Email marketing · 2026
Customer.io·vs·MailerLite
Two solid choices in email marketing. Here's how they stack up on pricing, fit, and trade-offs — so you can decide in a minute.
Reviewed by Switchpoint Editors ·
Contender A
Customer.io
Event-driven messaging for product-led teams — the technical upgrade from ActiveCampaign.
- SaaS and product teams that want behavior-triggered email, SMS, and push driven by their own data.
- Essentials from $100/mo for 5,000 profiles. Premium from $1,000/mo for larger volumes.
Best for
Pricing
Pros
- Real event-based triggers — react to anything your product sends
- Best-in-class workspaces, branching, and A/B logic
- Email + push + SMS + in-app in one workflow
Trade-offs
- Starts at $100/mo — not for hobby projects
- Requires developer setup to send events; not a drag-and-drop marketer tool
Contender B
MailerLite
The closest like-for-like Mailchimp replacement, cheaper at every tier.
- Small businesses and creators who want Mailchimp's UX without Intuit's bill.
- Free up to 1,000 subscribers / 12k sends. Growing Business from $9/mo for 500 subs.
Best for
Pricing
Pros
- Clean editor and templates that beat Mailchimp's current UI
- Free plan includes automations Mailchimp gates behind paid tiers
- Strong deliverability reputation among SMB senders
Trade-offs
- Manual account approval can take 24–48 hours
- Still contact-based pricing — same trap as Mailchimp at scale
The matrix
Side-by-side
Best for
Customer.io
SaaS and product teams that want behavior-triggered email, SMS, and push driven by their own data.
MailerLite
Small businesses and creators who want Mailchimp's UX without Intuit's bill.
Pricing
Customer.io
Essentials from $100/mo for 5,000 profiles. Premium from $1,000/mo for larger volumes.
MailerLite
Free up to 1,000 subscribers / 12k sends. Growing Business from $9/mo for 500 subs.
Top strength
Customer.io
Real event-based triggers — react to anything your product sends
MailerLite
Clean editor and templates that beat Mailchimp's current UI
Biggest trade-off
Customer.io
Starts at $100/mo — not for hobby projects
MailerLite
Manual account approval can take 24–48 hours
The verdict
Which should you pick?
SaaS and product teams that want behavior-triggered email, SMS, and push driven by their own data.
Small businesses and creators who want Mailchimp's UX without Intuit's bill.
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