FEATURE (email): Add skipping TLS for email notifier

backend/internal/features/notifiers/models/email_notifier/model.go

@@ -23,13 +23,14 @@ const (
 )
 
 type EmailNotifier struct {
-	NotifierID   uuid.UUID `json:"notifierId"   gorm:"primaryKey;type:uuid;column:notifier_id"`
-	TargetEmail  string    `json:"targetEmail"  gorm:"not null;type:varchar(255);column:target_email"`
-	SMTPHost     string    `json:"smtpHost"     gorm:"not null;type:varchar(255);column:smtp_host"`
-	SMTPPort     int       `json:"smtpPort"     gorm:"not null;column:smtp_port"`
-	SMTPUser     string    `json:"smtpUser"     gorm:"type:varchar(255);column:smtp_user"`
-	SMTPPassword string    `json:"smtpPassword" gorm:"type:varchar(255);column:smtp_password"`
-	From         string    `json:"from"         gorm:"type:varchar(255);column:from_email"`
+	NotifierID           uuid.UUID `json:"notifierId"           gorm:"primaryKey;type:uuid;column:notifier_id"`
+	TargetEmail          string    `json:"targetEmail"          gorm:"not null;type:varchar(255);column:target_email"`
+	SMTPHost             string    `json:"smtpHost"             gorm:"not null;type:varchar(255);column:smtp_host"`
+	SMTPPort             int       `json:"smtpPort"             gorm:"not null;column:smtp_port"`
+	SMTPUser             string    `json:"smtpUser"             gorm:"type:varchar(255);column:smtp_user"`
+	SMTPPassword         string    `json:"smtpPassword"         gorm:"type:varchar(255);column:smtp_password"`
+	From                 string    `json:"from"                 gorm:"type:varchar(255);column:from_email"`
+	IsInsecureSkipVerify bool      `json:"isInsecureSkipVerify" gorm:"default:false;column:is_insecure_skip_verify"`
 }
 
 func (e *EmailNotifier) TableName() string {
@@ -99,6 +100,7 @@ func (e *EmailNotifier) Update(incoming *EmailNotifier) {
 	e.SMTPPort = incoming.SMTPPort
 	e.SMTPUser = incoming.SMTPUser
 	e.From = incoming.From
+	e.IsInsecureSkipVerify = incoming.IsInsecureSkipVerify
 
 	if incoming.SMTPPassword != "" {
 		e.SMTPPassword = incoming.SMTPPassword
@@ -198,7 +200,10 @@ func (e *EmailNotifier) sendStartTLS(
 
 func (e *EmailNotifier) createImplicitTLSClient() (*smtp.Client, func(), error) {
 	addr := net.JoinHostPort(e.SMTPHost, fmt.Sprintf("%d", e.SMTPPort))
-	tlsConfig := &tls.Config{ServerName: e.SMTPHost}
+	tlsConfig := &tls.Config{
+		ServerName:         e.SMTPHost,
+		InsecureSkipVerify: e.IsInsecureSkipVerify,
+	}
 	dialer := &net.Dialer{Timeout: DefaultTimeout}
 
 	conn, err := tls.DialWithDialer(dialer, "tcp", addr, tlsConfig)
@@ -237,7 +242,10 @@ func (e *EmailNotifier) createStartTLSClient() (*smtp.Client, func(), error) {
 	}
 
 	if ok, _ := client.Extension("STARTTLS"); ok {
-		if err := client.StartTLS(&tls.Config{ServerName: e.SMTPHost}); err != nil {
+		if err := client.StartTLS(&tls.Config{
+			ServerName:         e.SMTPHost,
+			InsecureSkipVerify: e.IsInsecureSkipVerify,
+		}); err != nil {
 			_ = client.Quit()
 			_ = conn.Close()
 			return nil, nil, fmt.Errorf("STARTTLS failed: %w", err)

backend/migrations/20260308120000_add_insecure_skip_verify_to_email_notifiers.sql

