In brief: Email marketing in India now starts with consent. The Digital Personal Data Protection Act, 2023 requires consent that is free, specific, informed, unconditional and unambiguous with a clear affirmative action, and its Rules were notified on 14 November 2025 with an eighteen-month phase-in. Gmail adds technical checks: every sender needs SPF or DKIM, and senders of more than 5,000 messages a day need DMARC and one-click unsubscribe, with spam complaints under 0.3%. For a small business, the safest start is a small consented list and one useful email a month.
Here is a typical example. An insurance broker in Navrangpura has 2,300 email addresses in a sheet, collected over eight years. Most came from old enquiries, a few from a trade fair, and some from nobody remembers where. He wants to start a monthly newsletter. Before he sends anything, he needs three answers. Did people agree to hear from him, will Gmail trust his mail, and is each email worth opening?
Key Takeaways
- The DPDP Rules were notified on 14 November 2025.
- Consent must be specific, informed and given by a clear action.
- Gmail requires SPF or DKIM for every sender.
- Big senders need DMARC and one-click unsubscribe.
- Start with people who asked to hear from you.
Does Email Marketing Still Work in India?
Yes, for the right job. Email works best with people who already know you, such as past customers, enquiries that went quiet and business buyers. It reaches them in a place you control, at a cost far lower than paying for every view. It suits longer messages that WhatsApp handles poorly.
For a small business, the value is ownership. Your followers on Instagram belong to Instagram’s algorithm, which decides who sees each post. Your email list belongs to you, and a message you send reaches every inbox on it, subject to the checks below.
Email also suits certain businesses better than others. A clinic sending a monthly care tip, a B2B supplier sharing a price list, or a travel agency announcing next season’s packages all fit well. A shop selling impulse buys may find WhatsApp faster.
Email also holds its value in the busiest season. In the weeks before Diwali, when every advert costs more, your own list costs no more to reach than it did in June.
Our guide to WhatsApp Business marketing in India covers that channel. Most businesses that do email well use both, each for what it does best.
Who Can You Legally Email in India?
People who gave you clear consent for that purpose. India’s data protection law sets the standard, and its Rules were notified on 14 November 2025. Consent has to be specific and given by a clear action, so an address collected for a quote does not quietly become a newsletter subscriber.
The Digital Personal Data Protection Act, 2023 says consent “shall be free, specific, informed, unconditional and unambiguous with a clear affirmative action”. It also lets people withdraw consent at any time. Leaving must be easy. The Act asks for withdrawal “with the ease of doing so being comparable to the ease with which such consent was given”.
The government’s summary of the DPDP Rules adds two practical points. The Rules bring in “an eighteen-month period for phased compliance”. And every business “must issue a separate consent notice that is clear and easy to understand”.
In plain terms, a ticked box saying “send me offers and tips by email” counts as a clear action. A pre-ticked box, or an address copied from a visiting card, does not. This is general guidance, so check your own case with a lawyer before you mail an old list.
What Does Gmail Require Before Your Emails Land?
Proof that the email really comes from you, and an easy way out for anyone who wants it. Gmail checks every message before it reaches the inbox. Mail that fails those checks lands in spam or gets rejected, however good the content inside it is.
Gmail’s sender guidelines set a baseline for everyone. Every sender must “set up SPF or DKIM email authentication for your sending domains”. SPF and DKIM are settings in your domain that help prove an email really comes from you. Your website or email provider can switch them on. Spam complaints must stay “below 0.3%”.
You do not need to understand the technical side. Ask your provider one plain question: are SPF and DKIM set up for our domain? If the answer is no, it is usually a short job for them. It is also the most useful thing you can fix this month.
Senders who send more than 5,000 messages a day to Gmail accounts must do more. They need SPF, DKIM and DMARC together. Marketing emails must “support one-click unsubscribe” and show “a clearly visible unsubscribe link in the message body”.
