diff --git a/packages/backend/src/apps/smtp/assets/favicon.svg b/packages/backend/src/apps/smtp/assets/favicon.svg
new file mode 100644
index 00000000..57f0fa58
--- /dev/null
+++ b/packages/backend/src/apps/smtp/assets/favicon.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" aria-label="Mail" role="img" viewBox="0 0 512 512">
+  <rect width="512" height="512" rx="15%" fill="#328cff"/>
+  <path d="m250 186c-46 0-69 35-69 74 0 44 29 72 68 72 43 0 73-32 73-75 0-44-34-71-72-71zm-1-37c30 0 57 13 77 33 0-22 35-22 35 1v150c-1 10 10 16 16 9 25-25 54-128-14-187-64-56-149-47-195-15-48 33-79 107-49 175 33 76 126 99 182 76 28-12 41 26 12 39-45 19-168 17-225-82-38-68-36-185 67-248 78-46 182-33 244 32 66 69 62 197-2 246-28 23-71 1-71-32v-11c-20 20-47 32-77 32-57 0-108-51-108-108 0-58 51-110 108-110" fill="#fff"/>
+</svg>
diff --git a/packages/backend/src/apps/smtp/auth/index.ts b/packages/backend/src/apps/smtp/auth/index.ts
new file mode 100644
index 00000000..900c9278
--- /dev/null
+++ b/packages/backend/src/apps/smtp/auth/index.ts
@@ -0,0 +1,210 @@
+import verifyCredentials from './verify-credentials';
+import isStillVerified from './is-still-verified';
+
+export default {
+  fields: [
+    {
+      key: 'host',
+      label: 'Host',
+      type: 'string',
+      required: true,
+      readOnly: false,
+      value: null,
+      placeholder: null,
+      description: 'The host information Automatisch will connect to.',
+      docUrl: 'https://automatisch.io/docs/smtp#host',
+      clickToCopy: false,
+    },
+    {
+      key: 'username',
+      label: 'Email/Username',
+      type: 'string',
+      required: true,
+      readOnly: false,
+      value: null,
+      placeholder: null,
+      description: 'Your SMTP login credentials.',
+      docUrl: 'https://automatisch.io/docs/smtp#username',
+      clickToCopy: false,
+    },
+    {
+      key: 'password',
+      label: 'Password',
+      type: 'string',
+      required: true,
+      readOnly: false,
+      value: null,
+      placeholder: null,
+      description: null,
+      docUrl: 'https://automatisch.io/docs/smtp#password',
+      clickToCopy: false,
+    },
+    {
+      key: 'useTls',
+      label: 'Use TLS?',
+      type: 'dropdown',
+      required: false,
+      readOnly: false,
+      value: false,
+      placeholder: null,
+      description: null,
+      docUrl: 'https://automatisch.io/docs/smtp#use-tls',
+      clickToCopy: false,
+      options: [
+        {
+          label: 'Yes',
+          value: true,
+        },
+        {
+          label: 'No',
+          value: false,
+        },
+      ],
+    },
+    {
+      key: 'port',
+      label: 'Port',
+      type: 'integer',
+      required: false,
+      readOnly: false,
+      value: 25,
+      placeholder: null,
+      description: null,
+      docUrl: 'https://automatisch.io/docs/smtp#port',
+      clickToCopy: false,
+    },
+    {
+      key: 'fromEmail',
+      label: 'From Email',
+      type: 'string',
+      required: false,
+      readOnly: false,
+      value: null,
+      placeholder: null,
+      description: null,
+      docUrl: 'https://automatisch.io/docs/smtp#from-email',
+      clickToCopy: false,
+    },
+  ],
+  authenticationSteps: [
+    {
+      step: 1,
+      type: 'mutation',
+      name: 'createConnection',
+      fields: [
+        {
+          name: 'key',
+          value: '{key}',
+        },
+        {
+          name: 'data',
+          value: null,
+          fields: [
+            {
+              name: 'host',
+              value: '{fields.host}',
+            },
+            {
+              name: 'username',
+              value: '{fields.username}',
+            },
+            {
+              name: 'password',
+              value: '{fields.password}',
+            },
+            {
+              name: 'useTLS',
+              value: '{fields.useTls}',
+            },
+            {
+              name: 'port',
+              value: '{fields.port}',
+            },
+            {
+              name: 'fromEmail',
