Sequenzy vs Mailchimp for Startups: Costs at Real List Sizes (2026)
Sequenzy vs Mailchimp for startup email: free plans, entry prices, what each costs at 250 to 15,000 contacts, and which fits SaaS billing emails.
For a SaaS startup that bills customers through Stripe, Paddle or Lemon Squeezy and wants to email people about trials, renewals and failed card payments, Sequenzy is the better pick. Its free plan covers 2,500 emails a month with unlimited contacts, and the first paid plan is $19 a month for 15,000 emails. The reason is how it charges: Sequenzy prices by emails sent, not by contacts stored. A 10,000-contact list that receives four emails a month, or 40,000 sends, fits the 60,000-email plan at $49 a month. On Mailchimp, the same 10,000 contacts fall into a tier priced at $135 a month.
Mailchimp is the better pick for a different kind of startup. It suits a team that mostly sends a newsletter, depends on a wide set of marketing tools, or keeps a list small enough that the free plan of 250 contacts and 500 sends a month covers the whole job. A pre-launch team with a few hundred people on a waitlist, sending one announcement and a short welcome sequence, may never need to pay. If billing events drive most of your emails, the comparison favours Sequenzy. If your emails are mostly campaigns to a general audience, the choice is much closer.
All prices are in US dollars, taken from each vendor's public pricing page and checked on 7 October 2026. Where a figure is only given monthly, this page says so. Where a tier's price is not published, the text says pricing on request, and no price is estimated.
The short comparison
The table below gives the short version. Treat it as a starting point, because the right choice depends on how many emails you send each month, not only on how many contacts you hold.
| Tool | Best for | Entry price (plan and billing) | Free plan | Key limitation |
|---|---|---|---|---|
| Sequenzy | SaaS teams sending billing, trial and renewal emails | $19/mo for 15,000 emails, monthly billing; $205 a year on the same plan | 2,500 emails a month, with unlimited contacts and sending domains | A shorter integration list than Mailchimp's, and built around product and payment events more than general campaign work |
| Mailchimp | Newsletter senders and marketing teams that use many outside tools | $13/mo for the Essentials tier at 500 contacts, monthly billing; Standard from $20/mo at the 500-contact selector | 250 contacts and 500 sends a month, with a maximum of 250 sends a day | The price rises with contact count (the 5,001 to 10,000 contact tier is $135/mo), and transactional email runs through Mandrill, which is billed separately |
The main difference is the unit each tool charges for. Sequenzy charges for sends, so a large contact list that is emailed rarely costs little more than a small one. Mailchimp charges for contacts, with a send allowance attached to each tier, so the bill moves with the size of the list even when the sending pattern stays the same. Which unit is cheaper depends on your own cadence, and the next section works through that.
What each tool costs at real list sizes
To compare the two fairly, the table below assumes a sending pattern: each contact receives four emails a month, except the first row, which uses two sends, and the 15,000-contact row with eight sends, which shows a heavier cadence. Change the cadence and the Sequenzy column moves with it. The Mailchimp column moves only when you cross a contact tier.
| Scenario | Emails per month | Sequenzy (plan and price) | Mailchimp (tier and price) |
|---|---|---|---|
| 250 contacts, 2 sends each | 500 | Free plan, $0 (2,500 emails a month) | Free plan, $0 (250 contacts and 500 sends a month) |
| 500 contacts, 4 sends each | 2,000 | Free plan, $0 (under 2,500 emails) | Essentials at 500 contacts, $13/mo (monthly billing) |
| 2,000 contacts, 4 sends each | 8,000 | 15k plan, $19/mo ($205 a year) | Pricing on request for the 1,501 to 2,500 contact range |
| 5,000 contacts, 4 sends each | 20,000 | 30k plan, $29/mo ($313 a year) | Contacts 2,501 to 5,000, $100/mo (up to 60,000 emails) |
| 10,000 contacts, 4 sends each | 40,000 | 60k plan, $49/mo ($529 a year) | Contacts 5,001 to 10,000, $135/mo (up to 120,000 emails) |
| 15,000 contacts, 4 sends each | 60,000 | 60k plan, $49/mo ($529 a year) | Contacts 10,001 to 15,000, $230/mo (up to 180,000 emails) |
| 15,000 contacts, 8 sends each | 120,000 | 120k plan, $99/mo ($1,069 a year) | Contacts 10,001 to 15,000, $230/mo (up to 180,000 emails) |
Three things stand out. First, both free plans cover very small operations, but they limit different things. Mailchimp's free plan caps contacts and sends, so a startup with 400 contacts is already over its 250-contact limit. Sequenzy's free plan caps only emails, so the same startup sending three messages a month to 400 people, or 1,200 emails, sits well inside its 2,500-email allowance.
