Transactional Email Service for Receipts, OTPs and Alerts

What counts as transactional email

A transactional email is one a person expects because of something they did. They placed an order, paid a bill, asked for a password reset or signed in from a new device. Each email goes to one person, carries information about their account and is usually needed within seconds.

Offers, newsletters and festival greetings are marketing email, even when they go to existing customers. Our platform keeps the two apart. You mark each send as transactional or marketing, and marketing emails automatically get a one-click unsubscribe header. Keeping receipts separate from promotions also protects them: if a campaign draws complaints, your invoices are not the ones that suffer.

• Order confirmations, receipts and GST invoices
• Login codes, sign-up confirmations and password resets
• Payment due, payment received and subscription renewal notices
• Shipping updates, booking confirmations and appointment details
• Security alerts, such as a sign-in from a new device

How sending works

Your app sends one HTTPS request to the email API with your API key, the From address, the recipient, a subject and either HTML or a saved template ID with variables. The API replies at once with a message ID for each recipient, so you can store it against the order or user.

For invoices, attach the PDF in the same request. You can also schedule an email for later, up to 30 days ahead, and pass an idempotency key so a retried request never sends the same receipt twice. If you already send SMS with us, the same API key works for email.

Getting into the inbox, not spam

Gmail, Yahoo and Outlook check who is allowed to send for a domain before they accept an email. Before we switch email on for your account, you add your sending domain in the panel and publish the DNS records we show you. The platform checks SPF, DKIM and DMARC and re-checks them every day after that.

Emails must come from a domain you own, such as billing@yourcompany.in. Free addresses like Gmail cannot be used as the sender, because those providers do not let anyone else sign mail for them.

Hard bounces, spam complaints and unsubscribes go on a suppression list for your account. Later emails to those addresses are skipped and not charged, which keeps your bounce rate low and your domain's reputation clean.

Tracking every email

Each email moves through clear states: accepted, delivered, deferred, bounced, complained, failed or rejected. Set a webhook URL and we post each event to your server, signed with a shared secret so you can verify it came from us. Open and click events are available too, if you switch them on.

In the panel you can search messages by date, status or recipient and export reports as CSV. That is useful when a customer says they never got their invoice: you can see whether it was delivered, bounced or blocked by their mail server.

Email alongside SMS and WhatsApp

Many businesses send the same event on two channels. A bank sends the OTP by SMS and the monthly statement by email. A shop sends a short SMS when an order ships and the full GST invoice by email. You manage both from one account, with a separate email credit balance and one support team that knows both channels.