Email still generates $36 for every $1 spent, according to Litmus (2023). But the tool you pick determines whether you’re sending smart automations or glorified spam. We’ve tested these platforms on lists from 500 to 200,000 subscribers. Here’s what actually works.
Last updated: March 2026 · Reading time: 15 min
What is an email marketing tool? An email marketing tool is software that lets you build email lists, design campaigns, set up automated sequences, segment subscribers, and track performance metrics like open rates, click rates, and revenue attribution.
| Tool | Free Plan? | Price at 1K Contacts | Price at 10K Contacts | Pricing Model | Best For |
|---|---|---|---|---|---|
| Mailchimp | 500 contacts | $13/mo (Essentials) | ~$100/mo (Standard) | Contact-based | Small businesses |
| Klaviyo | 250 contacts | $30/mo | $150/mo | Active profiles | E-commerce (Shopify) |
| ActiveCampaign | No | $15/mo | ~$160/mo (Plus) | Contact-based | Marketing automation |
| HubSpot | Yes (limited) | $20/mo (Starter) | $800+/mo (Professional) | Contact-based + tier | CRM + marketing suite |
| Kit (ConvertKit) | 1,000 subscribers | Free | ~$100/mo | Subscriber-based | Creators, newsletters |
| Brevo | 300 emails/day | $9/mo (Starter) | $9/mo (Starter) | Email volume | Unlimited contacts |
| GetResponse | 500 contacts | $19/mo | ~$79/mo | Contact-based | Webinars + email |
| Constant Contact | No | $12/mo (Lite) | ~$160/mo (Standard) | Contact-based | Nonprofits, events |
| Drip | No (14-day trial) | $39/mo | ~$154/mo | Contact-based | E-commerce automation |
| MailerLite | 1,000 subscribers | Free | ~$73/mo | Subscriber-based | Best value + clean UI |
| Omnisend | 250 contacts | $16/mo (Standard) | $132/mo (Standard) | Contact-based | E-commerce multichannel |
| Beehiiv | No | $49/mo (Scale) | $49/mo (Scale) | Subscriber tiers | Newsletter monetization |
| Moosend | No (30-day trial) | $7/mo (Pro) | ~$64/mo | Subscriber-based | Budget automation |
“We switched a client from Mailchimp Standard to Brevo and saved them $340/month. Their list was 25,000 contacts but they only emailed 15,000 regularly. With Brevo’s send-based pricing, they paid for actual usage instead of database size. The deliverability stayed identical.” Hardik Shah, Founder of ScaleGrowth.DigitalA good rule of thumb: if you email your entire list 2-4 times per month, contact-based pricing (MailerLite, Kit, ActiveCampaign) works fine. If you email segments of your list at different frequencies, volume-based pricing (Brevo) saves money. And if you run an e-commerce store, the revenue attribution from Klaviyo or Omnisend typically justifies the premium.
MailerLite offers the best free plan: 1,000 subscribers, 12,000 emails/month, drag-and-drop editor, landing pages, and pop-up forms. Kit (formerly ConvertKit) also offers a strong free plan with 1,000 subscribers and unlimited landing pages, though it lacks automations on the free tier. Brevo’s free plan allows 300 emails/day to unlimited contacts.
Mailchimp works well for small lists under 5,000 contacts who need a simple, familiar interface. But its pricing becomes unfavorable as your list grows, especially because it charges for unsubscribed contacts. MailerLite, Brevo, and ActiveCampaign all offer better value at 10,000+ contacts.
Klaviyo is the best email tool for Shopify stores, used by over 100,000 merchants. Its Shopify integration pulls order data, browsing behavior, and predicted lifetime value directly into email automations. For stores on a tighter budget, Omnisend offers similar e-commerce features at 30-40% lower cost.
If you email your full list 2-4 times per month consistently, contact-based pricing (MailerLite, Kit, ActiveCampaign) is usually fair. If you have a large list but only email portions of it or send infrequently, send-based pricing (Brevo) saves significant money. Calculate your monthly sends and compare both models before committing.
Average email open rates range from 15-25% across industries, according to multiple platform reports. However, Apple’s Mail Privacy Protection (introduced in iOS 15) inflates open rate data by pre-loading tracking pixels. Click-through rate (2-5% average) and conversion rate are more reliable performance indicators in 2026.
We’ve migrated clients between email platforms over 30 times and built automated sequences that generate consistent revenue. Our email marketing services cover strategy, platform selection, and implementation. Get Email Strategy Help Talk to Us