Automation guide · Updated October 7, 2026

Email software for marketing automation, compared on triggers, branching and price.

For most marketing teams that need multi-step automation, ActiveCampaign is the best starting point. Its Starter plan is $15 per month at 1,000 contacts, billed monthly, and it already includes marketing automation. Teams that run an online store will usually get more from Klaviyo, and teams whose triggers come from product events will usually get more from Customer.io.

By the Email Marketing Software editorial team · Prices checked October 7, 2026

What this guide covers, and what it does not

This guide is about automation: messages that a tool sends on its own after a contact does something, or after a set amount of time passes. A journey, workflow or flow is a set of messages joined by conditions. Each step can wait for a delay, check whether a contact opened an email or clicked a link, branch on a tag or property, or exit when a goal is reached. Broadcasts, the one-off newsletters and campaigns that go to a whole list at once, are a separate topic. Most tools in this list handle both, but they differ a lot in how deep the automation side goes.

Three things matter most when you compare automation. The first is the trigger source: whether the tool can start a flow from a form, a purchase, a tag, a date, an API call or an event sent from your own product. The second is branching: whether you can split a contact into paths based on behavior and properties, and whether those paths can merge back later. The third is what the price does as your list grows. Automation is usually the feature that pushes a team from a free or cheap plan to a paid tier, so the price of the plan that includes it matters more than the price of the entry plan.

This guide does not rank tools by a numeric score, and it does not try to cover every feature of every product. It covers the tools that most often show up in automation shortlists, names the plan that includes the features discussed, and gives the price from each vendor\'s public pricing page. Where a vendor does not publish a price for the contact count you need, the page says "pricing on request" rather than guessing.

Comparison at a glance

Each row gives the best-fit use case, the lowest published price that includes automation where the vendor shows one, and the main limitation to check before you buy. Prices are in US dollars.

ToolBest forStarting price (plan, billing)Key limitation
ActiveCampaignBranching journeys for sales and marketing teams$15/mo at 1,000 contacts (Starter, billed monthly)Advanced segmentation starts on Pro at $79/mo
KlaviyoOnline stores with browse, cart and purchase flows$20/mo for 500 profiles (Email plan, billed monthly)Price scales by active profile; Email and SMS pricing on request
Customer.ioProduct and app teams sending event-triggered messages$100/mo (Essentials, billed monthly)Profile-based pricing; no ongoing free plan beyond the Startup Program
DripCreators and small ecommerce brands with multi-step sequences$39/mo for 1 to 2,500 people (billed monthly)14-day trial only; no ongoing free plan
KitCreators who want a free list and automation later$0 on Free up to 10,000 subscribers; $33/mo for visual automations (Creator, billed annually)Visual automations and sequences need a paid plan
GetResponseFunnels, landing pages and webinar-led marketing$19/mo (Starter, billed monthly) with one automation workflowUnlimited workflows only from Marketer at $59/mo
BrevoTeams that send high volumes and want automation at a low priceFree for 300 sends a day; $18/mo for Standard from 5,000 emails a monthFree tier caps daily sends; automation needs Standard
MoosendSmall lists that need real workflow logic on a tight budget$9/mo at 500 contacts (billed monthly), $7/mo billed annuallyNo free plan; 30-day trial only
MailchimpSmall teams starting with prebuilt journeysFree up to 250 contacts; $20/mo Standard at the 500-contact selectorFree plan caps sends; price rises in contact tiers
MailerLiteBeginners who want a free start and low-cost growthFree up to 250 subscribers; $12/mo Comfort at 500 subscribers (billed monthly)Monthly email allowance depends on subscriber tier
LoopsDeveloper-led product email triggered by API eventsFree Early Stage plan up to 4,000 sends per rolling 30 days; $99/mo Growing AudienceFree plan shows a Loops footer and has a send cap
Constant ContactSmall businesses that want automation with phone-free support$12/mo Lite (billed monthly); $35/mo Standard includes automationNo free plan; free trial only

What automation costs at four list sizes

The table shows the published monthly price for the plan that includes automation, at four contact counts. "Pricing on request" means the vendor\'s public pricing page did not publish a price at that size, so no figure is shown.

