Compare the billing model, not the feature table
These pages name their sources and check them on a stated date. They deliberately avoid price comparisons, because both vendors can change a plan and a stale number is worse than no number.
KlaviyoMailprompt vs Klaviyo: two ways to pay for emailKlaviyo documents pricing by active profile count. Mailprompt bills by emails sent per month. Compare the two models, what each rewards and who each fits.MailchimpMailprompt vs Mailchimp: contacts, sends and the billMailchimp combines a plan and a contact count into a pricing tier. Mailprompt bills by emails sent. Compare the models and trade-offs before you switch.
What these pages do not claim
There is no tested one-click importer from Klaviyo or Mailchimp. A migration is a rebuild: map the triggers, rewrite the copy, recreate the segments and run both systems in parallel long enough to compare results.
Every factual statement about another vendor links to that vendor's own documentation, with the date the page was checked. Mailprompt's own prices come from the pricing page.