Second, the gap widens as the list grows, because Mailchimp's contact tiers climb faster than Sequenzy's email tiers in this sending pattern. At 10,000 contacts the difference is $86 a month, which is $135 on Mailchimp against $49 on Sequenzy. Third, Sequenzy's yearly prices are below twelve monthly payments. The 15k plan is $205 a year, compared with $228 at the monthly rate (12 × $19), and the 60k plan is $529 a year, compared with $588 at the monthly rate (12 × $49). The Mailchimp figures in this table are monthly, and this comparison does not list yearly Mailchimp prices.
The table has gaps on the Mailchimp side. The pricing page lists no price for the 1,501 to 2,500 contact range, and no price is published for the tiers above 15,000 contacts. Ask Mailchimp for a quote before you plan a budget at those sizes. Do not assume that the pattern in the table continues beyond 15,000 contacts.
Sequenzy for startups
What it does well for this audience
Sequenzy is built around product and billing events rather than only around a campaign calendar. Its documentation describes connecting Stripe or PostHog once, or sending your own events with a single POST request. Each event starts a flow for a segment built from plan, monthly recurring revenue and engagement information. For a SaaS team, that means a trial ending, a plan being upgraded or a subscription renewing can each start the right sequence, without someone building a new campaign by hand for every case.
Its payment-event handling is the most specific part of the product for this audience. The documented saas.payment_failed event includes a hostedInvoiceUrl, which is a hosted invoice page where the customer can pay or update a card. A failed-payment email can therefore send the customer straight to the place where the problem is fixed, rather than to a generic login page. Sequenzy does not publish recovery rates for this flow, so this comparison makes no claim about how many customers it wins back.
Transactional and marketing email sit on one platform, with one API and one dashboard. Password resets, receipts and product notices can sit next to onboarding and renewal sequences, under the same sender setup. Revenue attribution and goal tracking are listed as included on its plans, which helps a founder see which sequences connect to paid conversions. The product also offers AI-generated sequence and campaign drafts, a visual automation builder, and API, MCP server and CLI access for teams that prefer to script their setup.
Where it falls short
Sequenzy's integration list is shorter than Mailchimp's. It covers the payment and developer tools that SaaS teams use most, including Stripe, Paddle, Lemon Squeezy, Polar, Creem, Dodo Payments, PostHog, Better Auth, Clerk, Supabase, GitHub, Zapier, n8n and custom webhooks, along with Shopify, WooCommerce and WordPress. If your stack depends on a long list of general marketing tools, confirm that each one is supported before you commit.
It is also not designed as a general newsletter platform. A publisher or local business that mainly sends a monthly newsletter to a broad audience will probably find Mailchimp's wider range of marketing tools more useful. Sequenzy's strengths show most clearly when emails are triggered by what customers do in the product or in billing.
The free plan has a firm ceiling. Once a month's sends pass 2,500 emails, you move to a paid plan, so a startup with a growing newsletter and a product email flow should check its monthly send count before assuming the free plan will last. SMS is a separate add-on, not part of the base plans.
Price
The free plan includes 2,500 emails a month, with unlimited contacts and sending domains. Paid monthly plans are priced by emails sent: $19 a month for 15,000 emails ($205 a year), $29 a month for 30,000 emails ($313 a year), $49 a month for 60,000 emails ($529 a year) and $99 a month for 120,000 emails ($1,069 a year). An SMS and MMS add-on is listed at $16 a month for 1,000 credits. Check the Sequenzy pricing page for current terms before you subscribe.
Mailchimp for startups
What it does well for this audience
Mailchimp's main strength is breadth. Its third-party integration directory is wide, which makes it a sensible choice for a team that uses many outside tools and wants to avoid building connections by hand. Most marketers already know the interface, so onboarding a new team member is usually simpler than with a newer product.
Its free plan is generous for a very small list. It covers up to 250 contacts and 500 sends a month, with a maximum of 250 sends a day. For a pre-launch startup with a few hundred people on a waitlist, that can be enough to run a launch announcement and a short welcome sequence without paying. The pricing page also shows a 14-day Standard trial, so a team that wants to test paid features before subscribing has a clear route.
