solobuild
Most email marketing comparisons are written for people who sell courses, newsletters, and digital downloads. If you run a service business, a cleaning company, a bookkeeping practice, a physical therapy clinic, a design studio, most of that advice does not transfer. Your list grows slowly, your customers already know exactly who you are, and the email you send in March is usually a reminder that it is time to book again. Constant Contact and Kit are both defensible choices for that work, but they were built on different assumptions about who is sending and why, and picking the wrong one means paying every month for a feature set you never open.
This is a head-to-head on the pricing and tradeoffs as they stand in August 2026, written for the case where the sender is one person or a very small team running a service business. Both companies change their pricing regularly, so treat the numbers here as a starting point and confirm on their pages before you put in a card.
What email actually does for a service business
The math behind a service business is different from the math behind a creator business, and that difference drives everything else. A creator wants a list that grows continuously, because a bigger list means more buyers for the next product. A service business has a capacity ceiling, since you can only take so many clients, so the goal is not endless list growth. The goal is filling the calendar, getting repeat bookings from people who already paid you once, and staying top of mind so referrals actually arrive.
That changes what a good tool looks like. Your list is probably somewhere between 200 and 5,000 people, and a lot of them are past customers rather than cold subscribers. You are not sending three times a week. You are sending a seasonal reminder, a holiday hours notice, a price change announcement, a request for a review, and maybe a promotion when the schedule looks thin in February. Six to twenty sends a year is a normal rhythm, not a failure.
Because volume is low and list size is modest, two criteria matter more than anything a feature comparison chart will tell you. The first is how the price behaves as your contact count creeps upward over several years, since a service business accumulates old customers it never deletes. The second is how fast you can get a decent-looking email out the door on a Tuesday morning when you have twenty minutes between jobs. Advanced automation is nice, but almost nobody in this category ends up building the seven-branch workflow they imagined during the free trial.
Constant Contact, built around the business calendar
Constant Contact has been aimed at small local businesses for a long time, and the product shows it. The plan structure runs Lite, Standard, and Premium, starting at $12 per month for Lite at up to 500 contacts, $35 per month for Standard, and $80 per month for Premium. Lite covers basic email, a single welcome automation, social posting, and landing pages. Standard adds A/B testing, list segmentation, prebuilt automations, and more detailed reporting, while Premium layers on dynamic content, custom automation paths, and a managed ad tool.
The features that make it worth considering for service work are the ones nobody markets loudly. Event management is built in, which matters if you run workshops, open houses, client appreciation nights, or classes. SMS is available in the same account, so you are not maintaining two separate contact databases just to send an appointment reminder text. SMS is not included on Lite or Standard and has to be added on, while Premium bundles 500 messages per month. The template library is broad and the editor is conventional enough that most people can produce something presentable without design help.
The pricing model is where you need to pay attention, because Constant Contact bills on contacts stored rather than emails sent. Each plan carries a monthly send allowance tied to your contact count, roughly ten times your contacts on Lite, twelve times on Standard, and twenty four times on Premium, which is generous for the send rhythm described above. The problem is that a service business rarely prunes its list. At 5,000 contacts, Standard runs about $110 per month and Premium about $200 per month, which is a very different conversation than the $12 headline. Prepaying twelve months takes up to 15 percent off, and nonprofits can get up to 30 percent off with prepayment, so the annual commitment is worth doing if you are confident you are staying.
Two honest drawbacks are worth knowing before you sign up. The automation is competent but not deep, and if you have used a more modern workflow builder you will find the logic options limited relative to the price. The bigger complaint in user reviews is administrative rather than technical, since you generally cannot cancel inside the app and have to call support during business hours to close the account. Billing and auto-renewal complaints show up repeatedly in public review sites and BBB filings, which does not mean it will happen to you, but it does mean you should calendar your renewal date rather than assume you can click a button later. If the event and SMS side is what you need, you can start a Constant Contact account here and test the editor against a real send before committing to a year.
Kit, built around the audience
Kit, formerly ConvertKit, was designed for creators, and the free plan reflects a company that wants you to grow into paying rather than pay to start. The free Newsletter plan covers up to 10,000 subscribers with unlimited emails, unlimited forms and landing pages, one automated email sequence, and the ability to sell digital products. For a service business with a list under 10,000 that sends occasionally, that free tier is not a crippled demo. It is a genuinely usable product that costs nothing, and that alone puts Kit in the conversation even for businesses that look nothing like a newsletter.
Paid plans start with Creator at $39 per month for up to 1,000 subscribers, or about $33 per month if you pay annually. Creator runs roughly $59 per month at 3,000 subscribers and $89 per month at 5,000. It unlocks unlimited visual automation workflows, unlimited sequences, integrations with over a hundred apps, subject line A/B testing, RSS campaigns, and 24/7 email and chat support. Creator Pro starts around $79 per month monthly, or $66 annually, and adds subscriber scoring, deeper reporting, a newsletter referral system, and Facebook custom audience syncing.
The automation is the real reason a service business would pay for Kit. Tagging is central to how the product works, so it is straightforward to tag someone as a past client, tag by service type, and then trigger a sequence based on what they actually did rather than which list they landed on. A landscaping company can tag spring cleanup customers and fire a reminder sequence eleven months later without rebuilding the list every season. That behavior-based structure is more flexible than what Constant Contact gives you at a comparable price.
