Add Activepieces integration for workflow automation

- Add Activepieces fork with SmoothSchedule custom piece
- Create integrations app with Activepieces service layer
- Add embed token endpoint for iframe integration
- Create Automations page with embedded workflow builder
- Add sidebar visibility fix for embed mode
- Add list inactive customers endpoint to Public API
- Include SmoothSchedule triggers: event created/updated/cancelled
- Include SmoothSchedule actions: create/update/cancel events, list resources/services/customers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

activepieces-fork/packages/pieces/community/smtp/src/index.ts

@@ -0,0 +1,101 @@
+import {
+  PieceAuth,
+  Property,
+  createPiece,
+} from '@activepieces/pieces-framework';
+import { PieceCategory } from '@activepieces/shared';
+import { sendEmail } from './lib/actions/send-email';
+import { smtpCommon } from './lib/common';
+
+const SMTPPorts = [25, 465, 587, 2525];
+
+export const smtpAuth = PieceAuth.CustomAuth({
+  required: true,
+  props: {
+    host: Property.ShortText({
+      displayName: 'Host',
+      required: true,
+    }),
+    email: Property.ShortText({
+      displayName: 'Email',
+      required: true,
+    }),
+    password: PieceAuth.SecretText({
+      displayName: 'Password',
+      required: true,
+    }),
+    port: Property.StaticDropdown({
+      displayName: 'Port',
+      required: true,
+      options: {
+        disabled: false,
+        options: SMTPPorts.map((port) => {
+          return {
+            label: port.toString(),
+            value: port,
+          };
+        }),
+      },
+    }),
+    TLS: Property.Checkbox({
+      displayName: 'Require TLS?',
+      defaultValue: false,
+      required: true,
+    }),
+  },
+  validate: async ({ auth }) => {
+        try {
+      const transporter = smtpCommon.createSMTPTransport(auth);
+      return new Promise((resolve, reject) => {
+        transporter.verify(function (error, success) {
+          if (error) {
+            resolve({ valid: false, error: JSON.stringify(error) });
+          } else {
+            resolve({ valid: true });
+          }
+        });
+      });
+    } catch (e) {
+      const castedError = (e as Record<string, unknown>)
+      const code = castedError?.['code'];
+      switch (code) {
+        case 'EDNS':
+          return {
+            valid: false,
+            error: 'SMTP server not found or unreachable with error code: EDNS',
+          };
+        case 'CONN':
+          return {
+            valid: false,
+            error: 'SMTP server connection failed with error code: CONN',
+          };
+        default:
+          break;
+      }
+      return {
+        valid: false,
+        error: JSON.stringify(e),
+      };
+    }
+  },
+});
+
+export const smtp = createPiece({
+  displayName: 'SMTP',
+  description: 'Send emails using Simple Mail Transfer Protocol',
+  minimumSupportedRelease: '0.30.0',
+  logoUrl: 'https://cdn.activepieces.com/pieces/smtp.png',
+  categories: [PieceCategory.CORE],
+  authors: [
+    'tahboubali',
+    'abaza738',
+    'kishanprmr',
+    'MoShizzle',
+    'khaledmashaly',
+    'abuaboud',
+    'pfernandez98'
+  ],
+  auth: smtpAuth,
+  actions: [sendEmail],
+  triggers: [],
+});