Few changes

src/components/ha-newsletter.ts

@@ -0,0 +1,145 @@
+import "./ha-icon-button";
+import "./ha-circular-progress";
+import "@material/mwc-button/mwc-button";
+import "./ha-card";
+import "./ha-textfield";
+import { LitElement, TemplateResult, html, CSSResultGroup, css } from "lit";
+import { customElement, property, query } from "lit/decorators";
+import { mdiClose } from "@mdi/js";
+import type { HaTextField } from "./ha-textfield";
+import type { HomeAssistant } from "../types";
+import { LocalStorage } from "../common/decorators/local-storage";
+
+@customElement("ha-newsletter")
+class HaNewsletter extends LitElement {
+  @property({ attribute: false }) hass!: HomeAssistant;
+
+  @query("ha-textfield")
+  private _emailField?: HaTextField;
+
+  @LocalStorage("dismissNewsletter", true)
+  private _dismissNewsletter = false;
+
+  private _requestStatus?: "inprogress" | "complete";
+
+  protected render(): TemplateResult {
+    if (this._dismissNewsletter) {
+      return html``;
+    }
+
+    return html`
+      <ha-card>
+        <div class="header">
+          ${this.hass.localize("ui.newsletter.newsletter")}
+          <ha-icon-button
+            label="Dismiss"
+            .path=${mdiClose}
+            @click=${this._dismiss}
+          ></ha-icon-button>
+        </div>
+        <div class="newsletter">
+          ${this._requestStatus === "complete"
+            ? html`<span>${this.hass.localize("ui.newsletter.thanks")}</span>`
+            : html`
+                <ha-textfield
+                  required
+                  type="email"
+                  .label=${this.hass.localize("ui.newsletter.email")}
+                  .validationMessage=${this.hass.localize(
+                    "ui.newsletter.validation"
+                  )}
+                ></ha-textfield>
+                ${this._requestStatus === "inprogress"
+                  ? html`
+                      <ha-circular-progress
+                        active
+                        alt="Loading"
+                      ></ha-circular-progress>
+                    `
+                  : html`
+                      <mwc-button
+                        raised
+                        .label=${this.hass.localize("ui.newsletter.subscribe")}
+                        @click=${this._subscribe}
+                      ></mwc-button>
+                    `}
+              `}
+        </div>
+      </ha-card>
+    `;
+  }
+
+  private _subscribe(): void {
+    if (!this._emailField?.reportValidity()) {
+      this._emailField!.focus();
+      return;
+    }
+
+    this._requestStatus = "inprogress";
+
+    fetch(
+      `https://newsletter.home-assistant.io/subscribe?email=${
+        this._emailField!.value
+      }`
+    )
+      .then(() => {
+        this._requestStatus = "complete";
+        setTimeout(this._dismiss, 2000);
+      })
+      .catch((err) => {
+        // Reset request so user can re-enter email
+        this._requestStatus = undefined;
+        // eslint-disable-next-line no-console
+        console.error(err);
+      });
+  }
+
+  private _dismiss(): void {
+    this._dismissNewsletter = true;
+  }
+
+  static get styles(): CSSResultGroup {
+    return css`
+      .newsletter {
+        display: flex;
+        flex-direction: row;
+        padding: 0 16px 16px;
+      }
+
+      .header {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        color: var(--ha-card-header-color, --primary-text-color);
+        font-family: var(--ha-card-header-font-family, inherit);
+        font-size: var(--ha-card-header-font-size, 24px);
+        letter-spacing: -0.012em;
+        line-height: 48px;
+        padding: 12px 16px 16px;
+        margin-block-start: 0px;
+        margin-block-end: 0px;
+        font-weight: normal;
+      }
+
+      ha-textfield {
+        flex: 1;
+        display: block;
+        padding-right: 8px;
+      }
+
+      mwc-button {
+        padding-top: 12px;
+      }
+
+      ha-icon-button {
+        cursor: pointer;
+      }
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    "ha-newsletter": HaNewsletter;
+  }
+}

src/panels/config/dashboard/ha-config-dashboard.ts

@@ -1,3 +1,4 @@
+import "../../../components/ha-newsletter";
 import { mdiCloudLock, mdiDotsVertical, mdiMagnify } from "@mdi/js";
 import "@material/mwc-list/mwc-list-item";
 import type { ActionDetail } from "@material/mwc-list";
@@ -134,6 +135,7 @@ class HaConfigDashboard extends LitElement {
                     .pages=${configSections.dashboard}
                   ></ha-config-navigation>
                 </ha-card>`}
+          <ha-newsletter .hass=${this.hass}></ha-newsletter>
         </ha-config-section>
       </ha-app-layout>
     `;

src/translations/en.json

@@ -972,6 +972,13 @@
       "triggered": "Triggered {name}",
       "dismiss": "Dismiss"
     },
+    "newsletter": {
+      "newsletter": "Newsletter",
+      "email": "Email",
+      "validation": "A valid email address is required",
+      "subscribe": "Subscribe",
+      "thanks": "Thanks for subscribing!"
+    },
     "sidebar": {
       "external_app_configuration": "App Configuration",
       "sidebar_toggle": "Sidebar Toggle",