+              value: '{fields.fromEmail}',
+            },
+          ],
+        },
+      ],
+    },
+    {
+      step: 2,
+      type: 'mutation',
+      name: 'verifyConnection',
+      fields: [
+        {
+          name: 'id',
+          value: '{createConnection.id}',
+        },
+      ],
+    },
+  ],
+  reconnectionSteps: [
+    {
+      step: 1,
+      type: 'mutation',
+      name: 'resetConnection',
+      fields: [
+        {
+          name: 'id',
+          value: '{connection.id}',
+        },
+      ],
+    },
+    {
+      step: 2,
+      type: 'mutation',
+      name: 'updateConnection',
+      fields: [
+        {
+          name: 'id',
+          value: '{connection.id}',
+        },
+        {
+          name: 'data',
+          value: null,
+          fields: [
+            {
+              name: 'host',
+              value: '{fields.host}',
+            },
+            {
+              name: 'username',
+              value: '{fields.username}',
+            },
+            {
+              name: 'password',
+              value: '{fields.password}',
+            },
+            {
+              name: 'useTLS',
+              value: '{fields.useTls}',
+            },
+            {
+              name: 'port',
+              value: '{fields.port}',
+            },
+            {
+              name: 'fromEmail',
+              value: '{fields.fromEmail}',
+            },
+          ],
+        },
+      ],
+    },
+    {
+      step: 3,
+      type: 'mutation',
+      name: 'verifyConnection',
+      fields: [
+        {
+          name: 'id',
+          value: '{connection.id}',
+        },
+      ],
+    },
+  ],
+  verifyCredentials,
+  isStillVerified,
+};
diff --git a/packages/backend/src/apps/smtp/auth/is-still-verified.ts b/packages/backend/src/apps/smtp/auth/is-still-verified.ts
new file mode 100644
index 00000000..95a1ef29
--- /dev/null
+++ b/packages/backend/src/apps/smtp/auth/is-still-verified.ts
@@ -0,0 +1,13 @@
+import { IGlobalVariable } from '@automatisch/types';
+import verifyCredentials from './verify-credentials';
+
+const isStillVerified = async ($: IGlobalVariable) => {
+  try {
+    await verifyCredentials($);
+    return true;
+  } catch (error) {
+    return false;
+  }
+};
+
+export default isStillVerified;
diff --git a/packages/backend/src/apps/smtp/auth/verify-credentials.ts b/packages/backend/src/apps/smtp/auth/verify-credentials.ts
new file mode 100644
index 00000000..22189967
--- /dev/null
+++ b/packages/backend/src/apps/smtp/auth/verify-credentials.ts
@@ -0,0 +1,22 @@
+import { IGlobalVariable } from '@automatisch/types';
+import nodemailer, { TransportOptions } from 'nodemailer';
+
+const verifyCredentials = async ($: IGlobalVariable) => {
+  const client = nodemailer.createTransport({
+    host: $.auth.data.host,
+    port: $.auth.data.port,
+    secure: $.auth.data.useTls,
+    auth: {
+      user: $.auth.data.username,
+      pass: $.auth.data.password,
+    },
+  } as TransportOptions);
+
+  await client.verify();
+
+  await $.auth.set({
+    screenName: $.auth.data.username,
+  });
+};
+
+export default verifyCredentials;
diff --git a/packages/backend/src/apps/smtp/index.ts b/packages/backend/src/apps/smtp/index.ts
new file mode 100644
index 00000000..9a0a7f94
--- /dev/null
+++ b/packages/backend/src/apps/smtp/index.ts
@@ -0,0 +1,13 @@
+import defineApp from '../../helpers/define-app';
+
+export default defineApp({
+  name: 'SMTP',
+  key: 'smtp',
+  iconUrl: '{BASE_URL}/apps/smtp/assets/favicon.svg',
+  authDocUrl: 'https://automatisch.io/docs/connections/smtp',
+  supportsConnections: true,
+  baseUrl: '',
+  apiBaseUrl: '',
+  primaryColor: '2DAAE1',
+  beforeRequest: [],
+});
diff --git a/packages/backend/src/models/app.ts b/packages/backend/src/models/app.ts
index 958eee1c..87ec8158 100644
--- a/packages/backend/src/models/app.ts
+++ b/packages/backend/src/models/app.ts
@@ -16,6 +16,7 @@ class App {
     'scheduler',
     'slack',
     'twitter',
+    'smtp',
   ];
 
   static async findAll(name?: string, stripFuncs = true): Promise<IApp[]> {