Where it falls short
Mailchimp's price follows the size of your contact list. The cost of a healthy, growing list therefore rises quickly. The 5,001 to 10,000 contact tier is $135 a month and the 10,001 to 15,000 tier is $230 a month, before you consider how many emails you send. A startup that stores many contacts but emails them rarely pays for those contacts in a way Sequenzy's email-based pricing does not require.
Transactional email is handled by Mandrill, a separate product with its own pricing. If you want receipts, password resets and product notices sent from the same place as your marketing email, you will manage two products and two bills. The Mailchimp pages used for this comparison do not describe billing-event triggers, so check that capability directly before choosing Mailchimp for subscription flows.
Price
The free plan covers 250 contacts and 500 sends a month. The Essentials tier for 500 contacts is $13 a month on monthly billing. The Standard tier starts at $20 a month for the default 500-contact selector, with up to 6,000 emails a month at that size. Above 500 contacts, the tiers in this comparison are $100 a month for 2,501 to 5,000 contacts (up to 60,000 emails), $135 a month for 5,001 to 10,000 contacts (up to 120,000 emails) and $230 a month for 10,001 to 15,000 contacts (up to 180,000 emails). Check the Mailchimp pricing page for current terms before you subscribe.
About Mandrill
Mandrill is the transactional sending product that sits alongside Mailchimp. New transactional users can send up to 500 free emails to a verified domain. After that, sending is priced in monthly blocks of 25,000 emails. The first 20 blocks are listed at $20 per block per month, and the per-block price falls at higher volumes. A team that sends a few hundred receipts a month may stay within the free allowance, but a team sending tens of thousands of product emails should compare Mandrill's block pricing with Sequenzy's single-plan model before deciding.
Billing and failed-payment emails
Most SaaS startups send their most valuable email after a billing event: a trial is about to end, a card has been declined, a plan has been upgraded or a renewal is coming up. These messages often decide whether a customer stays, so where the trigger comes from matters more than the size of the list.
With Sequenzy, the trigger starts with the billing or product event. Connecting a payment provider such as Stripe, Paddle or Lemon Squeezy supplies the event data the platform needs. The failed-payment event carries a link to the hosted invoice page, so the message can point the customer to the exact place where the problem gets fixed. A founder can then build a short sequence around that event: a clear notice, a reminder a few days later and a final message before access changes. Each step can be checked in the visual builder before it goes live.
With Mailchimp, a comparable flow depends more on how you connect your billing system and structure your audiences. The pages used for this comparison do not describe a billing-event trigger, so a team that wants that behaviour should test it with its own provider before relying on it. A team that already runs its billing logic in its own code may be comfortable building that connection. A team that wants to avoid building that logic will find the event-first approach of Sequenzy the more direct route.
Whichever tool you choose, plan the sequence before you choose the tool. The sequence is the part that keeps customers, and the platform only carries it out.
Decision table: which tool for which situation
Find the row that matches your situation, then check the numbers in the cost table before you decide.
| If you need | Pick | Because |
|---|---|---|
| Emails tied to subscriptions in Stripe, Paddle or Lemon Squeezy | Sequenzy | Billing and product events can start flows, and the failed-payment event includes a hosted invoice link |
| A newsletter under 250 contacts and 500 sends a month | Either (both free) | Both free plans cover this size; choose the editor you find easier |
| A large contact list that receives only a few emails a month | Sequenzy | Pricing follows emails sent with contacts unlimited, so stored but inactive contacts do not raise the bill |
| A small list with a heavy sending schedule | Compare totals | Sequenzy's price follows send volume and Mailchimp's follows contact tier, so run both totals for your cadence |
| Transactional and marketing email under one bill | Sequenzy | One platform, one API and one dashboard; Mailchimp sends transactional email through Mandrill, priced separately |
| The widest choice of third-party marketing integrations | Mailchimp | Its integration directory is broader than Sequenzy's list |
| A product-led flow with SMS alongside email | Sequenzy, if the add-on fits | The SMS and MMS add-on is $16 a month for 1,000 credits; check Mailchimp's SMS options directly before deciding |
How to choose
Start with the number that drives your bill. For Sequenzy, that is emails sent each month. For Mailchimp, it is the number of contacts, with its send allowance attached to each tier. Write down both numbers for the next six months, not just for today, because your plan has to fit the size you are moving toward.
- Count emails, not just contacts. Multiply your list size by the number of emails each person receives in a typical month. That product is the figure to set against Sequenzy's plan sizes. Then find the Mailchimp tier that matches your list size.
