Softwr

Email Marketing · head to head

Omnisend vs Sailthru

Omnisend logo

Omnisend

Email Marketing

Email, SMS and push marketing automation for ecommerce

From
Free
Rated
-
Full reviewWebsite
Sailthru logo

Sailthru

Email Marketing

Retail and publisher email personalisation, now one product inside the Marigold portfolio

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Omnisend has a free tier, so it costs nothing to try first.
  • Each has a real cost: Omnisend free plan caps at 250 contacts and 500 emails per month; Sailthru the product sits in a portfolio with several overlapping platforms under one owner, so roadmap investment is a portfolio decision rather than a product decision and is worth asking about in writing.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Omnisend and Sailthru actually diverge.

Attributes where Omnisend and Sailthru differ
AttributeOmnisendSailthru
Starting priceFreeOn request
Pricing modelfreemiumquote
Free tierYesNo
PlatformsWebWeb, REST API

Identical on both: user rating (Not yet rated), category (Email Marketing).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Omnisend

Nothing recorded that Sailthru does not also cover.

Only in Sailthru

  • Interest profiles
  • Personalisation engine
  • Prediction Manager
  • Site personalisation
  • Zephyr templating
  • Lifecycle optimiser

What people use each for

The jobs each tool is most often brought in to do.

Omnisend

  • Sending cart abandonment recovery emails with product recommendationsnot Sailthru
  • Segmenting customers by purchase history for targeted SMS campaignsnot Sailthru
  • Creating browse abandonment sequences triggered by browsing behaviornot Sailthru
  • Generating personalized product recommendations in email messagesnot Sailthru

Sailthru

  • A publisher sending a personalised daily newsletter assembled per reader from a content cataloguenot Omnisend
  • A retailer that wants email and on-site recommendations driven by the same affinity modelnot Omnisend
  • High-cadence sending where per-recipient content assembly matters more than journey branchingnot Omnisend
  • Teams that want churn and lifetime value scores available as native campaign conditions rather than imported fieldsnot Omnisend

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Omnisend

  • Free plan caps at 250 contacts and 500 emails per month
  • Standard plan is limited to 500 contacts and 6,000 emails per month before an upgrade is required
  • SMS is billed separately starting at $0.007 per message and varies by country and volume
  • Custom pricing only begins above 150,001 contacts, requiring a sales conversation at that scale

Sailthru

  • The product sits in a portfolio with several overlapping platforms under one owner, so roadmap investment is a portfolio decision rather than a product decision and is worth asking about in writing.
  • Pricing counts stored profiles, so retained inactive readers keep costing money long after they stopped opening anything.
  • On-site personalisation requires a developer to implement the JavaScript and maintain the content feed, which puts the highest-value feature behind engineering time.
  • Zephyr is a proprietary templating language, so template maintenance skills are scarce compared with the Liquid syntax used by most competitors.
  • It is built for high-cadence content and retail sending, and B2B lifecycle programmes with long sales cycles sit poorly on the model.

Pricing, plan by plan

Omnisend

Free
  • FreeFree
    • Up to 250 contacts
    • 500 emails/month
    • 500 web push/month
  • Standard$11.2/month
    • Up to 500 contacts
    • 6,000 emails/month (12x list size)
    • Unlimited web push
  • Pro$41.3/month
    • Up to 2,500 contacts
    • Unlimited emails
    • Unlimited web push
  • Custom$undefined/mo
    • 150,001+ contacts
    • Custom pricing with dedicated account expert

Sailthru

On request
  • Sailthru$undefined/year
    • Priced on stored profiles and send volume
    • Site personalisation and prediction features licensed by module
    • Annual contract through Marigold

Which should you pick?

Choose Omnisend if

  • You want to start without paying.
Omnisend review

Choose Sailthru if

  • You need interest profiles.
  • You work on Web, REST API.
  • You also want personalisation engine.
Sailthru review

Questions people ask

Is Omnisend or Sailthru better?
Neither clearly leads. Omnisend starts at Free and Sailthru at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Omnisend or Sailthru?
Omnisend has a free tier; the other does not. Paid plans start at Free for Omnisend and On request for Sailthru.
Does Omnisend or Sailthru run on more platforms?
Omnisend runs on Web. Sailthru runs on Web, REST API.
Can I use Omnisend for free?
Yes. Omnisend has a free tier, so you can try it without paying. Sailthru starts at On request.
What is Omnisend best used for?
Omnisend is most often used for sending cart abandonment recovery emails with product recommendations, segmenting customers by purchase history for targeted sms campaigns, creating browse abandonment sequences triggered by browsing behavior, generating personalized product recommendations in email messages. Of those, sending cart abandonment recovery emails with product recommendations and segmenting customers by purchase history for targeted sms campaigns are not what Sailthru is typically brought in for.
What can Omnisend do that Sailthru cannot?
Sailthru covers Interest profiles, Personalisation engine, Prediction Manager, Site personalisation.

Answered from the vendors’ own pages

Omnisend: What is Omnisend's pricing model?

Omnisend uses contact-based tiered pricing. Free plan includes 250 contacts, Standard tier covers 500 contacts at $11.20/month, Pro tier covers 2,500 contacts at $41.30/month. Monthly or 3-month subscriptions available with 30% discount on quarterly billing.

Source
Sailthru: Who owns Sailthru now?

Marigold, formerly CM Group, which also owns Campaign Monitor, Emma, Selligent, Liveclicker and Cheetah Digital.

Omnisend: Does Omnisend charge for SMS?

Yes, SMS is an add-on with volume-based pricing starting at $0.007 per message for orders of 10,000+ messages, up to $0.009 per message for smaller volumes.

Source
Sailthru: Does that affect the roadmap?

It can. Overlapping products in one portfolio compete for investment, so ask which platform is the strategic one for your segment before signing multi-year.

Omnisend: Is there a free version of Omnisend?

Omnisend offers a free tier for up to 250 contacts with 500 emails/month, 500 web push/month, and basic automation features.

Source
Sailthru: Is it worth it just for newsletters?

For personalised daily newsletters at publisher scale it remains one of the strongest options. For simple broadcast sending it is heavily over-specified.

Omnisend: What is included in the Pro plan?

The Pro plan at $41.30/month covers up to 2,500 contacts with unlimited emails, unlimited web push, AI personalization, and SMS starting at $0.007 per message.

Source
Share

Related pages

More on Omnisend

More on Sailthru

Keep looking

Other head to heads