diff --git a/main.js b/main.js
index feadfce5..d36b8077 100644
--- a/main.js
+++ b/main.js
@@ -44,6 +44,7 @@ async function main() {
         const contentType = core.getInput("content_type", { required: true })
         const attachments = core.getInput("attachments", { required: false })
         const convertMarkdown = core.getInput("convert_markdown", { required: false })
+        const ignoreCert = core.getInput("ignore_cert", { required: false })
 
         const transport = nodemailer.createTransport({
             host: serverAddress,
@@ -53,6 +54,9 @@ async function main() {
                 user: username,
                 pass: password,
             }
+            tls: ignoreCert ? {
+                rejectUnauthorized: false
+            } : undefined
         })
 
         const info = await transport.sendMail({