WhatsApp Metrics vs Other Platforms: A Practical Guide for Ecommerce

What do WhatsApp metrics actually tell us compared to other channels?

In short: WhatsApp records average open rates between 85% and 95%, compared to 20–25% for email marketing and 30–35% for SMS. The click-through rate (CTR) on WhatsApp messages with an explicit CTA sits between 15% and 35%, while email rarely exceeds 3–5% and organic social media stays below 2%. For an ecommerce business, this translates into a concrete operational advantage: fewer messages sent to achieve the same number of conversions, lower cost per acquisition, and a much shorter reading window — most WhatsApp messages are read within 3 minutes of delivery. The comparison is not just about absolute numbers but also about interaction quality: WhatsApp generates direct replies, while email and social primarily produce passive impressions. These figures fundamentally change how a marketing funnel should be planned.

WhatsApp Business API metrics must be read in the right context. Not all messages perform equally: notification templates — order confirmations, shipping updates, cart recovery — behave differently from promotional messages. An order confirmation message has an open rate close to 100% because the user is actively expecting it, while a cold promotional campaign may drop to 60–70%. This is not a flaw in the channel; it is a characteristic that demands precise segmentation and correct timing.

Cross-platform comparisons only become useful when the same actions are measured on the same audience. An ecommerce store using WhatsApp for cart recovery and email for newsletters is not comparing equivalent channels — it is using different tools for different goals. A valid comparative analysis requires A/B tests on the same segment, with the same message adapted to each channel format, and conversion measurement within the same attribution window.

How is open rate measured on WhatsApp compared to email?

Open rate on WhatsApp is structurally different from email open rate. On WhatsApp, a message is considered 'read' when the double blue tick appears — meaning the user has actually opened the conversation. In email marketing, open rate is based on the loading of an invisible tracking pixel, a method that has become increasingly unreliable following privacy protections introduced by Apple Mail and Gmail. This means the 20–25% open rate reported by email is often over- or under-estimated depending on the mail client, while the WhatsApp figure is much closer to reality.

A second factor to consider is the nature of the notification. WhatsApp delivers a push notification to the mobile device with a text preview, creating a perceived urgency far higher than an email landing in an already crowded inbox. The average user receives dozens of emails per day and hundreds per week, while WhatsApp messages are still perceived as personal and priority communications. This perception is reflected directly in open rate data.

For ecommerce businesses using Kuba Labs, the open rate of messages sent via WhatsApp Business API is tracked in real time inside the dashboard. Data can be segmented by template type, audience segment and send time, providing a granular view that email marketing rarely delivers with the same immediacy. A direct comparison with email campaigns from the same period becomes a concrete exercise rather than a theoretical one.

• WhatsApp open rate: 85–95% (verifiable double blue tick)
• Email open rate: 20–25% (pixel tracking, often inaccurate)
• SMS open rate: 30–35% (high open rate but low CTR)
• Average WhatsApp read time: within 3 minutes of delivery
• Average email read time: 6–12 hours after delivery

Which conversion metrics set WhatsApp apart from SMS and social media?

Conversion rate is the metric that most clearly differentiates WhatsApp from other channels in an ecommerce context. A cart recovery message sent via WhatsApp converts an average of 10–20% of recipients who open it, compared to 5–8% for email and 2–4% for SMS. Social media, in terms of direct conversion from a single post or ad, rarely exceeds 1–2% on organic traffic. These figures vary by sector, average product price and copy quality, but the direction is consistent.

The structural difference lies in the conversational context. WhatsApp is a two-way channel: the user can reply, ask questions and receive immediate assistance without leaving the app. This reduces friction in the purchase process. A customer who has a question about sizing or a delivery date can resolve it in seconds, whereas with email they would need to wait for a reply or search for information elsewhere — risking abandonment. Conversion is not just about an effective message; it is about removing obstacles at the decisive moment.

SMS has relatively high open rates but low conversions because it lacks interactivity: it does not natively support product images, clickable CTA buttons or trackable links. Social media has potentially enormous reach but low conversion because the user is in passive browsing mode, not active buying mode. WhatsApp reaches the user in a high-attention context with already partially formed purchase intent, especially in cart recovery or post-purchase follow-up scenarios.

• WhatsApp cart recovery conversion: 10–20%
• Email cart recovery conversion: 5–8%
• Promotional SMS conversion: 2–4%
• Organic social media conversion: 1–2%
• WhatsApp conversion with assisted reply: up to 25–30%

How does cost per conversion compare between WhatsApp and other channels?

