The 7 best email marketing services in 2026, ranked
By Jean Luc Poitier, SEO and growth marketing strategist · Campaign Monitor Reviews · Updated October 4, 2026
Disclosure: this site reviews Campaign Monitor and earns a commission if you sign up for it through our links. Campaign Monitor is one option below, and we say where it isn't the right fix.
The right email tool depends on what you send and who sends it. We ranked seven well-known services for the readers this site serves: small teams, nonprofits, and agencies sending regular newsletters. Each entry says who it fits best, so the number matters less than the label. We earn a commission if you sign up for Campaign Monitor through our links; the prices and ratings below come from each company's own pricing page and from G2.
The best email marketing services compared
| # | Service | Best for | Price at 500 contacts | Free plan | G2 rating (reviews) |
|---|---|---|---|---|---|
| 1 | Campaign Monitor | Small teams, nonprofits, and agencies | $13/mo (Lite); $31/mo for unlimited sends | No; 30-day trial, no card | 4.1 (731) |
| 2 | MailerLite | A free plan and low prices as you grow | $12/mo (Comfort); $25/mo for unlimited sends | Yes, 250 subscribers | 4.6 (1,123) |
| 3 | Brevo | Large contact lists on a small budget | $9/mo (Starter, 5,000 emails) | Yes, 300 emails a day | 4.5 (2,621) |
| 4 | ActiveCampaign | Advanced marketing automation | $15/mo (Starter, 1,000 contacts, billed annually) | No; 14-day trial, no card | 4.4 (14,647) |
| 5 | Klaviyo | Ecommerce stores, especially on Shopify | $20/mo (500 active profiles, 5,000 sends) | Yes, 250 active profiles | 4.6 (1,356) |
| 6 | Mailchimp | Growing from a free plan into automation flows | $13/mo (Essentials); $20/mo (Standard) | Yes, 250 contacts | 4.3 (12,988) |
| 7 | Constant Contact | Phone support on every plan | From $12/mo (Lite)* | No; 30-day trial | 4.1 (7,237) |
Monthly prices from each company's pricing page as of 2026-10-04, monthly billing unless noted. ActiveCampaign's smallest tier is 1,000 contacts and it publishes annual-billing prices only. *Constant Contact's site blocked our check; its price is from a search listing of its pricing page. G2 ratings are each product's G2 listing as of 2026-10-04.
The 7 best email marketing services, reviewed
1. Campaign Monitor
Best for: Small teams, nonprofits, and agenciesRanked first for the buyers this site writes for. Reviewers on G2 and Capterra keep coming back to how fast new staff and clients learn the drag-and-drop builder, and G2 gave it Easiest To Use and Best Support (Small Business) badges for Fall 2026. It is the only service here that puts client sub-accounts and private labeling on every paid plan, which is why Zapier picks it for agencies with multiple clients. Essentials adds unlimited sends and unlimited automated emails at $31 a month for 500 contacts, and nonprofits can get 15% off through sales. The trade-offs: automation is simpler than some power users want, the price rises with list size, and phone support is on Premier.
Read Campaign Monitor reviews →2. MailerLite
Best for: A free plan and low prices as you growMailerLite says every paid plan gets its full feature set, and you pay more only for a bigger list or more sending. At 10,000 subscribers the unlimited-send Power plan is $129 a month. The free plan covers 250 subscribers and 2,500 emails a month with the MailerLite logo. There is no phone support, and agencies get no sub-accounts: each client needs its own plan.
Campaign Monitor vs MailerLite →3. Brevo
Best for: Large contact lists on a small budgetBrevo prices by emails sent, not contacts, and its free plan stores up to 100,000 contacts. That suits a big list you email occasionally. Sends are capped by the volume you buy, Starter emails carry Brevo branding unless you pay $10.80 a month to remove it, and phone support starts on the $499 Professional plan.
Campaign Monitor vs Brevo →4. ActiveCampaign
Best for: Advanced marketing automationThe pick if automation is your main need. Plus and higher plans allow unlimited automation actions, and it lists 950+ automation recipes. It also offers a 30-day money-back guarantee. Starter limits each automation to 5 actions, monthly prices aren't published, and human support is by chat and email only.
Campaign Monitor vs ActiveCampaign →5. Klaviyo
Best for: Ecommerce stores, especially on ShopifyBuilt around store data, with native integrations for ecommerce platforms like Shopify and 350+ pre-built integrations. Paid plans add predictive analytics and AI for segments and flows. You pay only for active profiles, so unsubscribed contacts don't count. SMS is billed separately, and no phone support is published.
Campaign Monitor vs Klaviyo →6. Mailchimp
Best for: Growing from a free plan into automation flowsOwned by Intuit, with a free plan for 250 contacts and a Standard plan that runs up to 200 automation flows. Essentials limits flows to 4 steps, unsubscribed contacts count toward your bill, and phone support is on Premium ($350 a month). Agencies connect separate client accounts, and no white label is offered.
Campaign Monitor vs Mailchimp →7. Constant Contact
Best for: Phone support on every planThe one to pick if you want to call someone. Phone support runs weekdays from 8am to 8pm ET and Saturdays from 10am to 6pm ET on every plan, and there is a 30-day money-back guarantee after your first payment. Automation is thinner on the lower plans: Lite allows 1 active automation path, and custom paths are on Premium.
Campaign Monitor vs Constant Contact →
Why Campaign Monitor ranks first for small teams
Most small teams don't have a designer or an email specialist, so the tool has to be easy to pick up and hard to get wrong. That is where Campaign Monitor's reviews are strongest: Capterra reviewers in our pull rate its ease of use 8.8 out of 10, and agencies describe running client email on it for years. It doesn't win on price at large list sizes or on automation depth, and the entries above say who should look elsewhere.
“Managing multiple clients in a single powerful email marketing platform has enabled my agency to offer a turnkey service for nearly two decades.”Verified User in Marketing and Advertising, G2, Jun 2026
See the Campaign Monitor pricing breakdown or try it first with the 30-day free trial.
How we ranked these email marketing services
We weighed four things for a small team sending a regular newsletter: how quickly a non-specialist can build and send a good email, what it costs at 500 to 10,000 contacts, how you reach support, and whether one account can manage several brands or clients. Prices and plan limits come from each vendor's pricing page and help center, checked on 2026-10-04. Review themes come from G2 and Capterra; for how we collect and score reviews, see our methodology. A different buyer, such as an online store or an automation-heavy sales team, would rank these differently, and the “best for” labels point them to the right pick.
Best email marketing services FAQ
What is the best email marketing service for small businesses?+
Campaign Monitor for small teams, nonprofits, and agencies that want polished newsletters with little setup. On a tight budget, MailerLite and Brevo cost less at most list sizes; for online stores, Klaviyo; for heavy automation, ActiveCampaign.
What is the cheapest email marketing service?+
At 500 contacts, Brevo Starter is $9 a month for 5,000 emails. Free plans: Brevo sends 300 emails a day, MailerLite covers 250 subscribers and 2,500 emails a month, and Mailchimp and Klaviyo cover 250 contacts.
Which email marketing service has phone support on every plan?+
Constant Contact. Campaign Monitor offers phone support on Premier, Mailchimp on Premium, and Brevo from its $499 Professional plan.
Which email marketing service is best for agencies?+
Campaign Monitor: client sub-accounts, private labeling, and markup billing are on every paid plan. ActiveCampaign offers white-label options through its reseller program, and Brevo has sub-accounts on Enterprise.