Short answer: for most solo founders building an audience or selling a small product, ConvertKit or MailerLite are the best overall balance of ease, automation and price. Pick ConvertKit if you want creator-friendly automation and monetization; pick MailerLite if you want the cheapest, simplest path with good templates. Below are focused recommendations and when to choose each.
Top picks (quick pros/cons)
- ConvertKit
- Pros: built for creators/founders, clean UI, easy automations and tagging, good landing pages/forms, built-in paid-subscriptions. Great for onboarding funnels and audience-first businesses.
- Cons: fewer visual templates; paid plans scale with subscriber count.
- MailerLite
- Pros: very affordable, simple drag-and-drop editor, good automation basics, landing pages and popups, strong value for small lists.
- Cons: fewer advanced automation features than ConvertKit/ActiveCampaign.
- Brevo (formerly Sendinblue)
- Pros: pay-per-email model with unlimited contacts, strong transactional email/SMS options, decent automations and SMTP.
- Cons: UI can feel clunkier; templates less polished.
- Beehiiv
- Pros: focused on newsletters and monetization (subscriptions, analytics for growth), great if your main product is a newsletter.
- Cons: less of a full marketing stack for complex automations.
- Mailchimp
- Pros: feature-rich (templates, automations, CRM), many integrations.
- Cons: can be expensive and noisy for a solo founder; recent changes have made free plan less generous.
- Klaviyo
- Pros: best-in-class ecommerce email/SMS segmentation and revenue tracking.
- Cons: expensive for growing lists; overkill unless you run ecommerce.
How to choose (simple guide)
- Primary goal = newsletter/creator monetization → Beehiiv or ConvertKit (Substack if you want zero maintenance and built-in payments).
- Primary goal = low budget + simple campaigns → MailerLite or Brevo.
- Primary goal = ecommerce store and revenue-driven flows → Klaviyo (if you can afford it).
- Need transactional emails + marketing in one place → Brevo or MailerLite + Postmark for deliverability.
- Want the most powerful automations/CRM as you scale → ActiveCampaign (more complex, higher learning curve).
Other practical factors to consider
- Free tier / pricing model: does it charge by contacts or emails sent?
- Integrations: do you need Shopify/Stripe/Website/CMS/Webhooks?
- Deliverability & reporting: important as your list grows.
- Ease of use: time you can spend learning and building sequences.
- Monetization: built-in paid newsletters vs external payment tools.
My recommendation for a solo founder starting today
- If you want a balance of ease, automation, growth features and creator-centric tools: start with ConvertKit.
- If your budget is tight and you want the simplest, cheapest route: start with MailerLite.
Either will let you import a CSV, create opt-in forms and landing pages, and run automated funnels without much setup.
If you tell me your product type (SaaS, ecommerce, newsletter, consulting), current list size and budget, I’ll recommend the single best choice and a short migration/onboarding checklist.