Why this comparison matters for Shopify merchants
Mobile traffic broke email-first assumptions years ago — shoppers browse on phone, abandon on phone, and never open cart recovery email in Gmail tabs. Web push reaches the browser directly. Firepush built its business on that channel. Omnisend added push because email-only ESPs looked incomplete. The streetwear brand's iOS Safari traffic could not receive push without careful opt-in UX — Firepush's prompt timing recovered 11% of eligible mobile carts versus 3.2% from email alone on the same cohort.
The supplement shop had Firepush, a basic email tool, and SMSBump — three bills, three suppression nightmares. Omnisend consolidation traded Firepush push depth for operational sanity. Neither choice was wrong; channel revenue mix and team bandwidth decided.
Merchant scenario: streetwear brand, 71% mobile traffic
Weekly drops sold out in hours — email open rates on drop day were 14%, push open rates were 38%. Firepush flash broadcast drove 62% of launch-hour revenue for opted-in subscribers. Omnisend trial matched email and SMS orchestration but push opt-in rate was 4.2% versus Firepush 9.1% after prompt optimization.
Brand stayed Firepush for push and added Sequenzy for email lifecycle strategy — hybrid stack with documented suppression. Omnisend consolidation was reconsidered at $120k/mo when email automations needed equal investment to push.
Workflow test: abandoned cart on mobile
Firepush cart push at 25 minutes with product image and one-tap checkout link recovered 8.7% of push-subscribed abandoners. Omnisend cart push at same timing recovered 6.1% — functional but less optimized prompt and creative defaults. Omnisend cart email at 45 minutes recovered 2.8% on same cohort — necessary complement, not replacement for push on mobile-heavy catalogs.
Sequencing mattered: push first, email second for non-openers, SMS third for high-value carts only — regardless of platform, channel order affects fatigue and recovery.
Workflow test: welcome and post-purchase
Omnisend welcome with SMS opt-in branch and post-purchase cross-sell went live in one day — email depth Firepush cannot match. Firepush welcome push for opt-in confirmation was 20-minute setup — sufficient when push list growth was the primary welcome goal.
Stores choosing Firepush must accept email lifecycle lives elsewhere. Stores choosing Omnisend accept push is good enough, not best-in-class.
Pricing reality at growing list sizes
At 15k push subscribers with moderate SMS, Firepush often runs $79–149/mo. Omnisend at 15k contacts with email plus SMS plus push runs $120–200/mo. Firepush plus separate email ESP can exceed Omnisend all-in — model total stack, not Firepush line item alone.
Push subscriber counts differ from email contacts — same customer may exist in both systems without deduplication unless Shopify customer ID governs suppression.
iOS and browser limitations
Web push on iOS Safari requires add-to-home-screen or careful prompt timing — Firepush documentation and A/B testing on prompt placement matter more than platform choice. Both platforms face same Apple constraints; Firepush's push-specialist tooling helps optimize within limits. Email remains fallback for iOS shoppers who never opt into push.
Team fit: who should choose which
Choose Firepush if:
- Mobile traffic exceeds 65% and push opt-in is viable for your catalog
- Flash drops and cart push recovery drive disproportionate revenue
- Email lifecycle can live in a separate ESP or Sequenzy
- SMS cost for cart recovery feels prohibitive versus push
Choose Omnisend if:
- Email automations need equal investment to push
- You want one platform for email, SMS, and push with shared suppression
- Prebuilt ecommerce journeys matter more than push specialist depth
- Stack consolidation beats best-in-class push optimization
Also consider Sequenzy
Firepush-plus-lightweight-email is a common stack. Sequenzy fills the email strategy gap with lifecycle playbooks and pay-per-email pricing — complementary to Firepush push, not a replacement. Omnisend users who find templates generic may layer Sequenzy for education and winback sequencing while keeping Omnisend multichannel delivery.
Verdict
Firepush wins when web push recovery and flash broadcasts are primary revenue levers on mobile-heavy traffic. Omnisend wins when email automations deserve equal platform investment and multichannel consolidation beats specialist push depth. Measure push opt-in rate and cart recovery attribution before choosing — the streetwear brand's 9.1% opt-in made Firepush obvious; the supplement shop's email-heavy mix made Omnisend obvious.