Brevo is one of the more interesting alternatives for organizations with substantial contact databases but relatively low email volume.

Rather than pricing marketing plans primarily on the number of contacts stored, Brevo emphasizes email sending volume. That can suit nonprofits, associations, membership organizations, and businesses that communicate with large audiences only a few times each month.

But Brevo does not provide unlimited contact storage on every plan. The Free plan allows storage of up to 100,000 contacts and 300 email sends per day.

Paid Starter and Standard plans link the maximum number of stored contacts to the selected sending tier. For example, Starter's lowest 5,000-email tier supports only 500 stored contacts. Its 10,000-email tier supports 1,500, while tiers beginning at 20,000 sends can support substantially larger databases.

Standard adds more extensive automation, A/B testing, send-time optimization, and reporting. Additional marketing seats, SMS usage, and other features may require add-ons or higher subscriptions.

Our take: Brevo deserves consideration when your database is large but your sending frequency is modest. Model the actual number of emails you send and verify the corresponding storage allowance. Do not assume that the $9 entry tier supports a 50,000-contact database.

Official sources: Brevo pricing and plan storage, sending limits, and add-ons.

MailerLite is an appealing alternative for organizations that primarily need newsletters, signup forms, landing pages, and straightforward email automations.

Its interface is comparatively approachable, and its paid plans offer a practical set of marketing capabilities without requiring an extensive CRM implementation.

MailerLite changed its pricing structure in June 2026. The current Free plan supports 250 active subscribers and 2,500 email sends per 30 days, rather than the older 1,000-subscriber allowance.

The Free plan includes basic automation, but limits the number of active workflows and steps. It also includes two user seats.

The current paid editions are Comfort, Power, and Enterprise. Comfort supports three users and monthly emails equal to 10 times the subscriber-tier ceiling. It also limits active automations, forms, landing pages, and websites.

Power includes unlimited user seats, monthly sends, and active automations, subject to applicable fair-use rules. It also offers additional support and higher usage allowances.

At 10,000 subscribers, MailerLite Comfort is approximately $89 per month on monthly billing. At 50,000 subscribers, the published monthly Comfort price is approximately $319.

Nonprofits receive an additional advantage. MailerLite offers qualifying nonprofit organizations a 30% discount on paid subscriptions. This does not stack with its 10% annual discount; the larger applicable discount is used.

For example, a verified nonprofit on the $89 Comfort tier would pay approximately $62.30 per month after the 30% discount, excluding taxes and other charges.

Our take: MailerLite is a particularly good option for nonprofits and smaller organizations that want straightforward email marketing. Its nonprofit discount makes it more competitive, but organizations using Constant Contact's event features need to price a replacement separately.

Official sources: MailerLite pricing, billing limits and nonprofit discounts, and published list-size comparisons.

Mailchimp is one of the most familiar alternatives to Constant Contact. It offers campaign editing, templates, audience management, reporting, marketing automation, and a broad third-party integration ecosystem.

Its current Free plan supports up to 250 contacts. Paid plans include Essentials, Standard, and Premium, with different user entitlements, automation capabilities, and email sending allowances.

Essentials includes three user seats, Standard includes five, and Premium provides broader team access. More sophisticated automation and reporting are concentrated in higher editions.

Mailchimp may be less expensive than Constant Contact in some scenarios, but that depends on the selected editions, contact tier, billing terms, and required sending volume.

The contact billing model deserves attention. Subscribed, unsubscribed, and non-subscribed contacts generally contribute to Mailchimp's paid contact limits. Cleaned and archived contacts do not. The same address stored in separate audiences can also count more than once.

This means moving from Constant Contact to Mailchimp does not necessarily eliminate contact-database pricing concerns. Audience organization can have a direct financial impact.

Mailchimp also offers a 15% discount for verified nonprofits. Eligibility should be confirmed before purchasing a paid marketing subscription.

Our take: Mailchimp is a sensible alternative for organizations that prioritize campaign creation and integrations. But switching from Constant Contact solely to escape contact-based pricing may not solve the underlying problem.

Official sources: Mailchimp pricing, contact billing definitions, and nonprofit discount policy.

If your business sells products online, Klaviyo deserves serious consideration.

The platform is built around customer behavior, including browsing activity, purchase history, product interactions, and revenue attribution. Its integration ecosystem is particularly relevant to e-commerce businesses using platforms such as Shopify and WooCommerce.

Klaviyo's Free email plan supports up to 250 active profiles and 500 monthly email sends. Paid pricing scales according to active profiles and sending requirements.

The billing definition matters. Klaviyo does not simply bill on every profile ever stored in the database. Its email/profile allowance is based on active, reachable profiles. Suppressed email profiles are excluded from the active-profile count.