Most small businesses send far fewer than 5,000 a day. Setting up all three records anyway costs little, and it protects you as the list grows.
How Do You Start Email Marketing in India From Zero?
Ask for permission at the moments people already trust you. The best list for a small business is built slowly, from people who chose to join. In our view, a list of 300 who said yes is worth more than 3,000 addresses from old visiting cards. It also carries far less risk.
These are the sign-up points that tend to work:
- Your website. A short form with one clear promise, such as “a monthly tip and early offers”.
- The enquiry form. Add a separate, unticked box for updates, kept apart from the enquiry itself.
- Your front desk or checkout. A tablet or a QR code at the counter, with the purpose written beside it.
- Your best content. A free price guide or checklist that people request by email.
Keep proof of each sign-up, with the date and where it came from. If a customer later asks how you got their address, that record answers the question. A useful rule of thumb: if you cannot say when and where someone joined, treat them as not on the list.
Send people to a page built for the sign-up. Our guide to landing pages that convert covers what that page needs.
What Should a Small Business Send?
Something useful, on a rhythm people can expect. One good email a month beats four rushed ones. Each email should do one job, such as teaching, announcing or asking for something. It should also sound like a person at your business wrote it.
Write a subject line that says what is inside, in plain words. Keep the email short enough to read on a phone, with one link to one page. A simple working rule for small business email is one job per email, one link per email, and one email a month to start.
Here is an illustration. A skincare clinic in Satellite could send a tip on the first Tuesday of each month, with a single button to book. That is twelve emails a year, each easy to write and each with one clear next step.
The Numbers That Show It Is Working
Clicks, replies, bookings and unsubscribes tell you the most. Open rates are worth a glance, but clicks and replies show far more clearly whether people acted. What you want to know is whether people acted after reading, and whether the list is growing faster than it shrinks.
Here is an illustration with made-up figures. Say 300 people get your March email and 24 of them click the link, which is an 8% click rate. If two people unsubscribe and nobody marks it as spam, the list is healthy and the pace suits your readers.
Track four numbers each month in a simple sheet. The click rate shows if the content is useful. Replies and bookings show if it earns money. Unsubscribes show if you send too often, and spam complaints should stay under Gmail’s 0.3% limit.
Link each email to a tracked page, so your analytics can see what the visitors did next. Our guide to Google Analytics reports that matter shows which report to use.
Where to Start
Remember one thing above all: a list is only worth having if every person on it said yes. This week, ask the person who runs your website or email to switch on SPF and DKIM, so Gmail can trust your mail.
Then add a separate, empty tick box for updates to your enquiry form. Send your first useful email next month, only to the people who joined.
If you want more enquiries to build your list from in the first place, our lead generation team in Ahmedabad can help.
Frequently Asked Questions
Is email marketing legal in India?
Yes, when people have given clear consent. The DPDP Act requires consent that is specific, informed and given by a clear action, and its Rules were notified on 14 November 2025. People must be able to withdraw as easily as they joined. Check your own setup with a lawyer.
Can I email customers whose addresses I already have?
Only if they agreed to receive that kind of email. An address given for a quote or an invoice was given for that purpose. The safer route is to ask existing customers once, clearly, whether they want updates, and email only those who say yes.
Why are my marketing emails going to spam?
Often because the domain is not authenticated, or because too many people mark the emails as spam. Gmail requires SPF or DKIM for every sender and wants complaints under 0.3%. Set up the records, mail only people who asked, and make leaving easy.
How often should a small business send emails?
Once a month is a good start for most small businesses. It keeps you remembered without wearing out the list. Send more only when you have something worth saying, and watch unsubscribes after each email to see whether the pace still suits your readers.
Is email better than WhatsApp for marketing?
They do different jobs. WhatsApp suits short, urgent messages that people read quickly. Email suits longer content, B2B buyers and anything people may want to keep. Many small businesses use both, sending a monthly email and saving WhatsApp for timely updates.
