Most comparison articles pit tools against each other as if they do the same job. Klaviyo, Brevo, and PushEngage don’t.
You’re likely searching this because you want to bring more users back — and you’re not sure whether you need a better email platform, an affordable all-in-one, or something that reaches customers before they ever open their inbox. The honest answer is that these three tools serve genuinely different retention jobs. Knowing which job you’re trying to get done makes the choice obvious.
Here’s the real picture: Klaviyo is the email and SMS powerhouse built for eCommerce data depth. Brevo (formerly Sendinblue) is the affordable multi-channel sender that bundles email, SMS, and (via Wonderpush) web push under one send-volume pricing model. PushEngage is the retention channel that catches users mid-decision via web push, app push, and WhatsApp — reaching anonymous visitors who never gave you an email address, and landing notifications in seconds rather than waiting for tomorrow’s inbox.
Many merchants end up running PushEngage alongside an email tool, not instead of one. This article will help you figure out which combination makes sense for your stack.
TL;DR: Who Each Tool Is For
| 工具 | 最适合 | Pricing Model | 渠道 |
|---|---|---|---|
| Klaviyo | eCommerce brands that want deep Shopify/BigCommerce data tied directly to email and SMS flows | List-size based (you pay as your list grows, whether subscribers are active or not) | Email, SMS |
| Brevo | Cost-conscious teams that want email, SMS, and basic push under one bill | Send-volume based (you pay per email or message sent) | Email, SMS, web push (via Wonderpush), live chat |
| PushEngage | Merchants and publishers who want to bring users back on a channel they own — including anonymous visitors — without a per-message bill | Active-subscriber based (you pay only for subscribers who are genuinely active) | Web push, app push (iOS/Android/React Native/Flutter), WhatsApp, live chat widget |
The Feature and Pricing Comparison
| Klaviyo | Brevo | PushEngage | |
|---|---|---|---|
| Primary channel | 网站推送 | ||
| Additional channels | SMS | SMS, web push (Wonderpush), live chat | App push (iOS/Android/React Native/Flutter), WhatsApp, live chat widget |
| Pricing model | List-size based | Send-volume based | Active-subscriber based |
| Per-message bill | Yes (SMS) | Yes (SMS and email sends above free tier) | 否 |
| Free tier | Limited (up to 250 contacts) | Yes (email sends up to daily limit) | Yes (1 site, up to 200 subscribers, 30 campaigns) |
| Reaches anonymous visitors | No (requires email opt-in) | No (requires email opt-in) | Yes (web push requires no email) |
| WooCommerce native plugin | Via third-party | Via third-party | Native plugin, no engineering ticket required |
| Shopify native plugin | Deep native integration | Available | Native plugin |
| WordPress native plugin | 否 | 否 | Native plugin on WordPress.org |
| 购物车放弃 | Yes (email/SMS) | Yes (email/SMS) | Yes (web push + WhatsApp) — see how it works |
| 浏览放弃 | Yes (email) | Yes (email) | Yes (web push) — see how it works |
| AI copywriting | 是 | 有限 | Yes (AI Copywriter built in) |
| A/B 测试 | 是 | 是 | 是 |
| Best-fit market | Mid-market to enterprise eCommerce | SMB to mid-market, cost-sensitive teams | SMB to mid-market eCommerce, publishers, SaaS |
Klaviyo: The eCommerce Email and SMS Powerhouse
Klaviyo is the platform that made eCommerce email data-native. Its Shopify and BigCommerce integrations are genuinely deep — behavioral triggers, predictive analytics, customer lifetime value modeling, product recommendation blocks in email — all tied directly to your store data. If your team lives in Shopify and email is your primary retention channel, Klaviyo is hard to match.
Where Klaviyo wins:
- Deep Shopify and BigCommerce data means your flows can act on granular purchase history, predicted next order date, and custom properties synced from your store.
- Email is a mature, high-trust channel. For high-ticket products, a well-timed email often outperforms a push notification.
- The flow builder and segmentation tooling are among the most powerful available for eCommerce specifically.
- Klaviyo’s SMS is strong for US-based brands that want both email and text from one platform.
