MailerLite vs ConvertKit (Now Kit) for Authors: The 2026 Deliverability, Pricing, and Feature Showdown

For indie authors operating in today’s competitive publishing landscape, relying solely on Amazon algorithms or social media algorithms is a recipe for low roya…

MailerLite vs ConvertKit for authors is a core newsletter platform comparison for indie writers trying to balance tight marketing budgets with advanced automated reader funnels. A poor choice of email service provider (ESP) can hurt book sales without anyone noticing, whether by pushing launch announcements into Gmail's promotional tab or by billing heavily for subscribers who never open a newsletter. This 2026 guide looks at pricing models, tagging, automation workflows, and inbox deliverability, to help indie authors pick the software that suits their business.

Introduction: Why Email Marketing Makes or Breaks an Indie Author
Pricing Structures Compared: Free Tiers and Subscriber Scaling
Automation and Reader Funnels: Which Platform Builds Better Automated Sequences?
Deliverability and Inbox Placement: Reaching the Primary Tab
Step 1 of 4: Auditing the Current Email List and Setup
Step 2 of 4: Migrating or Launching the Reader Magnet Funnel
Step 3 of 4: Setting Up Dynamic Segmentation and Tagging
Step 4 of 4: Analyzing Open Rates, CTR, and Conversion Metrics
Frequently Asked Questions
Conclusion and Final Recommendations

Introduction: Why Email Marketing Makes or Breaks an Indie Author

Indie authors who depend only on Amazon's algorithms or on social media feeds tend to see low royalties as competition stiffens. As strategy breakdowns at The Publishing Times have shown many times, a direct-to-reader email list is the one marketing channel an author truly owns. That holds for a multi-author cross-promotion, an exclusive ARC (Advance Reader Copy) team, or a large launch push alike. In each case the email service provider is the engine room of the whole author career.

Two names come up again and again in indie author forums, Facebook groups, and industry panels when talk turns to email marketing: MailerLite and ConvertKit (which rebranded to "Kit"). Both are designed with creators in mind, yet they take very different approaches to pricing, feature access, and user experience. Knowing those differences helps authors avoid spending scarce marketing money on features they will never use. It also helps them avoid the opposite trap, a platform that cannot handle the automation logic they will need as they grow.

Pricing Structures Compared: Free Tiers and Subscriber Scaling

For new and mid-list indie authors, price is nearly always the first limit. Writing a book costs money, and until the backlist brings in steady royalties, each software subscription comes straight out of profit. MailerLite and Kit bill in very different ways, most of all in how their subscriber tiers scale and what their free plans leave out.

Budget-minded indie authors have praised MailerLite for years because of its generous free tier. Below a certain subscriber threshold, it offers core automation features and landing page builders with no credit card needed. On paid plans, MailerLite uses a flat tier system set by subscriber count, and most paid tiers include unlimited emails. MailerLite also counts only active subscribers, though older contacts still need cleaning up so that cold, unengaged leads are not billed.

Kit (formerly ConvertKit) has traditionally marketed itself as a premium tool for professional creators. Its free plan handles landing pages well, but most automation workflows sit behind paid tiers. Once an author moves to a paid Kit plan, prices climb steeply at each subscriber milestone. Kit bills on confirmed subscribers, and unsubscribed contacts do not count toward the plan total, according to Kit's help center. For a closer look at organizing these systems, resources like Browse all author guides offer detailed breakdowns on optimizing author tech stacks.

Feature / Metric	MailerLite	Kit (ConvertKit)
Free Tier Limit	Up to 250 subscribers and 2,500 emails a month (since June 2026)	Up to 10,000 subscribers; strong landing pages, but no automations or sequences
Paid Pricing Model	Tiered flat-rate pricing based on block ranges	Scaled pricing per subscriber milestone
Duplicate Subscriber Handling	Does not charge for duplicate emails across groups	Charges per unique email address globally
Automation on Free Plan	Basic automations (check current free-plan limits)	Landing pages only, no visual automation builder

Automation and Reader Funnels: Which Platform Builds Better Automated Sequences?

The main technical need for most indie authors is an automated reader magnet funnel. This is the sequence that starts when a reader downloads a free short story or prequel novella and then receives a series of welcome emails, backlist promotions, and buy links. MailerLite and Kit both include visual automation builders, but they differ a good deal in execution, flexibility, and how long they take to learn.

