diff --git a/main.go b/main.go
index 5e540ec..b35ef95 100644
--- a/main.go
+++ b/main.go
@@ -20,6 +20,7 @@ package main
 
 import (
 	"log"
+	"runtime"
 
 	smtp "github.com/emersion/go-smtp"
 )
@@ -55,6 +56,8 @@ func setupServer() *smtp.Server {
 func main() {
 	s := setupServer()
 
+	runtime.GC()
+
 	if err := runServer(s); err != nil {
 		log.Fatal(err)
 	}