Customer.io alternatives

Ranked alternatives

Free-plan tools first, then ascending by entry price, then alphabetical. Tags are derived from each tool's verified plan data; no editorial verdict claims.

1. 01
   Kit

   Email marketing built for creators.

   • Cheaper entry
   • Has free plan
   • Primarily email marketing
   From

   Free

   Plans

   3
   Kit profile Customer.io vs Kit
2. 02
   Mailchimp

   The default email marketing platform for small businesses.

   • Cheaper entry
   • Has free plan
   • Primarily email marketing
   • More plan tiers
   From

   Free

   Plans

   4
   Mailchimp profile Customer.io vs Mailchimp
3. 03
   MailerLite

   Email marketing with a generous free tier and clean editor.

   • Cheaper entry
   • Has free plan
   • Primarily email marketing
   • More plan tiers
   From

   Free

   Plans

   4
   MailerLite profile Customer.io vs MailerLite

How we ranked these

• Candidates. Every tool we hand-flagged as a Customer.io alternative, plus every tool sharing its primary category (marketing automation). Tools we don't yet track are not listed; we never link out to a tool we haven't verified.
• Order. Free-plan tools first, then ascending by entry monthly price (the headline anchor we capture from each vendor). Custom-priced tools sort last. Ties broken alphabetically.
• Tags. Each row's tags are computed against Customer.io's data: cheaper entry, free plan present, more plan tiers, enterprise tier present. No editorial "better than" claims.
• Freshness. Pricing is captured weekly from each vendor's pricing page, listed in the source citation below. Confirm at the vendor's page before buying.

Common questions

What's the cheapest alternative to Customer.io?

Kit starts at Free, the lowest entry price among 3 alternatives we track to Customer.io (which starts at $100/mo). Pricing scales differently above the entry tier; check each plan grid before buying.

Which Customer.io alternative has a free plan?

Kit, Mailchimp, MailerLite all offer permanent free plans. Free-tier limits vary, so the right pick depends on your contact count and send volume.

Are these all in the same category as Customer.io?

No. Customer.io is primarily a marketing automation tool. The alternatives listed here are adjacent tools that overlap on use case but sit in different primary categories.

Where can I compare Customer.io side-by-side with these alternatives?

Each Customer.io-vs-alternative pair has a dedicated head-to-head page on TierGauge with verified plan data, side-by-side feature mapping, and limit comparison at the entry paid tier. Pairs are linked from each row in the ranked list above; the canonical URL is /compare/<a>-vs-<b> alphabetical.