Most "best bulk SMS for small business" articles conflate two completely different use cases: local retail businesses texting existing customers, and small businesses running lead generation campaigns to prospect lists. Different tools, different pricing, different compliance. This guide splits them properly so you can pick the right tool for what you're actually doing.
Two Different Small Business Use Cases
Use case A — Customer retention SMS: Restaurant texting Friday specials to signup subscribers. Gym texting class reminders to members. Retailer texting promotions to loyalty club. Volume: 500-10,000 subscribers, messages 1-4x per month. Platform need: opt-in tooling, two-way support, keyword campaigns.
Use case B — Lead generation SMS: Real estate agent texting motivated sellers. Insurance agent texting prospects. Contractor texting homeowner lists. Volume: 10k-100k SMS per campaign, run monthly or as-needed. Platform need: cold-list tolerance, flat-rate pricing, high-volume infrastructure.
These are genuinely different products. A platform that excels at one fails at the other. The biggest mistake small businesses make is trying to use a retention-focused platform for lead gen (gets suspended) or a lead-gen platform for retention (overpaying for unused capacity).
Best for Customer Retention (Use Case A)
SimpleTexting
Clean interface, good automation flows, strong two-way inbox, MMS support. Pricing $39-$299/month by subscriber count. Credits don't expire. Best fit for retail, restaurants, service businesses with 500-10k subscribers.
EZTexting
Longer-running platform with solid keyword opt-in tooling ("Text PIZZA to 31313"). Credit-based with monthly expiration. Pricing $29-$299+/month. Better for keyword-driven acquisition than SimpleTexting. Slightly dated UX.
Klaviyo (for e-commerce only)
Best-in-class if you're on Shopify or BigCommerce and want email + SMS in the same platform with deep e-commerce integration. Not suitable for non-ecommerce businesses. Pricing scales with list size — $60-$700+/month typical.
Attentive (for high-volume e-commerce)
Enterprise-grade e-commerce SMS marketing. Best deliverability and automation. Requires $5k+/month minimums, not small-business pricing. Mention only for business owners who grow beyond Klaviyo tier.
Best for Lead Generation (Use Case B)
Smarterblast
Flat-rate campaign pricing — $399 for 100k SMS, $599 for 500k, $899 for 2M. No subscription. 10DLC registration handled. Designed for cold-list outbound. Good fit for real estate investors, insurance agents, contractors, B2B sales, political campaigns. Not a fit for ongoing subscriber-list management.
Twilio (developer-built custom solution)
Only makes sense if you have technical resources to build on the API. Can be cheaper than Smarterblast at small scale (under 10k SMS) but requires managing 10DLC, throttling, list hygiene, and compliance yourself. Time investment rarely worth it for non-technical small businesses.
Pricing Comparison for a Typical Small Business Scenario
Scenario 1: Retail business with 2,500 opt-in subscribers, sending 3 campaigns/month (7,500 SMS/month).
| Platform | Monthly Cost |
|---|---|
| SimpleTexting | ~$79/month |
| EZTexting | ~$79-$129/month |
| Klaviyo (with email) | ~$100-$180/month |
| Smarterblast | Not fit for this scale |
Scenario 2: Real estate agent running one 10k SMS campaign/month to skip-traced motivated sellers.
| Platform | Cost Per Campaign |
|---|---|
| SimpleTexting | Account suspended — wrong use case |
| EZTexting | Account suspended — cold lists prohibited |
| Twilio (DIY) | ~$95 + dev time |
| Smarterblast | $399 (Bronze, 100k capacity) |
Decision Framework
Answer these three questions in order:
- Did your contacts explicitly sign up to receive your texts? If yes, you want a retention platform (SimpleTexting, EZTexting, Klaviyo for ecom). If no, skip to #3.
- How many subscribers do you have? Under 10k → retention platform. Over 10k → consider Klaviyo (ecom) or Attentive (enterprise).
- Are you running outbound campaigns to lists you purchased, skip-traced, or scraped? If yes, you need a bulk/blast service built for cold outbound. Smarterblast is the market answer for 10k-2M SMS per campaign volume.
Small Business Mistakes to Avoid
- Using Twilio "because it's cheap." Non-developers almost never save money on Twilio. Implementation time, compliance overhead, and phone number management add up to more than a managed platform.
- Uploading a customer list from your POS system as an "opt-in" list. Most state laws (and platform TOS) require explicit opt-in to SMS specifically, not just general customer status. Purchase receipts don't count.
- Expecting subscriber platforms to handle cold outreach. EZTexting, SimpleTexting, Klaviyo, Attentive all have TOS that prohibit purchased lists. Don't try to trick their systems — you'll lose the account and any paid credits.
- Not registering 10DLC. Every US A2P SMS requires 10DLC registration. Skipping it means 40-70% delivery and eventual account flags.
- Starting too small. Sending 500 SMS and evaluating results is statistically meaningless. Real testing requires 5k-10k minimum to produce useful reply-rate and conversion data.
Running Lead Generation Campaigns?
Flat-rate from $399. Built for cold lists. 24-hour launch.
View Smarterblast →Frequently Asked Questions
What's the cheapest option for a very small business?
SimpleTexting starts at $39/month for opt-in subscriber texting. EZTexting has similar entry pricing. For lead-gen outbound, there's no real "small business tier" — campaigns start at $399.
Can I use my existing customer email list for SMS?
Only if customers specifically opted in to SMS, not just to email. Email opt-in doesn't transfer to SMS in most states. Send a permission campaign first, or consider cold outbound platforms that use different compliance models.
What if I only need to send 500-1000 SMS per month?
SimpleTexting or EZTexting starter tiers at $39-$49/month are sufficient. Below 200 SMS/month, even free Google Voice handles it — but check volume limits and note it doesn't support A2P marketing.
How do I know if I'm on the right platform?
Red flags: delivery rates below 90%, unexpected account holds or reviews, unexplained price escalations, inability to upload lists you consider legitimate. Any of these means the platform isn't fit for your use case.
Is bulk SMS worth it for businesses under 50 customers?
Usually not. Below 50-100 contacts, direct one-to-one messaging works better than automated campaigns. Bulk SMS economics require minimum 500-1,000 contacts to generate meaningful ROI over the platform cost.