Where Klaviyo has limits:
- Pricing is list-size based. Your bill grows as your list grows — whether those subscribers are actively opening or not. For large lists with variable engagement, this model gets expensive fast.
- Klaviyo requires an email address to engage someone. It cannot reach a user who browsed three product pages and left without ever opting in.
- Email is a deferred channel. Even the best open rates mean your message lands hours or days after the moment of intent — when someone was mid-decision on your product page.
- It is not a web push or app push tool. You would need a separate platform if you want to reach users on those channels.
The honest summary: If email is your primary channel and you’re on Shopify, Klaviyo earns its place. The cost gets harder to justify as your list scales without a matching lift in engagement.
Brevo: The Affordable All-in-One
Brevo (formerly Sendinblue) made its name by doing the opposite of Klaviyo on pricing — instead of charging by list size, Brevo charges by email sends. For teams with large lists but modest send volumes, that model is significantly cheaper. Brevo has grown its channel footprint to include SMS, live chat, and web push (powered by Wonderpush), making it a genuine all-in-one option for teams that want to consolidate.
Where Brevo wins:
- Send-volume pricing is more affordable for teams with large lists who don’t send frequently. If you have 100,000 contacts but only email them twice a month, you’re not paying for the whole list.
- The breadth of channels under one roof is real. Email, SMS, web push, transactional email, and live chat from one billing relationship simplifies vendor management.
- Brevo’s transactional email is reliable and well-regarded for triggered sends like receipts and password resets.
- For European businesses, Brevo’s French-origin GDPR posture and EU data residency options are relevant.
Where Brevo has limits:
- Web push is delivered via Wonderpush, which means it’s not native to Brevo — it’s an integration layer. The depth of push functionality (advanced segmentation, behavior-triggered automations, cart abandonment via push) is shallower than a dedicated push platform.
- Brevo still requires an email address for its primary use cases. Web push via Wonderpush can reach anonymous visitors, but the configuration and campaign depth are more limited.
- Automations and eCommerce-specific flows are less data-deep than Klaviyo — Brevo works well for volume email and transactional sends but is less powerful for behavior-driven lifecycle marketing.
The honest summary: Brevo is excellent for cost-conscious teams consolidating tools and for businesses with strong transactional email needs. Its web push offering exists but is not its primary strength.
PushEngage: The Retention Channel That Doesn’t Wait for the Inbox
PushEngage is a different category from Klaviyo and Brevo. It is not an email tool and does not try to be. It is the retention channel that brings users back via web push notifications, mobile app push (iOS, Android, React Native, Flutter), and WhatsApp.
The core wedge is this: web push lands in seconds. Not when the user next opens email. Not when the SMS gets past the spam filter. Right now, in the notification tray, on the device they’re already using.
The second wedge: web push reaches anonymous visitors. A user who browsed your product pages, put items in a cart, and left without logging in — you can still bring them back. You don’t need an email address. You need a subscriber who clicked “Allow” on the notification prompt.
For a sense of what real push campaigns look like across categories, see these push notification examples.
Where PushEngage wins:
- Reaches anonymous visitors. This is the use case Klaviyo and Brevo simply cannot address. A browse abandonment campaign via web push recovers users who never gave you their email. A cart abandonment push sequence catches the user while the intent is still warm.
- Pays only for active subscribers. No list-size billing. No paying for subscribers who stopped engaging six months ago. If your list shrinks, your bill shrinks.
- No per-message pricing. Send a cart abandonment series of five notifications to 50,000 subscribers. The bill does not change per notification sent — you’re paying for the subscriber relationship, not the volume of messages.
- Speed. Web push lands within seconds of a trigger event. A user who just abandoned a cart can see a notification while the tab is still open in another window.
- Native plugins for WooCommerce, WordPress, and Shopify. PushEngage’s Klaviyo push notification integration shows exactly how it layers alongside email tools — you don’t have to choose between them.
- App push for mobile. Native SDKs for iOS, Android, React Native, and Flutter mean you can run the same behavioral automations in your app as on your website — from one platform.
- WhatsApp. The WhatsApp marketing channel adds a high-engagement, high-open-rate channel for international audiences and order-update flows.
