# Tool comparisons

Running comparisons and migration notes: Brew vs Klaviyo, Resend vs Loops, Customer.io vs Klaviyo, and what to check before switching.

- [Managing Klaviyo cost as active profiles grow](/posts/klaviyo-cost-creep-at-scale)
- [Choosing an email tool for a growing Shopify store](/posts/best-tool-for-shopify-store)
- [beehiiv or Kit for a paid newsletter](/posts/newsletter-platform-beehiiv-vs-kit)
- [Outgrowing Mailchimp on the B2B side: where to go next](/posts/moving-off-mailchimp-where-to)


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