Omnisend vs Mailerflow: Ecommerce Automations, SMS, AI and Pricing Compared

Omnisend vs Mailerflow comes down to what you actually need from an email platform: Omnisend is positioned as an ecommerce email and SMS platform with a billing model built around subscribers; Mailerflow is an AI-first email platform with unlimited emails on every paid plan, a free tier of 2,500 contacts and 10,000 emails a month, and paid plans from $14.90/month. If you sell physical products and want SMS in the same place as email, Omnisend is worth a serious look. If you want predictable sending costs, EU data hosting and AI that drafts emails and automations from a description, Mailerflow is the more direct fit. The rest of this article separates verified facts (with the date checked and the source named) from judgment, so you can apply the criteria to your own situation.

Side-by-side comparison

Competitor details below were verified on 2026-10-16 on Omnisend's official pricing page (omnisend.com/pricing). Mailerflow details come from Mailerflow's own plan documentation. Where a cell says "check Omnisend's official pricing page," that means the fact was not verified at the time of writing and you should confirm it directly. For any competitor detail not listed here — current plan names, limits, editor capabilities, integrations — check the vendor's official pricing page and documentation, since these change.

Pricing and plan limits

The two platforms bill on different philosophies, and that difference matters more than any single number.

Omnisend, as verified on 2026-10-16 on omnisend.com/pricing, bills for subscribers and for non-subscribers who received automated messages. Unsubscribed contacts are not billed. SMS starts at $0.007 per SMS. There is a discount for paying three months upfront, and pricing is displayed in USD, CAD, AUD, GBP and EUR, with local-currency figures described as estimates and billing in USD. Omnisend also states that customers can save up to 35% versus Klaviyo.

Mailerflow's plans, from its own documentation:

Yearly billing costs the same as 10 months. Every paid plan includes unlimited emails, so your cost is driven by list size, not by how often you send.

Here is a worked example (illustrative, not a quote from either vendor, and no Omnisend figure is asserted here). Say you have 12,000 contacts and send six campaigns a month. On Mailerflow, that list size lands on the Growth plan at $29.90/month, and the six campaigns cost nothing extra because emails are unlimited. On Omnisend, you would need to check the current price for 12,000 subscribers on its official pricing page, then add SMS costs if you use them. The point is not that one is cheaper — it is that you should plug in your own contact count and send volume and compare the two totals, then confirm Omnisend's current numbers on its official page, since pricing changes.

Email editor and templates

Mailerflow gives you a visual block editor (headings, heroes, products, columns, social links) and reusable templates. The AI email builder is the concrete differentiator: describe the email you want and you get a complete responsive design, plus subject lines and preview text. For teams without a designer, that shortens the gap between "we need a campaign out today" and a finished send.

Omnisend's editor and template library should be evaluated inside its free trial rather than taken on trust. Build one product-led campaign in each tool and compare how much manual layout work is left. Check the current editor capabilities on Omnisend's own site before you commit.

Automation

Mailerflow's automations are visual, with waits, conditions, webhooks and AI steps. Triggers cover signups, events, dates, inactivity and website behavior. There is also an AI automation builder: describe a workflow in a sentence and Mailerflow drafts it — trigger, waits, conditions, emails — for you to review before activation. A/B testing and "send when the contact is most active" are available in automations.

For Omnisend, the practical question is which ecommerce events you need out of the box — abandoned cart, browse abandonment, post-purchase, win-back — and how much you are willing to build yourself. Rebuild your three highest-revenue flows in a trial on each platform and time how long it takes; that tells you more than any feature list.

Segmentation and personalization

Mailerflow builds dynamic segments on fields, tags, engagement, events and website behavior, and can generate a segment from a plain-language description. AI personalization steps and website-behavior data (via a JS SDK) let you tailor emails to what each contact read or did.

