MailerLite technically blocks a non-compliant send — postal address and unsubscribe link can’t be removed, and an error stops sending if either is missing — while Constant Contact requires a branded unsubscribe link and cites the TCPA for SMS opt-outs without ever stating whether a non-compliant send is technically blocked. Scope compared, criterion by criterion. Checked 14 September 2026.





MailerLite is built for the email marketing manager or independent creator who builds, designs, and mails their own list without needing a developer. Constant Contact instead names the small business and the nonprofit as its buyers, offering a nonprofit rate discounted by thirty percent, while its entry-level Lite plan opens only one user license.
MailerLite technically blocks a non-compliant send: the postal address and unsubscribe link cannot be removed from a campaign, an error stops the send if either is absent, and one-click unsubscribe is on by default — though no numeric processing deadline or named state law appears on its own pages. Constant Contact requires a branded unsubscribe link on every send and cites the TCPA for text-message opt-outs with an automatic STOP reply, but its postal-address rule, its processing deadline, and any named state law are absent from the anti-spam and terms pages that were checked — pages that themselves refused to load.
Constant Contact states a ninety-seven percent delivery rate on its email marketing page and a ninety-eight percent inbox rate on its Why Us page, both dated the same day — the vendor publishes both. MailerLite instead ties its own deliverability to a threshold: a dedicated IP requires fifty thousand weekly emails and one authenticated domain, with every new account needing approval before it can send at all.
One Constant Contact page announces seven hundred plus templates in its title, six hundred plus in its meta description, and a separate page says simply “hundreds” — the vendor publishes all three counts at once. MailerLite states its own count directly: over fifty pre-designed templates, restricted to the Comfort and Power plans, alongside a drag-and-drop editor with more than seventy content blocks.
Constant Contact’s pricing page promises a full refund within thirty days, while its cancellation article states that prepayments are non-refundable even on early cancellation — the vendor publishes both. MailerLite makes no refund promise either way: cancelling simply downgrades the account to the free plan at the end of the cycle with data kept, and deleting it opens a twenty-five day grace period first.
MailerLite collects and remits sales tax on its own fees in sixteen states plus the District of Columbia, at a combined state-and-county rate by zip code, and states plainly that it bears its own nexus determination. Constant Contact charges sales tax in thirty-seven states by billing address, with nexus compliance placed on the vendor as well, naming Delaware, Montana, New Hampshire, and Oregon as its no-tax states.
MailerLite hosts on Google Cloud Platform in data centers located in Germany and the Netherlands, under a Data Processing Agreement that still permits worldwide processing framed by Standard Contractual Clauses. Constant Contact names hosting only for its separate Lead Gen and CRM product, on Google Cloud Platform alongside AWS; no country or region is named for the email platform itself, and the Trust Center and terms pages needed to check further were refused.
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