Best Email Platforms for Startup Waitlists in 2026
A waitlist should set expectations, keep consent clear and make access rules easy to explain. Here is how the platforms compare at the list sizes startups actually reach.
For most pre-launch waitlists under 10,000 people, Kit is the best starting pick. Its free plan covers up to 10,000 subscribers and includes unlimited email broadcasts, landing pages, signup forms and audience tagging, so a founder can collect signups and send launch updates for $0 a month. The moment the list needs automated sequences, the budget changes: Creator costs $33 a month billed annually.
A waitlist makes three promises. You will write at a stated cadence, access will follow stated rules, and the person will stop receiving waitlist mail once they become a user. Choosing a platform is mostly a question of which of those promises the tool can keep. Consent capture, position data, referral attribution, cohort membership, suppression after activation and separate invitation notices matter more than the size of the template library.
This guide compares nine platforms, prices them at three list sizes of 250, 2,500 and 10,000 contacts, and closes with a setup checklist you can work through before the first invitation goes out. Where a platform does not publish a price for a given list size, the table says so rather than guessing.
| Platform | Best for | Starting price and billing | Key limitation |
|---|---|---|---|
| Kit | Pre-launch lists under 10,000 that mostly need broadcast updates | Free up to 10,000 subscribers; Creator is $33/month billed annually | Visual Automations and email sequences start on Creator |
| MailerLite | Small teams that own a landing page, a short promise and a few updates | Free for up to 250 subscribers and 2,500 emails/month; Comfort is $12/month billed monthly or $10.80/month billed annually | The free ceiling is 250 subscribers |
| Sender | Waitlists of a few thousand people that receive a monthly update | Free Forever for 2,500 subscribers and 15,000 emails/month; Standard is $6.30/month | Published paid tiers are listed at 500 subscribers |
| Brevo | Budget-conscious waitlists that keep invitation notices on their own stream | Free for up to 100,000 contacts with 300 sends a day; Starter is $9/month | Free sending is capped at 300 emails a day |
| Loops | Product-led waitlists with a short set of lifecycle messages | Early Stage is free for up to 4,000 sends in any rolling 30 days; Growing Audience is $99/month | The free plan sends only to the 1,000 newest contacts |
| Customer.io | Waitlists whose messages depend on what people do in the product | Essentials at 10,000 profiles is $145/month billed monthly | No ongoing free plan; the Startup Program is for eligible companies |
| Mailchimp | Familiar announcements to a small launch list | Free for up to 250 contacts and 500 sends/month; Standard starts at $20/month | The bill steps up at each contact band |
| GetResponse | Waitlists tied to webinars or a scheduled launch series | Starter is $19/month billed monthly or $15.58/month billed annually | No ongoing free plan; free trial only |
| Resend | Developer-owned invitation and access emails | Free for 3,000 emails/month; Pro is $20/month for 50,000 emails | Marketing Free covers 1,000 contacts and 3 segments |
What a waitlist costs at three list sizes
Cost depends on two numbers: how many contacts you hold and how many emails each send produces. A list of 2,500 people that receives two updates a month generates 5,000 emails, and that is the figure most volume-priced plans charge against. The table uses 250, 2,500 and 10,000 contacts with the plan named in each cell, so a free plan and a paid plan can be compared directly.
Some platforms price by contact band and others by monthly email volume. Where a vendor does not publish a figure for a particular size, the cell reads pricing on request. Those gaps are worth closing before you commit, because a list that crosses a band can change the monthly bill sharply.
| Platform | 250 contacts | 2,500 contacts | 10,000 contacts |
|---|---|---|---|
| Kit | $0 on the free plan, including broadcasts, forms and landing pages | $0 on the free plan for broadcasts; sequences need Creator at $33/month billed annually (12 × $33 = $396 a year) | $0 on the free plan (still within the 10,000-subscriber ceiling); sequences need Creator |
| MailerLite | $0 on Free (up to 250 subscribers and 2,500 emails/month) | Pricing on request for 2,500 subscribers; the Comfort starting tier is listed at 500 subscribers | Pricing on request |
| Sender | $0 on Free Forever (2,500 subscribers and 15,000 emails/month) | $0 on Free Forever for two sends a month (2 × 2,500 = 5,000 emails) | Pricing on request; the paid tiers are listed at 500 subscribers |
| Brevo | $0 on Free (300 sends a day, up to 100,000 contacts) | $0 on Free as long as no single day goes above 300 sends | Starter from $9/month (it starts at 5,000 emails a month and has no daily limit); a 10,000-contact send goes beyond the free daily cap |
| Loops | $0 on Early Stage (up to 4,000 sends in any rolling 30 days) | $99/month on Growing Audience if every contact must receive sends, because the free plan reaches only the 1,000 newest contacts | $99/month on Growing Audience (unlimited sends to subscribers) |
| Customer.io | Pricing on request; no free plan, but eligible early-stage companies can receive 12 months free | Pricing on request | $145/month for Essentials at 10,000 profiles, billed monthly |
| Mailchimp | $0 on Free (up to 250 contacts and 500 sends/month) | Pricing on request | $135/month in the 5,001–10,000 contact band (up to 120,000 emails/month) |
| GetResponse | From $19/month on Starter billed monthly; the price for this list size is pricing on request | Pricing on request | Pricing on request |
| Resend | $0 on Marketing Free (up to 1,000 contacts and unlimited broadcast sending) | Pricing on request; Marketing Free stops at 1,000 contacts | $80/month on Pro marketing at 10,000 contacts |
Platform by platform
Each entry below covers what the platform does well for a waitlist, where it falls short, the published price and the link to its pricing page. The order follows the comparison table, not a ranking.