Tool and plan1,000 contacts5,000 contacts10,000 contacts25,000 contacts
ActiveCampaign, Starter$15/mo (billed monthly)Pricing on requestPricing on requestPricing on request
Klaviyo, Email plan$30/mo (1,000 profiles)$100/mo (5,000 profiles)$150/mo (10,000 profiles)$400/mo (25,000 profiles)
Customer.io, EssentialsPricing on requestPricing on request$145/mo (10,000 profiles, billed monthly)Pricing on request
Drip, unlimited sends$39/mo (1 to 2,500 people)$89/mo (4,501 to 5,000 people)$154/mo (9,001 to 10,000 people)$369/mo (22,501 to 25,000 people)
Kit, Free with Creator option$0 on Free; Creator $33/mo billed annually for automations$0 on Free; Creator $33/mo billed annually for automations$0 on Free; Creator $33/mo billed annually for automationsPricing on request
Moosend, Pro$16/mo billed monthly; $13/mo billed annually$48/mo billed monthly; $38/mo billed annually$88/mo billed monthly; $70/mo billed annually$160/mo billed monthly; $128/mo billed annually
Mailchimp, StandardPricing on request$100/mo (2,501 to 5,000 contacts)$135/mo (5,001 to 10,000 contacts)Pricing on request

Two patterns stand out. Per-profile tools such as Klaviyo and Customer.io grow steadily with the audience, so the gap between a 5,000-contact list and a 25,000-contact list is large. Band-based tools such as Drip and Mailchimp step up at fixed points, so a list that sits just above a band boundary can cost noticeably more than one just below it. Before you choose, work out the size you will reach in twelve months, not the size you have today.

Automation-inclusive prices also differ by billing period. Moosend and Kit publish annual rates that are lower per month than their monthly rates. If you plan to stay on one tool for a year or more, compare the annual per-month figure with the monthly one on each pricing page before deciding.

Tool by tool: where each one fits

ActiveCampaign

Starter from $15/mo at 1,000 contacts (billed monthly) · Free trial, no free plan

ActiveCampaign is the most direct match for teams that need branching. Starter includes email marketing, marketing automation and standard CRM and ecommerce integrations, so a team can build a welcome sequence and a basic follow-up path without moving up a tier. Plus adds standard segmentation and landing pages. Pro adds advanced segmentation, which matters once you want to split a list by several behaviors at the same time, for example opened the last three emails and visited the pricing page but did not buy.

Where it falls short is the price of that depth. Advanced segmentation sits on Pro, which is $79 a month at 1,000 contacts, so a team that expects to use it should budget for Pro from the start rather than discovering the gap after it has built flows. Its setup is also more involved than a simple newsletter tool, and a team without one person who owns the automations can end up with flows nobody maintains. Premium segmentation and a dedicated account team are reserved for Enterprise, at $145 a month at the same contact count.

Best for: sales and marketing teams that run several journeys at once and need them to hand off to a CRM. See ActiveCampaign\'s pricing page.

Klaviyo

Email plan from $20/mo for 500 profiles (billed monthly) · Free plan for 250 profiles and 500 sends a month

Klaviyo is built around customer profiles that are updated from a store\'s purchase, browse and cart activity. For an online store, that makes flows such as abandoned-cart reminders, post-purchase follow-ups and back-in-stock alerts easier to set up than in a general tool, because the triggers already exist. The free plan covers 250 active profiles and 500 email sends a month, which is enough to test the product flows on a small store.

The limitation is that Klaviyo is priced per active profile, and it is strongest for ecommerce. A content publisher or a B2B software team will find its profile model and store-oriented triggers less natural. The Email plan rises from $30 at 1,000 profiles to $400 at 25,000, so growth changes the budget quickly. Email and SMS together are shown as pricing on request in the published record, so a team that wants both channels should ask for a quote before building flows that depend on text messages.

Best for: online stores that want commerce triggers without writing their own event integration. See Klaviyo\'s pricing page.

