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Email Marketing for Small Business: Automation Guide
April 9, 2026 · 5 min read
Email marketing returns $36-$40 for every $1 spent. No other channel comes close. And with Mailchimp's free tier (up to 500 contacts), you can start without spending a cent.
The Three Sequences Every Small Business Needs
1. Welcome Sequence (3-5 emails)
Triggers when someone joins your email list. This is your first impression.
Email 1 (Immediately): Thank them. Deliver whatever you promised (discount, guide, etc.).
Email 2 (Day 2): Introduce yourself and your business. Tell your story briefly.
Email 3 (Day 4): Share your most popular product or service. Include social proof.
Email 4 (Day 7): Provide genuine value — a tip, resource, or insight related to their problem.
Email 5 (Day 10): Make an offer. This is where you convert subscribers into customers.
2. Review Request Sequence (2 emails)
Triggers 3-7 days after a purchase or service completion.
Email 1: Simple ask. "How was your experience? If you have 30 seconds, a Google review helps us reach more people like you." Include a direct link to your Google review page.
Email 2 (5 days later, if no review): Gentle reminder with the same link.
This single sequence can generate dozens of reviews per month on autopilot.
3. Re-Engagement Sequence (2-3 emails)
Triggers when someone hasn't opened an email in 60-90 days.
Email 1: "We miss you" with a special offer or updated content.
Email 2: "Last chance" — if they don't engage, let them know you'll stop emailing.
Email 3: Final email. Remove non-responders from your active list to keep deliverability high.
Setting This Up for Free
- Create a Mailchimp account (free up to 500 contacts)
- Import your existing customer list
- Set up each sequence as an "automation" or "customer journey"
- Write the emails using AI — Chapter 25 of The $20 Dollar Agency has copy-paste prompts for every type
Advanced: Industry-Specific Sequences
Chapter 31 of the book covers email automation by industry:
- Restaurants: Birthday/anniversary offers, seasonal menus
- Salons: Appointment reminders, rebooking nudges
- Home services: Seasonal maintenance reminders (HVAC tune-ups, gutter cleaning)
- E-commerce: Abandoned cart, post-purchase upsell, restock reminders
- Professional services: Case study series, consultation offers
Metrics to Watch
- Open rate: 20-25% is healthy for small business
- Click rate: 2-5% is typical
- Unsubscribe rate: Under 0.5% per email
- Revenue per email: The metric that matters most
Track everything in Mailchimp's built-in analytics. Cross-reference with Google Analytics 4 to see which emails drive actual sales.
The Bottom Line
Three automated sequences. One free tool. Set them up once and they run forever. Your agency was charging you $200-$400/month for this exact work. Now you own it.