1. Kit
Kit fits a waitlist that starts as an audience: people who want a course, a newsletter or a product announcement. The landing page, signup form and tags sit in one place, so a founder can record which launch interest each person picked and send updates to that group only. For a pre-launch list that gets a broadcast every couple of weeks, the free plan covers most of the work without a monthly bill.
Visual Automations and email sequences do not appear on the free plan, so a welcome series for each new signup means paying for Creator. Kit models audiences and content rather than product events, which means a request for account activation inside your application needs a separate route into the list.
Price: Free for up to 10,000 subscribers, with unlimited email broadcasts. Creator is $33/month billed annually ($396 a year) and adds sequences and A/B testing of subject lines. Pro is $66/month billed annually.
2. MailerLite
MailerLite suits a small team that owns the landing page, the promise and the handful of updates that follow. The Free plan allows up to 250 subscribers and 2,500 emails a month, which is enough for a first waitlist of a few hundred people and leaves room for launch announcements. The editor is simple enough that a founder can build the whole flow in an afternoon.
The free ceiling is 250 subscribers, so a list that grows past it moves to a paid plan quickly. Referral ranking and cohort-based access are not described on its plans, so a team that needs those should build them and test them before launch rather than assume the platform handles them.
Price: Free for up to 250 subscribers and 2,500 emails a month. Comfort is $12/month billed monthly or $10.80/month billed annually and is listed on the 500-subscriber starting tier. Power is $25/month billed monthly or $22.50/month billed annually with unlimited monthly emails on the same starting tier.
3. Sender
Sender is a practical free option when the waitlist holds a few thousand people and the team sends one or two updates a month. Free Forever covers 2,500 subscribers and 15,000 emails a month, so two sends to a full list of 2,500 fit inside the free allowance.
Sender’s paid tiers are published for 500 subscribers, so a list above that size needs the subscriber selector on the pricing page. Its price depends on both the subscriber count and the email volume, which means list growth changes the bill as well as sending frequency.
Price: Free Forever covers 2,500 subscribers and 15,000 emails a month. Standard is $6.30/month for 6,000 emails and 500 subscribers. Professional is $10.50/month for 12,000 emails and 500 subscribers.
4. Brevo
Brevo works for a founder who wants invitation confirmations and access notices kept apart from newsletter sends. Its free plan stores up to 100,000 contacts, so storage is not the constraint on a waitlist. Paid plans remove the daily sending cap, which matters once a launch day produces a burst of messages.
The free plan caps sending at 300 emails a day. A waitlist of 10,000 people that receives one full send a month cannot go out on the free plan in a single day, so the send has to be spread or the plan has to change. Plan for a paid tier before a single send approaches the daily cap.
Price: Free includes 300 daily sends and up to 100,000 contacts. Starter is $9/month and starts at 5,000 emails a month with no daily sending limit. Standard is $18/month and adds automation, A/B testing and advanced reports. Professional, the 150,000-send tier, is $499/month on the monthly view.
5. Loops
Loops is built for product-led startups that want a short, readable set of lifecycle messages. The Early Stage plan includes all features and up to 4,000 sends in any rolling 30 days, so a waitlist with a welcome email, a progress update and an invitation can run on it while the list is small. It also allows up to 10 emails per second, which helps when invitations go out in batches.
The free plan sends only to the 1,000 newest contacts and adds a Loops footer to emails. Once the waitlist grows, the Growing Audience plan at $99/month becomes the real cost. Transactional sends to people outside your audience are part of the paid plan, so invitations and marketing mail can end up on the same bill.
Price: Early Stage is free for up to 4,000 sends in any rolling 30 days. Growing Audience is $99/month and includes unlimited sends to subscribers and transactional sends to users outside the audience.
