Quick summary — who each plugin is best for:

  • WhoKnew Signal™ — WordPress site owners who want their subscriber data on their own server, unlimited free subscribers, iOS push included free, a built-in PWA replacing a separate plugin, self-healing subscriptions no competitor offers without Firebase, and a flat $80/yr Pro. Best for: blogs, publishers, WooCommerce stores, nonprofits, and anyone who has been paying a per-subscriber SaaS tax on their own audience.
  • PushEngage — WordPress and WooCommerce sites that need deep ecommerce automation (cart abandonment, browse abandonment, back-in-stock) and are comfortable with a SaaS model. Best for: growing WooCommerce stores at $8–$24/month.
  • OneSignal — Organizations managing both a WordPress site and a native mobile app who want everything in one dashboard. Best for: teams with development resources and multi-channel needs. Free tier is generous; costs scale significantly at volume.
  • Webpushr — Sites that want the most generous free tier available (10,000 subscribers, no feature restrictions) to validate whether push notifications work before spending anything. Best for: new sites testing the channel.
  • Gravitec — Teams that want flat-rate pricing that doesn’t scale by subscriber count. Best for: mid-size sites with cost predictability as a priority.

Push notifications are one of the highest-engagement channels available to WordPress site owners — open rates typically run 6–12%, far above email’s 2–3% average. But the WordPress push notification plugin market is confusing in ways that matter: misleading “self-hosted” claims, hidden per-subscriber pricing that scales dramatically, iOS support that’s free in some plugins and $40–$50/year extra in others, and data ownership questions that most comparisons never address.

This article covers the five plugins worth seriously considering in 2026, with honest assessments of what each one does well, where each one falls short, and which type of WordPress site each one is actually right for. We built WhoKnew Signal™, so we have a direct stake in this comparison — we’ll be transparent about that, and we’ll be accurate about what the other options do well.

How This Comparison Was Assembled

Pricing data is sourced from each vendor’s published pricing pages, OneSignal’s own pricing blog post, and third-party analysis from StackScored, Vendr, and Guideflow (all April–May 2026). Feature claims are based on each plugin’s current WordPress.org listing and product documentation. We installed and tested Signal personally — for others we relied on published documentation and independent user reviews on G2 and TrustRadius.

The Question Nobody Asks (But Should): Where Does Your Data Live?

Before comparing features, there’s a foundational question that changes how you evaluate every other factor: when someone subscribes to push notifications on your site, where does their subscription endpoint get stored?

The answer varies dramatically across plugins, and most comparison articles never address it. Here’s the landscape:

  • SaaS platforms (OneSignal, PushEngage, Webpushr, Gravitec) — your subscriber data lives on the vendor’s servers. This is the standard SaaS model, and these platforms are transparent about it. Your subscriber list is theirs to host; you access it through their dashboard. If the vendor shuts down or changes pricing, your subscriber list is locked in their system.
  • Plugins that call themselves “self-hosted” but aren’t — some WordPress push plugins use the phrase “self-hosted” while routing all subscriber data and notification delivery through their own servers or Firebase. The plugin installs on WordPress, but functionally, your data is in their cloud. iOS support in these plugins often requires a paid add-on because they had to build a proprietary Apple relay that, by definition, handles your subscriber data on their infrastructure.
  • Truly self-hosted (WhoKnew Signal™) — subscriber endpoints stored only in your WordPress database, notifications sent directly from your server using the open VAPID standard, zero outbound connections to any vendor for the free tier. Your subscriber list is yours — in your database, on your server, under your control.

Which model is right for you depends on your priorities. SaaS platforms offer more features, larger free tiers, and better multi-channel integration. True self-hosting means full data ownership, no vendor lock-in, and no monthly fees that scale with your audience. Neither is wrong — but understanding the difference before you choose matters.

A person holds a smartphone outdoors by the water, checking notifications from push notification plugins on the lock screen. The phone displays the time as 12:09 and shows alerts for social media and messaging apps.

1. WhoKnew Signal™ — Best Self-Hosted Push Notification Plugin for WordPress

Best for: WordPress site owners who want their subscriber data on their own server, blogs and publishers who want unlimited free subscribers without per-subscriber fees, WooCommerce stores that want self-hosted push automation at a flat yearly rate, nonprofits and churches replacing two plugins (PWA + push) with one, and anyone who has been charged an iOS add-on fee by their current push plugin.

Not the right choice if: You need email or in-app messaging fully integrated in the same platform, or you need native mobile app push — OneSignal handles both better.