Customer.io

Essentials from $100/mo (billed monthly) · Eligible early-stage companies can receive 12 months free through the Startup Program

Customer.io suits teams whose most important triggers come from the product rather than from a form or a purchase. An event such as a user creating a project, inviting a teammate or stalling at the same step for three days can start a journey directly. Essentials includes the visual workflow builder, basic data integrations and email and community support, which is enough for a product team that sends behavior-based messages to a few thousand users.

The cost of that model is profile-based pricing, and it assumes someone on the team can define events cleanly. Essentials shows a monthly price for 10,000 profiles at $145, for 20,000 at $235, and for 30,000 at $325, but prices at other sizes are not published on the same page. Premium has custom profile volume and pricing with premium support and higher AI agent limits. Companies that have raised under $10 million may qualify for 12 months free through the Startup Program, so check eligibility before you commit to a paid plan.

Best for: product, growth and engineering teams that already send events from their application. See Customer.io\'s pricing page.

Drip

From $39/mo for 1 to 2,500 people (billed monthly) · 14-day free trial, no credit card

Drip is designed around workflows and segments for ecommerce brands and creators. Its lower bands include unlimited email sends, dynamic segments, onsite campaigns and up to 50 workflows, so a small store can run a full set of sequences without paying per email. Each band lists its support level, and the higher bands add chat support and free migration, which helps a team moving from another platform.

Drip has no ongoing free plan, only a 14-day trial with no credit card, so teams should build and test their core flows during the trial. Its price steps up by people band rather than smoothly, so a list just over 2,500 people moves from $39 to $49 at 2,501 to 3,000 people, and the next band is $89 at 4,501 to 5,000 people.

Best for: small ecommerce stores and creators who want multi-step sequences without per-send charges. See Drip\'s pricing page.

Kit

Free for up to 10,000 subscribers · Creator $33/mo billed annually for visual automations · 14-day trial on paid plans

Kit is the most affordable way to start for creators and newsletter operators. The free plan includes landing pages, forms, unlimited email broadcasts, tagging and segmentation for up to 10,000 subscribers, and it can sell digital products. This makes it a good place to build a list and learn which segments matter before you add automation.

The limitation is clear on the pricing page: unlimited visual automations and email sequences start on the Creator plan at $33 a month billed annually. The free plan is not a free automation tool. Pro adds subscriber signals, unlimited users and deliverability reporting, and it is aimed at larger teams. A creator who plans to use automation from the first week should price Creator in from the start.

Best for: creators and small publishers who want a free list now and automation when they need it. See Kit\'s pricing page.

GetResponse

Starter $19/mo billed monthly ($15.58 billed annually) · Marketer $59/mo billed monthly ($48.38 billed annually) · Free trial, no ongoing free plan

GetResponse combines email automation with landing pages, signup forms and sales funnels. Starter includes unlimited monthly sends, a welcome series, one automation workflow, landing pages and signup forms. That single workflow is enough to test the idea, but it is not enough for a team running several lifecycle paths at once.

Marketer is the plan that makes automation practical. It adds unlimited workflows, advanced audience segmentation, abandoned-cart recovery and sales funnels. Creator adds webinars, a website builder and a course creator, which is useful for teams that sell through live sessions. The main limitation is the step from Starter to Marketer: the workflow limit is the first thing most teams hit.

Best for: marketers who run funnels, webinars and automated follow-up in one place. See GetResponse\'s pricing page.

Brevo

Free plan for 300 sends a day, up to 100,000 contacts · Standard $18/mo from 5,000 emails a month

Brevo prices by monthly email volume rather than by contact count, which suits teams that have a large list but send to a fraction of it each month. The free plan allows up to 100,000 contacts and 300 sends a day, so a team can keep a large audience on the free tier while it tests messages. Starter starts at $9 a month for 5,000 emails and has no daily sending limit. Standard starts at $18 a month for 5,000 emails and includes automation, A/B testing and advanced reports.