6. Customer.io
Customer.io suits a waitlist whose messages change after a person refers a friend, finishes setup or goes quiet. The visual workflow builder makes those branches readable, and profile events sent from the application let the path adjust without manual exports. Eligible early-stage companies that have raised under $10M can receive 12 months free through its Startup Program.
There is no ongoing free plan, and the published Essentials profile tiers begin at 10,000 profiles, so a small waitlist may not match a published price. Its strength depends on the application sending clean events, which means a developer has to build and maintain that feed.
Price: Essentials is listed at $100/month as a base tier. Essentials at 10,000 profiles is $145/month billed monthly; 20,000 profiles is $235/month; 30,000 profiles is $325/month; 40,000 profiles is $415/month; 50,000 profiles and above starts at $505/month. Premium uses custom profile volume pricing.
7. Mailchimp
Mailchimp is familiar to most non-specialists, so a launch team can run the content calendar without training. The free plan covers up to 250 contacts and 500 sends a month, with a limit of 250 sends in a single day, which is enough for a short pre-launch list with occasional updates.
The free plan stops at 250 contacts. Paid plans price by contact band, so the bill jumps at each band, and behavioral triggers are not the core of the product. A waitlist whose messages depend on product events will need a second tool.
Price: Free covers up to 250 contacts and 500 sends a month. Standard starts at $20/month on the 500-contact selector for up to 6,000 emails. The 5,001–10,000 contact band is $135/month for up to 120,000 emails.
8. GetResponse
GetResponse belongs on a shortlist when the waitlist is paired with a webinar, a launch event or a scheduled education series. The event calendar is part of the workflow, and the landing pages and signup forms sit beside it. Starter includes unlimited monthly sends, a welcome series and one automation workflow, which is enough for a simple welcome path.
No ongoing free plan is listed, only a free trial. Unlimited workflows and advanced audience segmentation are on Marketer, so a waitlist with several paths moves up a tier. Webinar and course features are wasted on a plain update list.
Price: Starter is $19/month billed monthly or $15.58/month billed annually. Marketer is $59/month billed monthly or $48.38/month billed annually. Creator is $69/month billed monthly or $56.58/month billed annually and includes webinars.
9. Resend
Resend is for the message that grants access: an invitation, a login link or an account confirmation. The free plan includes 3,000 emails a month and 100 a day across 3 domains, so the access path can run without a bill while the waitlist is small. The marketing tab adds a free tier for 1,000 contacts with unlimited broadcast sending.
The product is built around an API, and the marketing free tier allows only 3 segments. Campaign design and editorial tooling are less central than the sending infrastructure, so it works best next to a newsletter tool rather than in place of one.
Price: Free includes 3,000 emails a month. Pro is $20/month for 50,000 emails. Marketing Free covers 1,000 contacts. Pro marketing is $40/month at 5,000 contacts, $80/month at 10,000 contacts and $180/month at 25,000 contacts.
How to choose
Start with the list you will have at launch, not the list you hope to have six months later. A waitlist of a few hundred people almost always fits a free plan, and the decision then depends on what each message has to do. A broadcast that announces a date is one job. A sequence that reacts to a signup, a referral or an activation is another. Once the second job is required, the plan price changes, so make that trade-off before the first subscriber arrives rather than after.
Next, separate the messages that persuade from the messages that grant access. A launch update can wait a day if it is late. An invitation cannot, because the person is waiting at a login screen. If your product depends on a login link, a confirmation or a seat assignment, send those through a transactional tool and keep the marketing list on a platform built for updates. That split is why several of the cheaper options pair well: Kit or MailerLite for the list, and Resend or Postmark for the notice that opens the product.
Finally, decide what counts as activation. Many startups measure a waitlist by signups, but the useful signal is the moment a person becomes a user. If that event lives in your application, choose a tool that can receive it. Customer.io and Loops are built around events and behavior. Kit and MailerLite are simpler and rely on tags, forms and exports. Both approaches can work. The usual mistake is choosing the simple tool and then expecting it to stop messages automatically when access is granted.