2. PushEngage — Best for WooCommerce Automation

PushEngage

Best for WooCommerce

Free (200 subscribers) · Business $8/mo (50K subscribers) · Growth $24/mo (250K) · pushengage.com
PushEngage is the most WordPress-native of the SaaS push platforms, with a dedicated WordPress plugin that lets you manage campaigns directly from your WordPress dashboard without switching to an external dashboard for every send. Its WooCommerce integration is the deepest in the market — cart abandonment, browse abandonment, back-in-stock, and price-drop triggers are all available without custom code. According to PushEngage’s own comparison analysis, they specifically designed the WooCommerce integration to require zero coding, which is accurate and notable. Subscriber data lives on PushEngage’s servers — this is a standard SaaS arrangement, and PushEngage is transparent about it.
Strengths
  • Deepest WooCommerce automation available
  • WordPress-native dashboard management
  • $8/mo Business plan covers 50K subscribers
  • Cart and browse abandonment out of the box
  • Strong drip and automation features
  • iOS support included
Limitations
  • Subscriber data on PushEngage servers
  • Free tier limited to 200 subscribers
  • No native email/SMS in the same platform
Free: 200 subscribers · Business: $8/mo annual, 50K subscribers · Growth: $24/mo annual, 250K subscribers

Best for: WooCommerce stores that need cart abandonment recovery and ecommerce-specific automation, and are comfortable with a SaaS model at a reasonable price point.

Not the right choice if: Data ownership matters to you, you need multi-channel (email + SMS + push) in one platform, or you need the most unified web + mobile app push dashboard — OneSignal handles that better.
White cubes with black arrows are arranged in three lines on a blue background, meeting and branching off, symbolizing direction, choices, or decision-making—much like selecting the best WordPress plugins for your site.

3. OneSignal — Best for Multi-Channel and Mobile App Integration

OneSignal

Multi-Channel SaaS

Free (10K web push subscribers) · Growth from $19/mo + per-subscriber usage · onesignal.com
OneSignal is the largest push notification platform on the market, covering web push, mobile push, in-app messaging, email, and SMS from a single dashboard. If you manage both a WordPress site and a native iOS or Android app, OneSignal is the most compelling unified option available — the alternative is managing separate push systems for web and mobile, which adds operational complexity. The free tier is genuinely generous: 10,000 web push subscribers with unlimited mobile push sends. The pricing model becomes expensive at scale, however. OneSignal’s own pricing documentation shows web push billed at $0.004 per subscriber per month on the Growth plan — meaning 10,000 web push subscribers costs $40/month in subscriber fees alone, on top of the $19/month base. Independent analysis puts realistic Growth plan costs at $300–$1,500/month at actual usage volumes.
Strengths
  • Largest free tier — 10K web push subscribers
  • Unified web push + mobile app push
  • Email + SMS + in-app in one platform
  • Sophisticated journey automation
  • Strong A/B testing and segmentation
  • Large install base and documentation
Limitations
  • Subscriber data on OneSignal servers
  • Per-subscriber pricing scales dramatically
  • $19/mo base is misleading — realistic cost is $300–$1,500/mo
  • 90-day data retention limit on Growth plan
  • WordPress-specific features less deep than PushEngage
Free: 10K web push subscribers (unlimited mobile push) · Growth: $19/mo base + $0.004/web push subscriber/mo — budget $300–$1,500/mo at realistic usage

Best for: Organizations with both a WordPress site and a native mobile app, teams that need multi-channel orchestration (push + email + SMS), and early-stage sites that want the most generous free tier to validate the channel before spending anything.

Not the right choice if: You’re a small WordPress site without a mobile app — the pricing complexity and data residency are overhead that isn’t justified by the feature set you’ll actually use.

4. Webpushr — Best Free Tier for Validating the Channel

Webpushr

Most Generous Free Tier

Free (10K subscribers, no feature restrictions) · paid plans from $29/mo · webpushr.com
Webpushr’s distinguishing feature is its free tier: 10,000 subscribers with no feature restrictions, meaning you get segmentation, A/B testing, and advanced targeting without paying anything. This makes it the lowest-risk option for a WordPress site that wants to test whether push notifications actually move the needle before committing budget. According to Oddjar’s 2026 WordPress push plugin comparison, Webpushr is the safest starting point for most WordPress sites specifically because of this no-restriction free tier. The trade-off: when you exceed the free tier, paid plans start at $29/month, which is higher than PushEngage’s entry point, and the WooCommerce ecommerce automation is less developed than PushEngage’s.
Strengths
  • 10K subscribers free with no feature limits
  • WooCommerce triggers included on free plan — abandoned cart, new products, price drops, sales
  • Easy to set up and use
  • Good targeting and personalization tools
  • Reliable delivery infrastructure
Limitations
  • Subscriber data on Webpushr servers
  • Paid plans start higher than competitors ($29/mo)
  • WooCommerce automation less developed than PushEngage
  • No multi-channel (web push only)
Free: 10K subscribers, no feature restrictions · Paid: from $29/mo

Best for: New WordPress sites that want to test whether push notifications generate meaningful results before committing to any paid plan or data architecture decision.

