Omnisend vs Retain AI

Omnisend

A mature e-commerce marketing platform that added AI to jobs it already did, which is why the AI tools are useful rather than decorative — forms, reports and product picks are the tedious parts of running store email. The catch since September is that the AI now sits behind paid plans and the headline Standard price is a three-month discount, so the real bill starts higher and tracks your contact count. The MCP server, open to every plan, is a genuine extra for anyone who works from Claude or ChatGPT.

Pros

• +Forms AI and Reports AI built into the existing builder on Standard, with product recommendations and send-time AI on Pro
• +MCP server on every plan, including Free, for checking performance and managing campaigns from ChatGPT or Claude
• +Free plan with 500 emails and 250 contacts, not a trial
• +300-plus integrations including Shopify, WooCommerce, BigCommerce and Wix, plus an open API
• +Named EU company operating since 2014 with published legal entities

Cons

• −The $11.20 Standard headline is a first-three-months discount; the regular rate is $16/mo at 500 contacts
• −AI tools are no longer on the free plan, and the recommender is a paid add-on on Standard
• −SMS is metered separately on top of the plan
• −Price rises with contact count

Retain AI

Retain AI automates a tedious task — writing and sending win-back emails to lapsed customers — and costs nothing to try since it is a free Shopify app. It is best seen as the entry point to Remarkable AI's paid retention and support services: the listing gives little control over timing or content, and support responsiveness has drawn at least one recent complaint.

Pros

• +Free to install with no paid tier listed
• +Generates a custom image per email rather than reusing a static template
• +Segments lapsed customers automatically by purchase history

Cons

• −Shopify-only, no other ecommerce platforms
• −The listing shows little control over send timing or which customers are contacted
• −Only 17 reviews, and a June 2026 review reports errors with no support reply

Is Omnisend cheaper than Retain AI?

Retain AI is free to use; Omnisend starts at $16/mo.

Does Omnisend or Retain AI have a free tier?

Both: Omnisend has a free tier, and Retain AI is free to use.

Which has a public API, Omnisend or Retain AI?

Omnisend ships a public API, as of our last verification. A public API for Retain AI is not confirmed by us — check its developer docs before you plan an integration.