Pick by the job, not the brand
The decision table maps common waitlist needs to the platform that handles each one most directly. Every row names the reason from the published plan, so you can check it against your own requirements before you sign up.
| If you need | Pick | Because |
|---|---|---|
| A free plan for broadcast updates under 10,000 people | Kit | The free plan includes unlimited email broadcasts, landing pages, forms and audience tagging up to 10,000 subscribers |
| A welcome sequence for every new signup | Kit on Creator | Kit starts sequences on Creator at $33/month billed annually, while its free plan covers broadcasts, forms and landing pages for up to 10,000 subscribers |
| Messages triggered by what people do in the product | Customer.io or Loops | Customer.io is built around profile events and a visual workflow builder; Loops keeps a narrow lifecycle model with unlimited sends to subscribers on Growing Audience at $99/month |
| Webinars and a scheduled launch series | GetResponse | Its Creator plan includes webinars, and Starter includes landing pages, signup forms and one automation workflow |
| Invitation and access emails that must arrive on time | Resend or Postmark | Both are built for transactional sending; Resend’s free plan includes 3,000 emails a month and Postmark’s free plan includes 100, with Basic starting at 10,000 emails a month at $15 |
| A simple waitlist under 250 people | MailerLite Free | The free plan covers up to 250 subscribers and 2,500 emails a month with no paid step until the list grows |
Setup and migration checklist
Set up the waitlist before the first invitation, whatever platform you choose. Problems reported after launch usually trace back to a missing field, a segment nobody owns, or an exit rule that was never tested. The checklist covers the steps that matter most for a waitlist that will later turn into access.
| Step | Set this up | Why it matters |
|---|---|---|
| Signup wording | Write a signup line that names what the list receives and how often | The subscriber agreed to a specific cadence, which makes later complaints easier to answer |
| Source and date fields | Store signup date, referral source and launch interest as contact fields | A subscriber who asks where they stand gets an answer from the record instead of a guess |
| Eligibility segment | Create one tag or segment for the launch cohort and name its owner | A single source of truth decides who receives each invitation |
| Exit rule | Remove activated accounts from waitlist automations as soon as the product event arrives | Launch promises stop reaching people who already have access |
| Sending streams | Send invitations and account notices from a separate sending domain or stream from the newsletter | A deliverability problem with updates should not block access emails |
| Volume check | Count contacts and sends per month before choosing a plan | Plans change at contact or volume bands, so a modest growth in the list can change the bill |
If you are moving an existing list, export it with its signup dates, sources and consent records before importing it anywhere. Bring the consent fields across as they were captured, rather than converting them into a blanket opt-in, and keep the original export until the first send has been reconciled against it. Suppression lists come first. The most common way to email people who already unsubscribed is a mid-launch migration that forgot the unsubscribe history.
After the import, send a small test to a handful of internal addresses and to one contact from each source, then check that the launch tag matches the people you intended. Only then open the cohort to the full list.
Verdict
Kit is the starting pick for a broadcast-led waitlist under 10,000 people at $0, with Creator at $33/month billed annually once sequences are needed. MailerLite is the simplest choice for a list of a few hundred. Loops and Customer.io suit waitlists driven by product events. Choose the platform that can enforce your eligibility and exit rules, then test those rules before the first invitation.
Turn the waitlist into onboarding
Once access is granted, the next question is what a new user should receive. The onboarding guide covers that stage.
Read the onboarding guideFrequently asked questions
Which email platform should a pre-launch startup pick first?
For a list under 10,000 people that mostly needs broadcast updates, Kit is the strongest starting point. Its free plan includes unlimited email broadcasts, landing pages, forms and tagging for up to 10,000 subscribers. Move to Creator at $33/month billed annually when you need automated sequences.
What does a 2,500-person waitlist cost to email?
It depends on how many sends you make. Sender’s Free Forever plan covers 2,500 subscribers and 15,000 emails a month, so two sends to the full list fit there at $0. A list that grows beyond the free subscriber ceiling needs the paid-tier selector before launch.
Can a free plan run a waitlist with a welcome sequence?
Not on every platform. Kit’s sequences start on Creator, so a welcome series there requires a paid plan. Loops’ Early Stage plan includes all features but reaches only the 1,000 newest contacts, so check the send rules before you promise a welcome path to the full list.
Should invitation emails go through the same tool as the newsletter?
Keep them separate where you can. Access notices are time-sensitive and tied to one account, so they need reliable delivery and their own sending domain. Resend’s free plan includes 3,000 emails a month. Postmark’s free plan includes 100 emails a month, and its Basic plan starts at 10,000 emails a month at $15.
Can Brevo handle a launch-day burst from a large waitlist?
Brevo's free plan stores up to 100,000 contacts but caps sending at 300 emails a day. A large invitation batch therefore needs a paid plan or a schedule spread across several days; Starter is $9/month and starts at 5,000 emails a month without the daily cap.
Is Customer.io worth it for a small waitlist?
Its published Essentials profile tiers start at 10,000 profiles, at $145/month billed monthly, so a list of a few hundred people does not match a published price on the pricing page. Eligible early-stage companies that have raised under $10M can receive 12 months free through its Startup Program.
How do I stop launch messages after someone gets access?
Create an exit rule tied to a product event such as account activation, and remove that contact from waitlist automations when the event arrives. Test the rule with a duplicate event and a revoked invitation before launch, so no one receives a message promising access they already have.