MailerLite uses a drag-and-drop workflow canvas that visual thinkers tend to find natural. Branching logic is simple to set up, for example checking whether a subscriber clicked a particular book link and then sending a follow-up based on what they did. For most fiction authors who write in several subgenres (e.g., epic fantasy and clean romance), MailerLite's groups and tags make it easy to keep audiences apart without writing complicated conditional rules.

Kit was designed from the start around tags and individual subscribers instead of fixed static lists. That design makes it especially strong for complicated multi-book funnels, where one subscriber may carry dozens of tags showing which subgenres they read, which Kickstarter tiers they backed, or whether they are on the launch team. Kit’s visual automation builder is solid and clean and seldom glitches. Its minimalist approach does mean that some advanced formatting requires custom CSS or markdown blocks.

Deliverability and Inbox Placement: Reaching the Primary Tab

A list of 10,000 subscribers is worth little if the launch announcement ends up in the Gmail "Promotions" tab, or worse, in spam. Deliverability, meaning the share of sent emails that actually land in a reader's primary inbox, is the hidden figure behind an author's conversion rate.

MailerLite and Kit both spend heavily on infrastructure. They enforce strict sender policies, require custom domain authentication (SPF, DKIM, and DMARC records), and watch spam complaint rates closely. Even so, how senders behave and how their accounts are configured has a large effect on how Internet Service Providers (ISPs) handle their broadcasts.

New MailerLite accounts face strict compliance checks. The free tier draws so many users that the company manually reviews early campaigns and website domains to stop spam abuse. For indie authors who build lists cleanly, never importing purchased lists and using double opt-in, MailerLite's deliverability rates hold up against any top-tier enterprise ESP.

Kit has a strong reputation in the professional creator economy for excellent deliverability. It enforces strict anti-spam rules and serves established authors and entrepreneurs who rely heavily on double opt-in, so ISPs treat the reputation of Kit's sending IPs with a high level of trust. For a high-stakes release, where each click can feed Amazon bestseller rankings, Kit’s underlying mail delivery system offers real reassurance.

📚 Recommended Resource: Newsletter Ninja by Tammi Labrecque
Master email marketing for authors, reduce unsubscribes, and turn casual subscribers into raving fans with proven engagement strategies.
→ Get it on Amazon

Step 1 of 4: Auditing the Current Email List and Setup

Before switching platforms or signing up with a new one, authors should review the health of their current subscriber list, how clean it is, and their technical domain records. Correct technical setup keeps major email providers from flagging newsletters as spoofing attempts.

Check the Sender Domain: Author newsletters should never go out from a generic @gmail.com or @yahoo.com address. A custom domain that matches the author name is the better choice (e.g., name@authorname.com).
Configure Authentication Records: In the domain registrar, confirm that the SPF, DKIM, and DMARC records point correctly to the chosen email provider. Modern inbox placement depends on this step.
Audit Unengaged Subscribers: Run a report of subscribers who have not opened or clicked an email in the last 90 to 180 days. Keeping that dead weight lowers open rates and costs money on tiered billing plans.
Review Privacy Compliance: Make sure signup forms meet GDPR, CCPA, and other international data privacy rules, with clear consent checkboxes wherever they are required.

Step 2 of 4: Migrating or Launching the Reader Magnet Funnel

Moving the main assets, which means signup forms, landing pages, and automated delivery sequences, needs a careful, orderly approach so readers notice nothing during the handoff.

Export the Cleaned List: Download active subscribers as a CSV file, checking that the columns for email address, first name, and relevant custom tags map correctly.
Recreate Landing Pages: Rebuild the book giveaway landing pages on the new platform and keep them clean, quick to load, and mobile-responsive, since a large share of readers check email on smartphones.
Build the Welcome Sequence: Copy the existing email text into the new automated workflow canvas. Confirm that every buy button links to the correct universal book links or retailer pages.
Test the Loop: Sign up through the live landing page with a second personal email address. Check that the confirmation email arrives at once, the reader magnet PDF or EPUB downloads properly, and the welcome sequence fires on schedule.

Step 3 of 4: Dynamic Segmentation and Tagging

As a backlist grows, sending every newsletter to the full subscriber base wears readers out and raises unsubscribe rates. Dynamic segmentation keeps cozy mystery readers from receiving loud launch updates for a hard-boiled thriller.