5. Gravitec — Best for Flat-Rate Pricing at Scale

Gravitec

Flat-Rate Pricing

Free tier available · Business plan flat-rate pricing · gravitec.net
Gravitec’s primary differentiator is flat-rate pricing — unlike OneSignal’s per-subscriber model, Gravitec charges a fixed monthly rate at each tier, which makes costs predictable as your subscriber count grows. StackScored’s 2026 push notification pricing analysis identifies Gravitec’s Business plan as the most economical flat-rate option for mid-size sites. Limitations: no A/B testing, limited mobile app push support, and the WooCommerce integration covers basic triggers but lacks the depth of PushEngage. A 2025 security vulnerability (CVE-2025-62869, missing authorization, since patched) is worth noting as a reminder to keep the plugin updated. Development cadence appears slower than the other options on this list.
Strengths
  • Flat-rate pricing — cost predictable at scale
  • Basic WooCommerce triggers included
  • Straightforward setup
Limitations
  • No A/B testing
  • Limited mobile app push
  • Slower development cadence
  • 2025 security vulnerability (patched)
  • Subscriber data on Gravitec servers
Flat-rate plans — see gravitec.net for current pricing

Best for: Mid-size sites with predictable subscriber growth that want flat-rate pricing and basic push functionality without per-subscriber cost anxiety.

Side-by-Side Comparison

FeatureWhoKnew Signal™PushEngageOneSignalWebpushrGravitec
Free tier subscribersUnlimited20010,00010,000Limited
Subscriber data locationYour serverTheir serversTheir serversTheir serversTheir servers
iOS push — freeYes — includedYesYesYesYes
Firebase dependencyNoneYesYesYesYes
Built-in PWA manifestYesNoNoNoNo
iPhone install shortcodeYes — freeNoNoNoNo
Self-healing subscriptionsYesVia FirebaseVia FirebaseVia FirebaseNo
WooCommerce automationYes — Pro ($80/yr)Yes — deepest availableBasic triggersYes — included freeBasic triggers
Built-in offline page cachingYes — freeNoNoNoNo
Mobile app pushNoYes — iOS, Android, RN, FlutterYes — unifiedNoNo
Pro / paid pricing$80/yr flat$8/mo (50K subs)$300–$1,500/mo realisticFrom $29/moFlat-rate tiers
SMS notificationsPro — BYO-TwilioNoYes — includedNoNo
Zero external connectionsFree tier: yesNoNoNoNo

 

Two sticky notes are pinned to a corkboard. The left note is green and says "PROs" in black marker, while the right note is pink and says "CONs," highlighting the advantages and drawbacks of WordPress Push Notification Plugins.

How to Choose: The Decision Framework

Ask these four questions in order and the right plugin for your situation becomes clear:

1. Do you manage a native mobile app alongside your WordPress site? If yes, OneSignal is the only option that unifies web push and mobile app push in one dashboard at a reasonable entry point. Every other option on this list is web push only.

2. Does your subscriber data need to stay on your server? If yes — because of GDPR requirements, client contracts, or personal principle — WhoKnew Signal is the only option that delivers that. Every SaaS option stores your subscriber data on their servers; that’s the model they’re built on.

3. Do you have a WooCommerce store that needs serious ecommerce automation? If yes and your data can live on SaaS servers, PushEngage is the right choice. Their WooCommerce integration is the deepest available and their $8/month Business plan covers most growing stores.

4. Are you starting from zero and want to validate push before spending anything? Signal’s free tier includes unlimited subscribers with no feature restrictions on core push — it’s worth starting there. If you need a SaaS option with a generous free tier to compare, Webpushr offers 10,000 subscribers with no feature restrictions.

The Honest Summary

There is no single best push notification plugin for WordPress — there is the best plugin for your specific situation. If you run a WooCommerce store and need serious abandonment recovery automation, PushEngage earns its place. If you have a mobile app, OneSignal’s unification is genuinely valuable. If you want to test before spending, Webpushr’s free tier is the most generous among SaaS options. And if you want your subscriber data on your own server, unlimited free subscribers, iOS included free, a full built-in PWA with offline support, and a flat $80/year Pro for everything else — WhoKnew Signal was built for exactly that use case.


Further Reading

Your Data. Your Server. Unlimited Subscribers Free.

WhoKnew Signal™ is the only WordPress push notification plugin where subscriber data never leaves your server — unlimited free subscribers, zero external connections, iOS push included, full offline-capable PWA, iPhone install shortcode. Pro adds WooCommerce automation, advanced analytics, A/B testing, scheduled campaigns, and optional SMS notifications via your own Twilio account for a flat $80/year.

Get WhoKnew Signal™ →

Download the free version from WordPress.org · Pro $80/yr · No credit card required for free tier

Who knew the most important question in choosing a WordPress push notification plugin wasn’t the feature list — it was where your subscriber data actually lives after you click install.

J. Moody, Founder/CEO

Author J. Moody, Founder/CEO

I build WordPress and WooCommerce plugins to solve problems I've actually hit myself — not theoretical ones. I've done a little bit of everything and built the tools I wished existed along the way.

More posts by J. Moody, Founder/CEO
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