The limitations are the daily cap on the free tier, which makes launch days hard to run without a paid plan, and the fact that automation is not part of the entry paid plan. A team that wants flows should budget for Standard. Professional, at $499 a month for 150,000 to 10 million sends, is a separate step for high-volume senders.

Best for: teams with large lists and modest monthly sending who want automation at a low price. See Brevo\'s pricing page.

Moosend

Pro at 500 contacts from $9/mo billed monthly, or $7/mo billed annually · 30-day free trial, no credit card

Moosend gives small lists access to workflow logic at a low entry price. Pro is priced by contact tier and includes unlimited emails for the contacts in the tier, so a team with a few hundred subscribers can build branching automations for less than the cost of most other tools in this list.

The price rises with the list. Pro is $16 a month billed monthly at 1,000 contacts and $48 at 5,000, and the annual rate is lower at each step. Moosend has no ongoing free plan, only a 30-day trial, so the first month should be used to build and test the flows that matter. Credit packs are also offered for sending volume beyond the subscription.

Best for: small businesses and solo marketers who need real workflow logic on a tight budget. See Moosend\'s pricing page.

Mailchimp

Free up to 250 contacts and 500 sends a month · Standard from $20/mo at the 500-contact selector · 14-day Standard trial

Mailchimp is a familiar starting point for small teams, and its free plan lets you build a first audience and a basic welcome message without paying. Standard adds the automation features that matter for journeys, and the price is set by contact tier. At the 500-contact selector, Standard starts at $20 a month and includes up to 6,000 emails at that tier.

The limits are the free plan\'s caps of 250 contacts and 500 sends a month, and the tier steps that follow. The 2,501 to 5,000 contact tier is $100 a month with up to 60,000 emails, and the 5,001 to 10,000 tier is $135 a month with up to 120,000 emails. Teams whose lists grow quickly should compare the tier step with a per-profile tool before committing.

Best for: small teams that want prebuilt journeys and a familiar interface. See Mailchimp\'s pricing page.

MailerLite

Free up to 250 subscribers and 2,500 emails a month · Comfort from $12/mo at 500 subscribers (billed monthly) · Power from $25/mo for unlimited monthly emails

MailerLite is a low-cost starting point for beginners. The free plan covers up to 250 subscribers and 2,500 emails a month, which is enough to run a welcome sequence and a first newsletter. Comfort starts at $12 a month at 500 subscribers, and the email allowance on that tier is ten times the subscriber ceiling. Power removes the monthly email cap for $25 a month at the starting subscriber tier.

The limitation is that the monthly email allowance depends on the subscriber tier, so a list that grows faster than its sends can hit the cap. Teams that need deep branching or many simultaneous journeys should look at ActiveCampaign or Customer.io instead of pushing MailerLite past the level it was built for.

Best for: beginners who want a free start and a predictable step up. See MailerLite\'s pricing page.

Loops

Early Stage free plan up to 4,000 sends in any rolling 30 days · Growing Audience $99/mo

Loops is built for developers and product teams that want to send email from application events through an API. Its free Early Stage plan includes all features, with up to 4,000 sends in any rolling 30 days to the 1,000 newest contacts. The paid Growing Audience plan at $99 a month adds unlimited sends to subscribers and transactional sends to users outside your audience.

The limitations are the send cap on the free plan, the Loops footer that appears on it, and the fact that it assumes a technical owner. A marketer without access to the product\'s events will find Loops harder to use than the visual builders above. Its paid plan includes transactional sends, so teams can keep product and marketing email in one tool.

Best for: developer-led product teams that send event-based messages. See Loops\'s pricing page.

Constant Contact

Lite from $12/mo billed monthly ($10.20 billed annually) · Standard $35/mo includes automation · Free trial, no credit card, no free plan

Constant Contact suits small businesses that want automation together with phone-friendly support and a simple setup. Standard adds automation, scheduling and A/B testing, and Premium adds advanced automation, segmentation and reporting along with 500 SMS messages a month. The Lite plan sends up to ten times the contact count, which can be generous for a small list.