[Subscriber Joins List] 
       │
       ├──> [Downloads Cozy Mystery Magnet] ──> Tag: [Genre: Cozy] ──> Trigger Cozy Funnel
       │
       └──> [Downloads Sci-Fi Magnet]     ──> Tag: [Genre: Sci-Fi] ──> Trigger Sci-Fi Funnel

Establish a Naming Convention for Tags: Consistent prefixes (e.g., Genre_, Source_, Status_) keep the database orderly as the bibliography grows.
Implement Interest-Based Click Triggers: Short poll links inside general newsletters (e.g., "Click here if you read my fantasy series") can tag readers automatically according to what they show interest in.
Isolate the ARC Team: Set up a separate segment or dedicated group for the advanced review team, and send exclusive beta chapters and review reminders only to that trusted group.
Clean Up Unused Tags: Remove obsolete promotional tags from old campaigns from time to time so the backend stays tidy and easy to use.

Step 4 of 4: Analyzing Open Rates, CTR, and Conversion Metrics

Careful use of data is what turns an author from a hobbyist who guesses into a publishing entrepreneur with a system. Following the right metrics helps authors sharpen their copywriting and get more return on what they spend.

Monitor Open Rates Consistently: A common industry target is an open rate between 35% and 50%+ on welcome sequences and dedicated book launches. Low open rates point to weak subject lines or a list in decline.
Track Click-Through Rates (CTR): Privacy features (like Apple's Mail Privacy Protection) can sometimes inflate open rates artificially. CTR is a truer sign of reader intent, because it shows how many readers actually click the retailer buy links.
A/B Test Subject Lines: Try different subject line approaches, such as curiosity gaps versus direct value propositions, on small test segments before sending to the main list.
Review Unsubscribe Spikes: Look at which emails set off unsubscriptions. If a new release announcement causes a spike, it is worth asking whether the message was aimed at the wrong segment.

Frequently Asked Questions

Q: Can an author migrate between MailerLite and Kit without losing subscribers?
A: Yes. Moving between any of the major email service providers works by exporting the active subscriber list as a CSV file and importing it into the new platform. Automated workflows and landing pages will need rebuilding, though, and the custom domain DNS records will need verifying again from scratch.

Q: Does a new indie author need a paid email plan?
A: No. MailerLite and Kit both have usable entry points for authors with no budget at all. An author who needs automated welcome sequences to deliver a reader magnet should check that the chosen free plan includes basic automation, or else make use of introductory trials.

Q: How can author newsletters avoid the Gmail Promotions tab?
A: Staying out of the Promotions tab entirely is hard, because Gmail sorts commercial mail automatically. Primary inbox placement can still improve when authors ask subscribers to reply to the welcome email and add the sender address to their contacts. Avoiding image-heavy layouts and spam trigger words also helps.

Q: Which platform is better for indie authors writing across multiple different genres?
A: Each handles multi-genre pen names well. Kit's tag-based design gives a little more flexibility for managing overlapping subscriber interests without creating duplicate contact profiles. For a fuller look at outside software integrations, see Author Tools.

Q: Does MailerLite count unsubscribed or deleted contacts toward billing?
A: No. MailerLite typically bills on active subscribers only. Even so, bounced, spam-complaint, and unengaged contacts should be cleared out regularly to keep account metrics healthy and avoid surprise jumps in billing.

Q: How often should indie authors clean their email lists?
A: A re-engagement campaign aimed at unengaged subscribers once or twice a year is a sensible minimum. Subscribers who have not opened or clicked an email in 6 to 12 months can then be removed or suppressed, which protects sender reputation and lowers the monthly software bill.

Q: Are custom domains required to use MailerLite or Kit effectively?
A: Some free tiers make a custom domain technically optional, but serious indie authors need one. Sending from a free Yahoo or Gmail address badly damages deliverability, draws more spam filtering, and looks unprofessional to readers.

Q: Where can authors learn more about book funnel strategies?
A: Publishing case studies, industry analysis, and creator updates are on the homepage at The Publishing Times, and industry benchmarks can be found on platforms like Amazon KDP.

Conclusion and Final Recommendations

In the end, the choice between MailerLite and Kit rests on budget, technical comfort, and long-term publishing goals. First, a newer indie author who wants the most features on a lean budget, with an easy visual builder, will likely find MailerLite the best fit. Second, an author with a large cross-genre backlist who values enterprise-grade deliverability and needs advanced tagging logic may find Kit worth its higher price. Third, the specific tool matters far less than steady list-building and engaging communication with readers. The practical next steps are to set up a reader magnet now, keep the audience engaged with worthwhile content, and treat the email list as the foundation of a lasting author business.

📚

Strangers to Superfans by David Gaughran

Covers building automated reader funnels, setting up Facebook and Amazon ads, and converting casual downloaders into lifelong book buyers.

→ Get it on Amazon

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