- Built by Awesome Motive. The team behind WPForms, AIOSEO, OptinMonster, and MonsterInsights — 25,000+ businesses trust PushEngage across 150+ countries.
Where PushEngage has limits (be honest):
- PushEngage is not an email tool. If email campaigns are your primary retention lever, you still need a dedicated email platform.
- Web push subscribers are a separate list from your email list. Building a push subscriber base takes time and a solid opt-in strategy — just like building an email list.
- WhatsApp marketing is subject to Meta’s Business Messaging policies and template approval processes, which can be an operational overhead for teams new to the channel.
The honest summary: PushEngage is the right tool when you want to reach users faster than email, reach users who haven’t given you an email, and pay only for subscribers who are actually active. It is not a replacement for email — it is the retention channel email cannot be.
Which Should You Choose?
Choose Klaviyo if:
You are a Shopify or BigCommerce brand with a substantial email list and you want the deepest possible behavioral data tied to your email flows. You’re willing to pay list-size pricing because you’re getting meaningful lift from the depth of segmentation and personalization. Email and SMS are your primary channels.
Choose Brevo if:
You want email, SMS, and basic web push under one affordable bill and your primary concern is cost control. You’re not pushing the boundaries of behavioral email segmentation but you need reliable transactional and campaign email with a reasonable send-volume model. You’re EU-based or have data residency requirements.
Choose PushEngage if:
You want to recover revenue from users who never gave you an email address. You’re paying a per-message SMS bill or a list-size email bill that’s growing faster than your engagement. You’re running a WooCommerce or WordPress site and want a native plugin that installs in minutes. You want to reach users the moment they abandon — not tomorrow morning when they open email.
Or Use All Three
This is the real answer for many eCommerce teams.
Klaviyo handles your email list — the subscribers who opted into your newsletter, the post-purchase flow, the promotional calendar. PushEngage handles the users who visited but didn’t subscribe — the browse abandoners, the cart droppers, the window shoppers who hit your product pages three times. Brevo might cover your transactional email or replace Klaviyo if you need cost reduction.
Channels complement each other when they’re touching different audiences at different moments. Web push doesn’t cannibalize your email opens — it reaches the users your email never could, at a moment email cannot reach.
That’s the logic behind running PushEngage alongside your email tool rather than instead of it: you’re not consolidating channels, you’re adding one that was previously unavailable to you.
常见问题解答
Does PushEngage replace Klaviyo or Brevo?
No. PushEngage is a different retention channel — web push, app push, and WhatsApp — not an email tool. Klaviyo and Brevo are primarily email platforms. Many merchants run PushEngage alongside their email tool because web push reaches users Klaviyo and Brevo cannot reach: anonymous visitors who never opted in to email.
How is PushEngage pricing different from Klaviyo and Brevo?
Klaviyo prices by list size — you pay based on the number of contacts in your account whether they’re engaging or not. Brevo prices by email send volume. PushEngage prices by active subscribers — you pay only for subscribers who are actually active. If engagement drops and subscribers become inactive, you don’t keep paying for them.
Can I use PushEngage if I’m on WordPress or WooCommerce?
Yes. PushEngage has a native WordPress plugin on WordPress.org and a native WooCommerce integration for cart abandonment, browse abandonment, back-in-stock, and price drop alerts. No engineering ticket required.
Does PushEngage have a free trial?
PushEngage does not have a free trial. There is a free forever tier (1 site, up to 200 subscribers, 30 campaigns) that lets you get started at no cost. All paid plans — Business, Premium, Growth, and Enterprise — carry a 14-day money-back guarantee. If PushEngage isn’t the right fit within 14 days, you get a full refund, no questions asked.
Ready to Add the Retention Channel That Doesn’t Wait for Tomorrow’s Inbox?
Klaviyo and Brevo are strong email platforms. PushEngage is the retention channel for the users they can’t reach — anonymous visitors, mid-session drop-offs, and anyone who abandoned before opting in to your list.
You can start on the free forever tier or try any paid plan risk-free.
Try PushEngage Risk-Free for 14 Days — or Get Started Free and see web push working on your site today.