However, an active profile may still be billable even if the company rarely sends that person email. Large, active customer databases can therefore produce significant costs.

Klaviyo also provides predictive analytics, segmentation, and AI-assisted capabilities. Some advanced data products, service tools, SMS functionality, and AI usage may involve separate charges.

Our take: Klaviyo is worth the investment when e-commerce behavior drives the marketing strategy. For a nonprofit sending newsletters and organizing events, its specialized capabilities may provide little additional value.

Official sources: Klaviyo pricing and plan entitlements.

ActiveCampaign is a logical alternative when the problem with Constant Contact is automation depth rather than cost.

Its strengths include branching workflows, conditional content, behavioral triggers, segmentation, scoring, and sophisticated campaign journeys. Those capabilities make it attractive to companies with more complex marketing processes.

However, ActiveCampaign's functionality differs substantially across editions. Starter has a five-action limit per automation. Plus expands automation capabilities, while Pro adds more advanced features such as predictive sending and attribution.

Starter and Plus each include one user seat. Additional seats can be purchased without automatically upgrading to Pro. Pro includes three users. Companies should compare additional-seat pricing against the value of moving to a higher tier.

ActiveCampaign also offers CRM-related capabilities, including sales pipelines and sales engagement, through additional products and licensing. Do not assume that every marketing subscription includes the full enhanced CRM functionality.

The platform has a 14-day free trial, rather than a permanent free plan. It also uses a credit model for certain enhanced AI capabilities.

Paid plans include 500 monthly Active Intelligence credits. Additional credits begin at $10 per month for 100 credits. Core AI functionality remains available when credits are exhausted, while enhanced actions may pause or require additional credits.

Our take: ActiveCampaign is worth investigating when Constant Contact's automation limitations are the main reason for leaving. It is less compelling if the only objective is lowering subscription costs.

Official sources: ActiveCampaign pricing, edition differences, and AI credit documentation.

Campaign Monitor has traditionally appealed to marketing teams and agencies that care about email design, brand consistency, and managing campaigns across clients.

Its drag-and-drop editor, branded templates, subscriber management, reporting, and agency capabilities remain relevant strengths.

However, Campaign Monitor now offers more than a basic email design platform. Its newer Marketing Studio includes AI-assisted email creation, branded creative assets, translation, and related marketing functionality.

The current editions are Lite, Essentials, Premier, and Enterprise. Lite includes a monthly email allowance equal to five times the subscriber-tier ceiling. Essentials and Premier offer unlimited marketing email sends under their plan terms.

Automation, AI functionality, segmentation, collaboration features, and support differ by edition. Enterprise adds custom account management and multi-brand capabilities.

Campaign Monitor also offers phone support, but it is available on Premier rather than its entry-level plans. That is an important distinction when comparing support against Constant Contact.

Campaign Monitor advertises a 10% annual discount for eligible subscriptions and a 15% discount for nonprofits. Discount eligibility and stacking should be confirmed with sales, particularly for agency and multi-team accounts.

It also supports pay-per-campaign arrangements for eligible accounts, which can be relevant to infrequent senders. Availability and feature restrictions should be confirmed before relying on that billing option.

Our take: Campaign Monitor is worth considering for design-focused marketing teams and agencies with multiple brands. Its automation and AI capabilities are more extensive than older comparisons suggest, but it is not automatically a less expensive or more fully featured Constant Contact replacement.

Official sources: Campaign Monitor pricing and support and edition comparison.

Kit is an interesting alternative for organizations whose email marketing is primarily built around publishing, newsletters, educational content, and audience relationships.

Although Kit targets creators, many of its strengths also apply to membership communities, educational organizations, publications, and smaller nonprofits.

The most notable difference is its generous Free plan. Kit supports up to 10,000 subscribers with unlimited email broadcasts, forms, landing pages, tagging, and basic audience segmentation.

However, the Free plan is focused on audience growth and publishing. Visual automations, unlimited email sequences, and other advanced features require a paid subscription.

Creator starts at $33 per month on the published annual-billing example for 1,000 subscribers. Pricing increases with subscriber count, so that entry price should not be used as a quote for 10,000 subscribers.

Kit also supports digital products, paid subscriptions, creator-focused monetization, and audience recommendations. Eligible paid customers may receive migration assistance, depending on the scope and account.

Our take: Kit is a compelling option when Constant Contact is primarily being used to distribute newsletters, publish content, and grow an audience. Its free subscriber allowance can be attractive, but businesses needing complex automation should compare paid plans.

Official sources: Kit pricing and Kit Free plan entitlements.