feat: add email service

Author: apsinghdev

apps/api/package.json

@@ -35,6 +35,7 @@
     "helmet": "^7.2.0",
     "jsonwebtoken": "^9.0.2",
     "razorpay": "^2.9.6",
+    "zeptomail": "^6.2.1",
     "zod": "^4.1.9"
   }
 }

apps/api/src/services/email.service.ts

@@ -0,0 +1,162 @@
+import { SendMailClient } from "zeptomail";
+
+interface EmailRecipient {
+  address: string;
+  name: string;
+}
+
+interface SendEmailInput {
+  to: EmailRecipient[];
+  subject: string;
+  htmlBody: string;
+  textBody?: string;
+}
+
+// Initialize ZeptoMail client
+const initializeEmailClient = () => {
+  const url =
+    process.env.ZEPTOMAIL_URL || "https://api.zeptomail.in/v1.1/email";
+  const tokenFromEnv = process.env.ZEPTOMAIL_TOKEN;
+
+  if (!tokenFromEnv) {
+    throw new Error(
+      "ZEPTOMAIL_TOKEN is not configured in environment variables"
+    );
+  }
+
+  // If token doesn't start with "Zoho-enczapikey", add it
+  // This allows storing the token without the prefix to avoid space issues in Docker
+  const token = tokenFromEnv.startsWith("Zoho-enczapikey")
+    ? tokenFromEnv
+    : `Zoho-enczapikey ${tokenFromEnv}`;
+
+  return new SendMailClient({ url, token });
+};
+
+export const emailService = {
+  /**
+   * Send a generic email
+   */
+  async sendEmail(input: SendEmailInput): Promise<boolean> {
+    try {
+      const client = initializeEmailClient();
+      const fromAddress = process.env.ZEPTOMAIL_FROM_ADDRESS || "hi@opensox.ai";
+      const fromName =
+        process.env.ZEPTOMAIL_FROM_NAME || "Ajeet from Opensox AI";
+
+      await client.sendMail({
+        from: {
+          address: fromAddress,
+          name: fromName,
+        },
+        to: input.to.map((recipient) => ({
+          email_address: {
+            address: recipient.address,
+            name: recipient.name,
+          },
+        })),
+        subject: input.subject,
+        htmlbody: input.htmlBody,
+        ...(input.textBody && { textbody: input.textBody }),
+      });
+
+      return true;
+    } catch (error) {
+      if (process.env.NODE_ENV !== "production") {
+        console.error("Email sending error:", error);
+      }
+      throw new Error("Failed to send email");
+    }
+  },
+
+  /**
+   * Send premium subscription confirmation email
+   * This is sent when a user subscribes to Opensox Premium
+   */
+  async sendPremiumSubscriptionEmail(
+    email: string,
+    firstName: string
+  ): Promise<boolean> {
+    const htmlBody = `
+      <div style="font-family: Arial, sans-serif; max-width: 600px; margin: 0 auto; padding: 20px;">
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          Hi ${firstName},
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          I am Ajeet, founder of Opensox AI.
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          First of all, <strong>thank you for believing in me and Opensox AI.</strong>
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          Throughout this journey, I will make sure you get the best value for your money.
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          To get started, please book your slot in the cal meet.
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          Let's have a chat over a meeting so that I can understand where you are currently and how I can help you move ahead.
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          Soon, I'll add you to the private Slack so that we can talk regularly.
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          Again, thank you :)
+        </p>
+        
+        <div style="margin: 30px 0; text-align: center;">
+          <a href="https://cal.com/ajeetunc/secret" 
+             style="background-color: #007bff; color: white; padding: 14px 32px; 
+                    text-decoration: none; border-radius: 6px; display: inline-block; 
+                    font-weight: 600; font-size: 16px;">
+            📅 Book Your Meeting
+          </a>
+        </div>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px;">
+          <strong>Cal:</strong> <a href="https://cal.com/ajeetunc/secret" style="color: #007bff;">https://cal.com/ajeetunc/secret</a>
+        </p>
+        
+        <p style="color: #333; line-height: 1.8; font-size: 16px; margin-top: 30px;">
+          Best,<br/>
+          Ajeet from Opensox.ai
+        </p>
+      </div>
+    `;
+
+    const textBody = `Hi ${firstName},
+
+I am Ajeet, founder of Opensox AI.
+
+First of all, thank you for believing in me and Opensox AI.
+
+Throughout this journey, I will make sure you get the best value for your money.
+
+To get started, please book your slot in the cal meet.
+
+Let's have a chat over a meeting so that I can understand where you are currently and how I can help you move ahead.
+
+Soon, I'll add you to the private Slack so that we can talk regularly.
+
+Again, thank you :)
+
+Cal: https://cal.com/ajeetunc/secret
+
+Best,
+Ajeet from Opensox.ai`;
+
+    return this.sendEmail({
+      to: [{ address: email, name: firstName }],
+      subject: "Congratulations! You are in.",
+      htmlBody,
+      textBody,
+    });
+  },
+};