- Map your billing provider. If you bill through Stripe, Paddle or Lemon Squeezy, and your emails depend on subscription events, favour the tool that starts flows from those events without custom code.
- Decide where transactional email lives. If receipts and product notices should sit in the same tool and on the same bill, Sequenzy's single platform is the simpler choice. If you already run Mandrill for product email, include it when you compare totals.
- Check your integration needs. List every tool that must connect to your email platform. If most of them are on Sequenzy's list, the narrower directory will not matter. If several are missing, Mailchimp's wider directory may save you time.
- Start on the free plan. Both free plans let you build a real sequence before you pay. Use a small segment, such as founding members or a beta group, to set up the flow and check how it reads on a phone.
Setup and migration checklist
Whichever tool you choose, a move is easier when you prepare before you import. The steps below apply to both tools and suit a startup moving off a spreadsheet, an older newsletter tool or a previous email service.
| Step | What to do | Why it matters |
|---|---|---|
| 1. Export contacts and suppressions | Export the active list together with the unsubscribe and bounce records | A suppressed address must not be imported as if it were active |
| 2. Clean the list | Remove duplicates and obviously invalid addresses | Fewer contacts lowers a Mailchimp bill, and a cleaner list means fewer bounces on either platform |
| 3. Set up the sending domain | Add the authentication records each platform asks for, then send a test to an internal group | Confirms that the message renders correctly and that the domain is ready before real sends |
| 4. Connect billing | On Sequenzy, connect Stripe, Paddle or Lemon Squeezy. On Mailchimp, set up the integration you need and map the fields you will segment on | Event-driven sequences need the billing events before they can start |
| 5. Write lifecycle sequences first | Draft the trial, onboarding, renewal and failed-payment messages before any broadcast | A clear set of flows is the most useful thing a startup can have in place early |
| 6. Build the failed-payment flow | Link the customer to the hosted invoice page or your own billing page, keep the message short, and set an end point | Customers who have already fixed the problem should stop receiving the sequence |
| 7. Run both systems briefly | Keep the old list running beside the new flows for a short period, then retire it once nothing has been missed | A parallel run catches gaps in suppression, segments and send timing |
Frequently asked questions
Is Sequenzy free to start?
Yes. The free plan includes 2,500 emails a month, with unlimited contacts and sending domains. The first paid plan is $19 a month for 15,000 emails, or $205 a year on the same plan.
Does Mailchimp's free plan work for a startup?
It works for a very small list. The free plan covers up to 250 contacts and 500 sends a month, with a maximum of 250 sends a day. Once your list passes 250 contacts, you need a paid tier. The Essentials tier for 500 contacts starts at $13 a month on monthly billing.
Which is cheaper for 10,000 contacts?
It depends on how often you send. If each contact receives four emails a month, Sequenzy's 60,000-email plan at $49 a month covers 40,000 sends. Mailchimp's tier for 5,001 to 10,000 contacts is $135 a month. If you send far more often to the same list, the Sequenzy price moves up a plan, so run the numbers for your own cadence before you decide.
Can Sequenzy send emails when a payment fails?
Yes. The documented saas.payment_failed event includes a hostedInvoiceUrl, which links to a hosted invoice page where the customer can pay or update a card. You can build a failed-payment sequence around that event. Sequenzy does not publish recovery rates for this flow, so this comparison claims no recovery figure.
Do I need Mandrill if I use Mailchimp?
Only if you want to send transactional email, such as receipts, password resets or product notices, through Mandrill. It is a separate product with its own pricing. New transactional users can send up to 500 free emails to a verified domain. After that, Mandrill is priced in monthly blocks of 25,000 emails.
Does Mailchimp have a free trial?
The Mailchimp pricing page shows a 14-day Standard trial, along with a free-month Premium offer. The Sequenzy pricing page does not list a free trial, but it does offer a free plan with 2,500 emails a month.
Are the prices monthly or yearly?
Each price states its billing view. Sequenzy's plans are shown monthly, with yearly prices given where the pricing page lists them. Mailchimp's tiers are shown monthly, because yearly figures for those tiers are not part of this comparison. All prices are in US dollars and were checked on 7 October 2026.
Can I move from Mailchimp to Sequenzy later?
Yes, but plan the move. Export your contacts and suppression list first, keep unsubscribes and bounces with their records, and run the new sequences beside the old ones for a short period. The migration checklist above covers the main steps. Check each platform's current import rules before you start, because they can change.