The limitation is that there is no free plan, only a free trial with no credit card, and the automation that matters sits on Standard and above. Teams that want deep journeys with many branches will find it less flexible than ActiveCampaign or Customer.io.

Best for: small businesses that want a guided setup and automation without a steep learning curve. See Constant Contact\'s pricing page.

Other tools we considered

AWeber starts at $15 a month for 500 subscribers on its Lite plan, and Plus starts at $30 a month for the same subscriber count. Its free trial is 14 days and it has no ongoing free plan. It is a reasonable choice for autoresponder sequences, but the published tiers do not list the branching options that the tools above describe in their own pages, so it is not in the main comparison.

Campaign Monitor starts at $13 a month on Lite and $31 a month on Essentials for the 500-contact band, with annual rates of $11.70 and $27.90 a month. Its free trial is 30 days, with 500 contacts and 500 emails. It is a design-focused email tool, and the automation details on its pricing page are limited, so it is listed here rather than in the table.

Which tool to pick for your situation

Use this table to match your main need to a starting point, then check the plan and price in the tables above before signing up.

If you needStart withBecause
Branching journeys that hand off to a CRMActiveCampaign Plus or ProAutomation is in Starter, and advanced segmentation starts on Pro at $79 a month at 1,000 contacts.
Automated store flows such as abandoned cartsKlaviyo Email planStore activity is already a trigger, and the free plan covers 250 profiles for testing.
Messages triggered by product eventsCustomer.io EssentialsThe visual workflow builder runs on events from your application, starting at $100 a month.
Sequences for a small list with no per-send feesDrip, lower bandsUnlimited sends are included from $39 a month for up to 2,500 people.
A free list now and automation laterKit Free, then CreatorFree covers up to 10,000 subscribers, and visual automations start at $33 a month billed annually.
Funnels and webinars in one billGetResponse MarketerUnlimited workflows, abandoned-cart recovery and sales funnels are in one plan at $59 a month.
Large lists with modest monthly sendingBrevo StandardPricing follows monthly email volume, and automation is included from $18 a month.
Real workflow logic on a small budgetMoosend ProPro starts at $9 a month at 500 contacts, or $7 billed annually.
A free start with prebuilt journeysMailchimp free, then StandardThe free plan covers 250 contacts, and Standard starts at $20 a month at 500 contacts.
Event emails sent through an APILoopsThe free plan covers 4,000 sends in a rolling 30 days, and the API is the main interface.
Guided setup for a small businessConstant Contact StandardAutomation and A/B testing are included from $35 a month, with phone-friendly support.

How to choose

Start with your trigger source. If the trigger is a form, a tag, a purchase or a date, almost any tool in this list will work. If the trigger is a product event, a warehouse record or a custom API call, shortlist Customer.io, Loops and ActiveCampaign, which accept events from outside the email tool. Triggers that depend on data your team cannot yet send are the most common reason automations get delayed after a purchase.

Next, count the people who will be in your automations, not just on your list. Per-profile tools charge for every active profile, and band-based tools charge for every person in a band. A tool that is cheap for 1,000 contacts may cost more than the alternatives at 10,000, so use the four-size table above to model your growth.

Then look at the plan that includes automation. Several tools have a free or cheap entry plan that does not include workflows. Kit, Brevo and GetResponse all fit this pattern, so a team that expects to automate in the first month should price the automation plan, not the entry plan.

Finally, consider who will own the automations. A team with one part-time marketer should choose the tool with the simplest builder that still covers its triggers. A team with an engineer who can send events should choose the tool that accepts events cleanly. Deep branching only pays off when someone checks it regularly.

Setup and migration checklist

The steps below apply whether you are setting up automation for the first time or moving flows from another tool. Work through them in order, and do not switch live traffic until the last step is complete.

