For a small business, email is the one marketing channel you own. Social media reach goes up and down; your list of customers who want to hear from you stays. Done well, a monthly email can bring back old customers, fill slow days and announce new products at almost no cost.
Start with permission
The single most important rule: only email people who agreed to hear from you. It’s the right thing to do, it keeps you on the right side of data-protection law such as India’s Digital Personal Data Protection Act, 2023, and it’s what keeps your mail out of spam. Never buy email lists.
Good ways to collect addresses with consent:
- A “get offers by email” checkbox at billing or on your website checkout
- A sign-up sheet or QR code at your counter
- Asking customers who email you if they’d like occasional updates
- An event, workshop or free guide that people sign up for
Organise your contacts into lists
Keep separate lists for groups that want different things — for example “Retail customers”, “Wholesale buyers” and “Event sign-ups”. In WhySharedMail campaigns you can create lists and upload contacts from a CSV file exported from your billing software or spreadsheet. Anyone who unsubscribes is automatically excluded from every list.
What to send
| Email type | Example |
|---|---|
| Offers | Festive sale, early-access discount for subscribers |
| New arrivals | New menu, new collection, new service |
| Useful tips | A CA firm’s GST deadline reminder, a clinic’s monsoon health tips |
| Updates | New branch, changed hours, holiday closures |
| Thank-you notes | Year-end thank you with a small gift voucher |
One clear message per email works better than five. Use a subject line that says what’s inside: “Diwali sale: 20% off until Sunday” beats “Newsletter #14”.
Write it like a person
- Use a real sender name — “Asha from Greenleaf Café” — on your own domain.
- Keep it short, with one main button or link.
- Personalise with the customer’s name where it feels natural.
- Mix text and images; never send a single big image.
Send at a sensible pace
Sending thousands of emails at once from a small domain looks suspicious to inbox providers. Send in batches and let volume grow over time. WhySharedMail campaigns let you set how many emails go out per hour and per day, and schedule a campaign for the time your customers are most likely to read it — often mid-morning or early evening.
Make unsubscribing easy
Every marketing email must include a clear unsubscribe link, and since 2024 Gmail and Yahoo also expect “one-click” unsubscribe support from bulk senders. It feels counter-intuitive, but an easy exit protects you: people who can’t find the link press “Report spam” instead, which hurts all your future mail. Our campaign tool adds both automatically.
Keep your domain healthy
Before your first campaign, make sure SPF, DKIM and DMARC are set up — see our DNS guide — and read why emails go to spam. Remove addresses that bounce and pause anyone who hasn’t opened anything in a year.
Measure what matters
Watch three numbers: how many emails were delivered, how many people unsubscribed, and what happened in your business afterwards — orders, bookings, calls. If unsubscribes jump, you’re sending too often or the content doesn’t fit the list.
Ready to try it? Campaigns are included in your WhySharedMail dashboard — create a list, write your first email and schedule it in minutes.
Frequently asked questions
Is email marketing legal in India?
Yes, when people have agreed to receive your emails. India’s Digital Personal Data Protection Act, 2023 requires a lawful basis such as consent to use personal data, and global providers like Gmail expect an easy unsubscribe. This guide is general information, not legal advice.
How often should a small business send emails?
Once or twice a month is a good start for most businesses. Send more only if you have genuinely useful news, offers or content, and watch unsubscribes.
Can I email customers who bought from me before?
Customers who bought from you and gave you their email usually expect occasional updates, but you should still offer an unsubscribe link in every email and stop immediately if they opt out.