The tradeoffs are real and they are mostly aesthetic and analytical. Kit's email editor does not have true drag-and-drop, and the templates favor plain text over designed layouts, which is deliberate for creators sending personal-feeling newsletters and a genuine limitation if your business sells on visual work. A photographer or interior designer who wants a rich image grid will fight the editor. A/B testing only covers subject lines, so you cannot systematically test send times or body content, and segmentation, while flexible in the tagging model, offers a narrower set of trigger conditions than a full marketing automation platform. There is also no built-in SMS and no event registration system, so appointment reminders and class signups need a separate tool. If the free tier and the automation model fit how you work, you can set up a Kit account here and import a list without spending anything.
What each one costs as you grow
The headline prices are misleading in opposite directions, so it helps to look at the same list size on both platforms. At 500 contacts, Constant Contact Lite is $12 per month and Kit is free, though Lite gives you one automation and Kit's free plan also gives you one. At 1,000 contacts you are comparing roughly $12 to $20 on Lite against free on Kit, or $39 on Kit Creator if you want real automation. At 5,000 contacts the gap narrows and flips depending on plan, with Constant Contact Standard around $110 per month against Kit Creator at $89 per month.
The pattern is that Kit is dramatically cheaper at small list sizes because of the free tier, and roughly comparable once you are paying for both and running a few thousand contacts. Constant Contact's advantage is not price, it is scope, since events, SMS, social posting, and ads live in the same account. Whether that scope is worth the premium depends entirely on whether you will actually use those pieces.
| Tool | Best For | Free Tier | Starting Price |
|---|---|---|---|
| Constant Contact | Local and appointment-based businesses that need events, SMS, and email in one account | No free plan, trial only | $12 per month for up to 500 contacts on Lite |
| Kit | Service businesses that publish content or want tag-based automation on a small budget | Yes, up to 10,000 subscribers | Free, then $39 per month for up to 1,000 subscribers on Creator |
How to actually decide
Constant Contact makes more sense when your marketing is tied to dates and places. If you run classes, workshops, or client events, the built-in registration handling saves you from bolting on a second tool. If your business depends on appointment reminders and last-minute openings, having SMS in the same contact database is worth real money in saved friction. If you want a polished, image-heavy email and you have no interest in learning a design tool, the template library will get you there faster. Phone support also matters more to some owners than any feature does, and Constant Contact has it while Kit does not.
Kit makes more sense when your marketing is tied to content and relationships. If you publish anything at all, a blog, a monthly letter, a case study series, the sequence and tagging model is built for exactly that. If your list is under 10,000 and your budget for email marketing is honestly zero right now, the free plan lets you build the habit before you spend, which is the correct order of operations for most small service businesses. If you sell a digital product alongside your service, a template pack, a paid guide, an audit checklist, Kit will sell it without an additional platform.
There is a third answer worth stating plainly, which is that some service businesses do not need either one yet. If your booking software already sends confirmations and reminders, and you have never sent a single marketing email, the useful first step is not choosing a platform. It is writing three emails you would genuinely want to receive from a business like yours, then sending them from whichever tool you can set up in an afternoon. The platform decision gets much easier once you know what you actually plan to send.
FAQ
Is Constant Contact worth it for a small service business? It is worth it if you use the parts that justify the price, meaning events, SMS, or the social and ad tools. If all you do is send a newsletter to a list of past customers a few times a year, you are paying a premium for a broad platform and using one narrow slice of it. Run through the features on the plan you are considering and count how many you would realistically touch in a year, because two or fewer is a signal to look elsewhere.
Can I really use Kit for free forever? Yes, within limits. The free Newsletter plan supports up to 10,000 subscribers with unlimited emails, forms, and landing pages, plus one automated sequence and the ability to sell digital products. The constraint that pushes most people to upgrade is the single automation, so if you want more than one behavior-based sequence running at once, you are looking at Creator pricing.
Which is better for appointment reminders? Constant Contact, mostly because it has SMS in the same account, and appointment reminders work far better as texts than as emails. Kit has no native SMS, so you would need a separate tool and a separate contact list to do the same job. That said, many booking and scheduling systems already send reminders, so check what you have before paying for a second system to do it.
How hard is it to switch from one to the other later? Moving contacts is easy, since both platforms import CSV files and both let you export your list. What does not transfer is everything you built on top of the list, meaning automations, tags, forms, landing pages, and templates all get rebuilt by hand. That rebuild cost is small in year one and painful in year four, which is an argument for thinking a little harder now rather than defaulting to whichever tool has the better trial.
Do either of these handle invoicing or scheduling? No, and you should not expect them to. Both are email marketing platforms, so payments, booking, and invoicing stay in whatever system you already use. Constant Contact's event tool handles registration and can collect payment for an event, but that is not the same as running your day to day client billing.
The recommendation
For most one-person service businesses starting from nothing, Kit's free plan is the right first move. It costs nothing, it holds a list larger than you will likely reach, and it lets you find out whether you will actually send emails before you commit to a monthly bill. The design limitations are real, but a plain, well-written email from a business you already hired performs perfectly well, and the tagging model will handle seasonal reminders and past-client follow-up without much setup.
Constant Contact earns its price in a narrower case, and that case is specific enough to name. If you run events or classes, if text message reminders are core to how your business operates, or if you want a single account with a support line attached, the extra spend buys you something concrete instead of a longer feature list. Just go in with your eyes open on two things, that the bill grows with your stored contact count rather than your sending, and that closing the account requires a phone call. Decide with the five year list size in mind, not the one you have this month.