For Omnisend, test segmentation against your own data model in a trial. Take one segment you actually rely on — for example (illustrative) contacts who viewed a product page twice in 14 days but never purchased — and try to build it on each platform. If one can't express it without a workaround, that is a real constraint for your team.

Deliverability and sending infrastructure

Mailerflow sends from your own domain with guided DKIM, SPF and DMARC setup and automatic verification. Bounces and complaints are suppressed automatically, and there is reputation monitoring plus warm-up limits. Analytics cover delivery, bounces, complaints, clicks and approximate opens, per campaign and overall.

Omnisend is an email and SMS platform; its deliverability tooling and sending setup should be confirmed on its documentation. No platform can promise inbox placement, and there is no verified data here to compare them on that basis — treat any such claim with suspicion.

Transactional email, API and integrations

Mailerflow offers a transactional email API on a high-priority lane with templates and variables. The REST API supports scoped keys, idempotency keys, an OpenAPI spec, code samples and a JS SDK. Signed real-time webhooks include retries and delivery logs.

For Omnisend, check the integration catalogue and API scope on its own site against your stack — Shopify, WooCommerce, or a custom backend. If you have a developer on the team, shortlist by requirement rather than by brand: write down the events you need to trigger, then confirm each platform can receive them.

Support, data location and compliance

Omnisend, verified 2026-10-16 on omnisend.com/pricing, provides 24/7 support described as award-winning, and a 5-day free migration.

Mailerflow offers free migration help (contacts, suppression lists, templates, core automations) on eligible paid plans. CSV import includes duplicate and validity checks, plus custom fields and tags. GDPR tools cover data export, erasure, consent logs and configurable retention, and data is hosted in Europe. If you have EU customers, data location is worth confirming for both vendors — check Omnisend's hosting arrangements directly with Omnisend.

Which one to choose

Choose Omnisend if you want email and SMS handled in one place, with SMS from $0.007 per SMS; you value 24/7 support and a 5-day free migration; and you prefer a billing model that counts subscribers plus non-subscribers who received automated messages, with unsubscribed contacts excluded.

Choose Mailerflow if you want unlimited emails on every paid plan; a free tier of 2,500 contacts and 10,000 emails a month to test properly; EU data hosting; AI that drafts emails and automations from a description; and a migration path with duplicate and validity checks plus free migration help on eligible paid plans.

How to decide in an afternoon:

1. List your must-have flows (abandoned cart, welcome, win-back, post-purchase).
2. Estimate your monthly send volume and your SMS needs.
3. Note any data-residency requirement.
4. Trial both, rebuild one flow in each, and compare the totals on your own numbers.

If you are also weighing newsletter-first tools, our Beehiiv vs Mailerflow comparison covers a different trade-off, and the Beehiiv alternatives guide walks through how to choose a platform more broadly.

FAQ

Does Omnisend charge for unsubscribed contacts?

No. Verified 2026-10-16 on omnisend.com/pricing, unsubscribed contacts are not billed. Omnisend bills for subscribers and for non-subscribers who received automated messages.

Does Mailerflow have a free plan?

Yes — 2,500 contacts and 10,000 emails a month, with 1 sending domain, 1 user, 3 active automations and 100 AI actions per month.

Are emails unlimited on Mailerflow paid plans?

Yes. Every paid plan from Starter upward includes unlimited emails, so your cost tracks list size rather than send frequency.

Can I migrate my contacts and automations?

Mailerflow supports CSV import with duplicate and validity checks, plus free migration help (contacts, suppression lists, templates, core automations) on eligible paid plans. Omnisend offers a 5-day free migration, verified 2026-10-16 on omnisend.com/pricing.

Where is Mailerflow data hosted?

In Europe. That matters if you have EU customers and want to keep contact data within the region.

Ready to compare on your own numbers? Try Mailerflow on the Free plan — 2,500 contacts, 10,000 emails a month and the AI automation builder included — import your contacts by CSV, and ask about free migration help on eligible paid plans. You can also review the full feature set before you start.