StepWhat to doDone when
1. Map your triggersList every event that should start a message, and note where each event comes from.Each trigger has a named source and an owner.
2. Check consentConfirm which contacts can receive marketing email and export the consent status with each contact.Every imported contact has a recorded consent status.
3. Export contacts and tagsExport contacts, tags and custom fields from the old tool, and check that field names map to the new tool.A sample of 50 contacts matches on fields and tags.
4. Rebuild one flow at a timeStart with the welcome sequence, then the purchase or sign-up follow-up, then re-engagement.Each flow has written conditions and exit rules.
5. Test with internal addressesRun each flow with test contacts you control, and check delays, branches and links.Every branch has been reached at least once in testing.
6. Switch traffic graduallyMove new sign-ups to the new flows first, and pause the old flows only after the new ones run cleanly.Two weeks of new sign-ups run through the new flows without errors.

For a store, the most common migration problem is a missing purchase event, which means post-purchase messages fire for contacts who already bought. Confirm that the new tool receives the order event before you turn on any purchase-based flow. For a product team, the common problem is event naming: an event called "signed_up" in one system and "user_created" in another will break a flow silently, so check the event names against the data you actually send.

Mistakes that make automation expensive

The most expensive mistake is building a large number of flows before any of them has been checked. Each flow adds contacts to a tool that charges by contact, and a flow that sends the wrong message to the wrong segment is hard to find. Start with three or four flows that map to revenue or activation, and add more only when those are working.

The second mistake is choosing a tool for its top plan and then never using the features it includes. ActiveCampaign\'s advanced segmentation is valuable only when someone uses it. If your team will run one welcome sequence, Starter or Plus may be enough, and the money saved can go toward the setup work that actually improves results.

The third mistake is ignoring the step between bands. A list that grows from 2,400 to 2,600 people on a band-based tool can change the monthly bill by a large amount. Check the band boundaries before you let a list grow past one of them, and plan the move to the next plan in advance.

Related guides

Marketing automation questions

Answers to the questions teams ask before they choose a tool.

Which email tool is best for multi-step marketing automation?

For most teams that need branching journeys, ActiveCampaign is the strongest starting point. Its Starter plan is $15 per month at 1,000 contacts, billed monthly, and it already includes marketing automation. Advanced segmentation starts on the Pro plan at $79 per month at the same contact count. If your automations depend on online store behavior, Klaviyo is usually the better fit.

Do I need an event-based tool or a standard email platform?

Use an event-based tool when your triggers come from product usage, app events or data in a warehouse, such as a user finishing setup or a feature being used for the first time. Standard platforms are enough when triggers are tags, form submissions, purchases through a connected store or dates in a contact record. Customer.io is the main example of the event-led approach in this list.

How do contact counts change the price?

Most paid plans in this list price by contacts, profiles or people. Klaviyo charges per active profile, Drip charges by people in bands, Moosend and Mailchimp use contact tiers, and ActiveCampaign quotes starting prices at 1,000 contacts. Check the size of your list and the number of contacts you expect to add in the next 12 months before choosing a plan, because the step-up between bands can be large.

Which tools have a free plan that supports automation?

Kit has a free plan for up to 10,000 subscribers, but visual automations and sequences start on the Creator plan. MailerLite and Mailchimp have free plans for small lists, and Brevo has a free daily sending tier. Loops has a free Early Stage plan with a cap of 4,000 sends in any rolling 30 days. Check each free plan's limits before building flows on it, because the automation features and sending caps differ.

What should I automate first?

Start with the messages that tie directly to revenue or activation: the welcome sequence, abandoned-cart or abandoned-checkout reminders, the first follow-up after a purchase or sign-up, and a re-engagement sequence for contacts who have stopped opening. Build these first, measure them for a month, and only then add secondary branches. A small number of working flows is easier to maintain than a large canvas nobody checks.

Should I migrate automations from another tool myself?

You can rebuild simple welcome and reminder flows by hand in an afternoon. Complex journeys with many branches and tagging rules take longer, so map every condition on paper first. Export your contacts and tags, confirm that consent status comes with them, then rebuild one flow at a time and test each one with internal addresses before switching live traffic.

Where can I confirm current prices?

Each tool links to its own pricing page in this article. Prices here are taken from those pages as checked on October 7, 2026. Vendors change plan names, limits and billing options, so confirm the price for your exact contact count on the vendor page before you sign up.