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Comparison
MailerLite

MailerLite

Cloud ESP
VS
Klaviyo

Klaviyo

Cloud ESP
HappyForms

HappyForms

For use with

MailerLite vs Klaviyo

Which CRM should you use with HappyForms and WP Smart Consent? Both are fully supported. Here is a side-by-side breakdown to help you decide.

MailerLite

MailerLite

Cloud ESP

MailerLite is known for its clean interface, generous free tier, and ease of use. WP Smart Consent subscribes opted-in contacts to your MailerLite groups and maps checkout fields to subscriber custom fields automatically.

  • Simple, affordable email for small teams
  • Free plan: Yes (generous)
  • Automation: Yes
  • Ecommerce: Basic
  • Real-time sync from HappyForms via WP Smart Consent
Klaviyo

Klaviyo

Cloud ESP

Klaviyo is the marketing automation platform built for ecommerce, driving revenue through behavioural email and SMS. WP Smart Consent adds consent-gated contacts to your Klaviyo lists with full profile and order context.

  • Ecommerce brands and DTC stores
  • Free plan: Yes
  • Automation: Yes (flows)
  • Ecommerce: Yes (best-in-class)
  • Real-time sync from HappyForms via WP Smart Consent

Feature comparison

Feature
MailerLite
Klaviyo
Pricing Free up to 1,000 subscribers Free up to 250 contacts, then paid
Best for Simple, affordable email for small teams Ecommerce brands and DTC stores
Free plan Yes (generous) Yes
Automation Yes Yes (flows)
Ecommerce focus Basic Yes (best-in-class)
Hosting Cloud SaaS Cloud SaaS
API REST API REST API v2024
Support Email / chat Email / chat (paid)
WP Smart Consent sync Real-time, no cron Real-time, no cron
Custom field mapping Yes Yes
GDPR consent stored Locally in WordPress Locally in WordPress

Both integrations are fully supported by WP Smart Consent. The right choice depends on your existing stack, budget, and automation needs.

Common questions

Can I switch CRMs later?

Yes. WP Smart Consent stores consent locally first. You can change your destination CRM in the settings at any time — historical opt-ins stay safe.

Can I use both at the same time?

WP Smart Consent currently sends to one destination per source. If you need multi-destination routing, you can chain via a middleware like WP Fusion.

Does it work with HappyForms?

Yes. Both MailerLite and Klaviyo are fully supported as destinations for HappyForms opt-ins through WP Smart Consent.

More comparisons for HappyForms

Ready to connect HappyForms to your CRM?

WP Smart Consent supports both MailerLite and Klaviyo , plus 17 more destinations.

Use MailerLite Get WP Smart Consent Use Klaviyo

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