@@ -0,0 +1,11 @@
+-- +goose Up
+-- +goose StatementBegin
+ALTER TABLE email_notifiers
+    ADD COLUMN is_insecure_skip_verify BOOLEAN NOT NULL DEFAULT FALSE;
+-- +goose StatementEnd
+
+-- +goose Down
+-- +goose StatementBegin
+ALTER TABLE email_notifiers
+    DROP COLUMN is_insecure_skip_verify;
+-- +goose StatementEnd

frontend/src/entity/notifiers/models/email/EmailNotifier.ts

@@ -5,4 +5,5 @@ export interface EmailNotifier {
   smtpUser: string;
   smtpPassword: string;
   from: string;
+  isInsecureSkipVerify: boolean;
 }

frontend/src/features/notifiers/ui/edit/EditNotifierComponent.tsx

@@ -112,6 +112,7 @@ export function EditNotifierComponent({
         smtpUser: '',
         smtpPassword: '',
         from: '',
+        isInsecureSkipVerify: false,
       };
     }
 

frontend/src/features/notifiers/ui/edit/notifiers/EditEmailNotifierComponent.tsx

@@ -1,5 +1,6 @@
-import { InfoCircleOutlined } from '@ant-design/icons';
-import { Input, Tooltip } from 'antd';
+import { DownOutlined, InfoCircleOutlined, UpOutlined } from '@ant-design/icons';
+import { Checkbox, Input, Tooltip } from 'antd';
+import { useState } from 'react';
 
 import type { Notifier } from '../../../../../entity/notifiers';
 
@@ -10,6 +11,9 @@ interface Props {
 }
 
 export function EditEmailNotifierComponent({ notifier, setNotifier, setUnsaved }: Props) {
+  const hasAdvancedValues = !!notifier?.emailNotifier?.isInsecureSkipVerify;
+  const [showAdvanced, setShowAdvanced] = useState(hasAdvancedValues);
+
   return (
     <>
       <div className="mb-1 flex w-full flex-col items-start sm:flex-row sm:items-center">
@@ -163,6 +167,53 @@ export function EditEmailNotifierComponent({ notifier, setNotifier, setUnsaved }
           </Tooltip>
         </div>
       </div>
+
+      <div className="mt-4 mb-3 flex items-center">
+        <div
+          className="flex cursor-pointer items-center text-sm text-blue-600 hover:text-blue-800"
+          onClick={() => setShowAdvanced(!showAdvanced)}
+        >
+          <span className="mr-2">Advanced settings</span>
+
+          {showAdvanced ? (
+            <UpOutlined style={{ fontSize: '12px' }} />
+          ) : (
+            <DownOutlined style={{ fontSize: '12px' }} />
+          )}
+        </div>
+      </div>
+
+      {showAdvanced && (
+        <div className="mb-1 flex w-full flex-col items-start sm:flex-row sm:items-center">
+          <div className="mb-1 min-w-[150px] sm:mb-0">Skip TLS verify</div>
+          <div className="flex items-center">
+            <Checkbox
+              checked={notifier?.emailNotifier?.isInsecureSkipVerify || false}
+              onChange={(e) => {
+                if (!notifier?.emailNotifier) return;
+
+                setNotifier({
+                  ...notifier,
+                  emailNotifier: {
+                    ...notifier.emailNotifier,
+                    isInsecureSkipVerify: e.target.checked,
+                  },
+                });
+                setUnsaved();
+              }}
+            >
+              Skip TLS
+            </Checkbox>
+
+            <Tooltip
+              className="cursor-pointer"
+              title="Skip TLS certificate verification. Enable this if your SMTP server uses a self-signed certificate. Warning: this reduces security."
+            >
+              <InfoCircleOutlined className="ml-2" style={{ color: 'gray' }} />
+            </Tooltip>
+          </div>
+        </div>
+      )}
     </>
   );
 }

frontend/src/features/notifiers/ui/show/notifier/ShowEmailNotifierComponent.tsx

@@ -36,6 +36,13 @@ export function ShowEmailNotifierComponent({ notifier }: Props) {
         <div className="min-w-[110px]">From</div>
         {notifier?.emailNotifier?.from || '(auto)'}
       </div>
+
+      {notifier?.emailNotifier?.isInsecureSkipVerify && (
+        <div className="mb-1 flex items-center">
+          <div className="min-w-[110px]">Skip TLS</div>
+          Enabled
+        </div>
+      )}
     </>
   );
 }