Where it wins
Omnisend gets recommended constantly as the budget-friendly email & SMS stack for ecommerce brands, especially when Klaviyo's pricing gets painful at scale. Users point to strong ROAS and conversion numbers from real store data, and the automation/flow performance (welcome series, cart abandonment, post-purchase windows) gets called out as genuinely money-making. The SMS channel gets particular love — Omnisend dropped SMS pricing to $0.007/text while competitors raised prices, and that move landed well with a price-sensitive audience.
The AI/MCP integration (running campaigns and segments through ChatGPT) is the standout recent story. People are excited about pulling six-figure customer segments conversationally instead of digging through dashboards, and Omnisend gets credit for actually shipping this while others just bolt on a chatbot widget.
Where it frustrates
The main friction is around AI autonomy: some brand owners want the ChatGPT/MCP integration to just execute — write copy, run the campaign, send the email — instead of asking for approval on every action. That "let me focus on the business, not approve every send" complaint shows up more than once. There's also a recurring frame where Omnisend is the "cheaper" pick next to Klaviyo, which is a compliment on price but can read as a knock on feature parity.
Bottom line
Broadly positive sentiment, driven by real performance numbers, aggressive pricing moves, and a fast-moving AI roadmap. The friction is about wanting more autonomy from the AI tools, not core platform reliability.