/yuin/goldmark v1.5.6 h1:COmQAWTCcGetChm3Ig7G/t8AFAN00t+o8Mt4cf7JpwA=
 github.com/yuin/goldmark v1.5.6/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/exp v0.0.0-20230510235704-dd950f8aeaea h1:vLCWI/yYrdEHyN2JzIzPO3aaQJHQdp89IZBA/+azVC4=