diff --git a/.gitignore b/.gitignore
index b609275..9b5a884 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 mailrelay
 test
-vendor
\ No newline at end of file
+vendor
+build
diff --git a/README.md b/README.md
index 272d5ef..c941e36 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@
 
 `mailrelay` is a simple mail relay that can take unauthenticated SMTP emails (e.g. over port 25) and relay them to authenticated, TLS-enabled SMTP servers. Plus it's easy to configure.
 
+Prebuilt binaries are available [here](https://github.com/wiggin77/mailrelay/releases/latest) for Linux, MacOS, Windows, OpenBSD.
+
 ## Use case
 
 Some older appliances such as scanners, multi-function printers, RAID cards or NAS boxes with monitoring, can only send email without any authentication or encryption over port 25. `mailrelay` can send those emails to your Gmail, Fastmail or other provider.
diff --git a/build.sh b/build.sh
new file mode 100755
index 0000000..17d514c
--- /dev/null
+++ b/build.sh
@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# build Linux
+echo building Linux...
+env GOOS=linux GOARCH=amd64 go build -o ./build/linux_amd64/mailrelay-linux-amd64
+
+# build Windows
+echo building Windows...
+env GOOS=windows GOARCH=amd64 go build -o ./build/windows_amd64/mailrelay-windows-amd64.exe
+
+# build OSX
+echo building OSX...
+env GOOS=darwin GOARCH=amd64 go build -o ./build/osx_amd64/mailrelay-osx-amd64
+
+# build OpenBSD
+echo building OpenBSD...
+env GOOS=openbsd GOARCH=amd64 go build -o ./build/openbsd_amd64/mailrelay-openbsd-amd64
\ No newline at end of file