12 Best Email Marketing Tools for Growing Startup in 2026, Compared

Brevo is the cheapest paid plan in this list because it charges by emails sent, not by contacts. Starter costs $9 a month for 5,000 emails, and the free plan stores up to 100,000 contacts while sending 300 emails a day. The same account adds SMS, WhatsApp, live chat and a CRM, so a startup can run most of its customer messaging from one login instead of three.

The catch is the contact cap on the cheap tiers. The $9 tier only stores 500 contacts, so a 3,000-contact list must buy a higher volume tier even if it sends rarely. Removing the Brevo logo costs extra on Starter, and full automation needs Standard at $18 a month. Count your contacts before you count your emails, or the first invoice will surprise you.

MailerLite is the easiest $12 in this list. Comfort costs $12 a month for 500 subscribers and includes the AI writing assistant, smart sending, dynamic content and 50 automations, plus landing pages, forms, a website builder and digital-product sales. Only active subscribers count toward billing, so bounced and unsubscribed contacts never cost you money.

Two honest caveats. The June 2026 pricing reset renamed the plans and raised prices, and it cut the free plan to 250 subscribers and 2,500 emails a month. Comfort also caps sends at ten times your subscriber tier, so a 500-subscriber list sends at most 5,000 emails a month. If you mail daily to a full list, Power at $25 a month removes the caps.

Mailchimp is the default choice in email marketing, and the entry price is still friendly: Essentials costs $13 a month for 500 contacts, with sends up to ten times your contact count, three seats, A/B testing and automation flows up to four steps. The template library and the 300-plus integrations are the deepest in this list, and every paid plan includes 24/7 email and chat support.

The price is what to watch. Standard costs $60 a month at 2,500 contacts and $135 at 10,000, and unsubscribed contacts count toward your billing tier until you archive or delete them. The free plan shrank in February 2026 to 250 contacts and 500 sends a month. Buy Mailchimp for the ecosystem and the support, not because it stays cheap as you grow.

ActiveCampaign is the automation pick in this list. Starter costs $15 a month billed annually for 1,000 contacts and includes multi-step, branching automation workflows plus a CRM with deal pipelines, so sales follow-up lives in the same account as the newsletter. Sends run up to ten times your contact count a month, and the template library covers more than 250 designs.

The limits are real. Each automation on Starter is capped at five actions, so serious sequences need Plus at $49 a month. There is no free plan, only a 14-day trial, and the price roughly doubles with every step up the contact ladder. AI features, SMS credits and transactional email are paid add-ons, so budget for the stack, not just the headline price.

Moosend is the simplest pricing story in this list: one self-serve plan, Pro, with everything in it. Unlimited sends, automation workflows, landing pages, forms and A/B testing cost $9 a month for 500 subscribers, or $7 a month billed annually. The price follows only your subscriber count, never your feature use, so there are no tier surprises waiting at the next upgrade.

The trade-off is that there is no free plan at all, only a 30-day trial that needs no credit card. There is also no mid-tier, so a growing list jumps straight to higher volume pricing, and the integration library is thinner than Mailchimp's or ActiveCampaign's. Moosend is the right pick when the budget is fixed and the feature list is already enough.

Kit, formerly ConvertKit, is built for creators, and its free plan is the most generous in this list: the Newsletter plan covers up to 10,000 subscribers with landing pages, forms and broadcasts. Creator costs $39 a month for 1,000 subscribers and adds visual automations, sequences, A/B subject lines and paid recommendations, plus built-in commerce and paid newsletters.

The price history matters. Kit raised Creator from $29 to $39 a month in late 2025, a 34% jump, and paid plans start at 1,000 subscribers, so a 300-person list pays the 1,000-subscriber price. Commerce also takes 3.5% plus $0.30 on every sale. Kit is the right pick when the audience itself is the business, not when email is just a channel.

Omnisend is built for online stores, and it shows from the first hour: connect Shopify or WooCommerce and the abandoned-cart, welcome and post-purchase flows are ready to switch on. Standard costs $16 a month for 500 contacts with 6,000 emails, and the AI subject-line and copywriting tools work on the free plan too. Support is 24/7 live chat and email on every plan, including free.

Two changes to know about. Since May 2026, new sign-ups cannot buy SMS on Standard; Pro is needed for SMS credits. And billable contacts include non-subscribers who receive automated order messages, so checkout buyers inflate the count even if they never joined the list. For email-led ecommerce, Omnisend is the value pick; for stores where predictive segmentation drives revenue, Klaviyo justifies its higher price.

Klaviyo is the data pick for ecommerce. The Email plan costs $20 a month for 500 active profiles and includes predictive analytics, deep segmentation and the AI subject-line generator, with more than 350 integrations and the deepest Shopify connection in this list. Features are identical at every tier, so growing only changes the price, never the feature set.

The billing unit is the thing to understand. Klaviyo charges for every active profile, including checkout opt-ins who never subscribed, and suppressed profiles are the only ones not billed. SMS, Reviews and Customer Hub are billed on top, and at 10,000 profiles the Email plan is $150 a month. Buy Klaviyo when segmentation drives revenue, not when you only send a newsletter.

GetResponse is the all-in-one pick in this list. Starter costs $19 a month for 1,000 contacts and includes unlimited monthly email sends, a landing-page builder, signup forms, popups and an AI email generator. Every paid plan sends without a monthly cap, so a startup that mails daily never pays overage fees, and Marketer adds sales funnels, abandoned-cart recovery and promo codes.

The entry plan is thinner than the headline suggests. Starter includes only one custom automation workflow, AI content is limited to three uses, and webinars need Creator at $69 a month. Annual billing saves about 18% but is non-refundable. GetResponse fits a startup that wants one subscription for email, pages and funnels, not one that needs deep automation on day one.

Constant Contact is the simplest tool in this list, and that is the point. Lite costs $12 a month for 500 contacts with sends up to ten times your contact count, and it includes social posting tools, event registration and live phone support. The 30-day free trial needs no credit card, and nonprofits save up to 30% by prepaying a year.

The limits are real. There is no free plan, and Lite includes just one automation template, so real sequences need Standard at $35 a month. The price also rises through thirteen contact tiers, reaching $430 a month on Lite at 50,000 contacts. Constant Contact is the right pick for a founder who wants the easiest editor and a human on the phone, not for an automation-heavy team.

AWeber has been selling email marketing since 1998. There is no free plan, only a 14-day free trial with no credit card, so test the editor and automations before paying. Lite costs $15 a month for 500 subscribers and includes 5,000 sends a month, three team seats and a landing-page builder, with 24/7 live chat and phone support behind it.

The caps are what push people to Plus at $30 a month: Lite allows only three automations, three landing pages and one list. The editor and template library also feel dated next to MailerLite and Kit, and Lite costs $60 a month at 5,000 subscribers. AWeber fits a solo founder who wants a long-running tool and a human on support, not a team that needs modern automation.

HubSpot is the CRM pick in this list. Marketing Hub Starter costs $20 a month per seat with 1,000 marketing contacts included, and it sits on the same contact record as the free CRM, so marketing, sales and support never re-enter the same customer. Starter removes HubSpot branding and adds landing pages, live chat and email automation, and the free tier already covers forms, email and ad management for two users.

The pricing model is the risk. Starter charges per seat and per 1,000 marketing contacts, so a three-person team with 5,000 contacts pays far more than $20 a month. The jump to Professional is $890 a month plus a $3,000 onboarding fee, with no middle tier. Buy HubSpot when the CRM is the point; buy a dedicated email tool when only email is.