Cost per conversion is the most relevant economic metric for an ecommerce business. On WhatsApp Business API, the cost consists of two components: the platform cost and Meta conversation costs. With Kuba Labs, Meta costs are included in the subscription, which starts at €9 per month for Tier 0 and scales with a model based on revenue generated — approximately 3% of orders attributed to Kuba. This means costs grow only when results grow, a very different model from email marketing where you pay per number of contacts regardless of conversions.

Email marketing has apparently low costs: major platforms such as Mailchimp, Klaviyo and Brevo charge monthly fees based on contact count or send volume. But when you calculate the actual cost per conversion — accounting for real open rates and CTR — the economic advantage shrinks significantly. An ecommerce store with 10,000 email contacts converting at 1% on a campaign gets 100 purchases. The same store with 3,000 active WhatsApp contacts converting at 12% gets 360 purchases from an audience three times smaller.

SMS carries per-message costs ranging from €0.05 to €0.15 depending on the provider and destination country. For mass campaigns, costs accumulate quickly and ROI is often lower than WhatsApp because the interactive features that drive conversion are absent. Paid social media — Meta Ads, Google Ads — has cost-per-click figures that vary enormously by sector, but the average cost per customer acquisition is generally higher than WhatsApp for audiences that have already been acquired.

Why is CTR on WhatsApp structurally higher?

Click-through rate on WhatsApp is higher for both technical and behavioural reasons. On the technical side, WhatsApp Business API messages support native CTA buttons — up to three per message — trackable links, product images and carousels. The user does not need to copy a link, open a browser and navigate: the path from message to product page is reduced to a single tap. This friction reduction translates directly into higher CTR compared to email, where the link is often buried in body text or inside a button that requires scrolling.

From a behavioural standpoint, WhatsApp is associated with personal and relevant communications. When a brand sends a WhatsApp message, the user perceives it as more urgent and personal than a newsletter. This effect diminishes over time if the brand overuses the channel with irrelevant messages, but for ecommerce businesses using WhatsApp with precise segmentation — customers who abandoned a specific cart, VIP customers with dedicated offers, customers with delayed orders — perceived relevance stays high and CTR remains elevated.

An often underestimated factor is the mobile-first context. WhatsApp is used almost exclusively on mobile, and mobile purchasing behaviour has changed radically in recent years. Users are accustomed to completing purchases in a few taps, and a WhatsApp message with a CTA button leading directly to a pre-filled checkout leverages this behaviour optimally. Email, even when mobile-optimised, requires more steps and more time — and every additional step is an opportunity for abandonment.

• WhatsApp CTR with CTA button: 15–35%
• Average email marketing CTR: 3–5%
• SMS CTR with link: 5–8%
• Organic social media CTR: 0.5–2%
• WhatsApp CTR on segmented campaigns: up to 40%

When should you use WhatsApp instead of email or SMS?

WhatsApp is the most effective channel in three specific scenarios: abandoned cart recovery, post-purchase communications (tracking, feedback, upsell) and real-time customer support. In these cases, reading speed and the two-way nature of the channel make the difference between a conversion and a missed opportunity. Email remains better suited for long-form communications — editorial newsletters, reports, educational content — where the user wants to read at their own pace and archive the content.

SMS is still useful for critical notifications where deliverability must be guaranteed regardless of internet connectivity: OTPs, security alerts, appointment confirmations in sectors where WhatsApp is not universally adopted. But for the majority of ecommerce marketing use cases, WhatsApp offers a superior cost-effectiveness ratio thanks to the combination of high open rate, elevated CTR and conversational capability.

The choice of channel should not be exclusive. A mature ecommerce operation uses WhatsApp for high-intent moments — abandoned cart, post-purchase, personalised promotions — and email for long-term nurturing and editorial content. The key is not to duplicate the same messages across all channels, but to assign each channel the type of communication for which it is structurally most effective. Kuba Labs allows WhatsApp to be integrated into the existing flow without replacing email, but complementing it at the decisive moments.

Which KPIs should you monitor to evaluate WhatsApp performance over time?

The core KPIs for WhatsApp Business API in an ecommerce context are: delivery rate (percentage of messages delivered out of total sent), read rate (percentage of messages read), CTR (clicks on links or CTA buttons), conversion rate (completed purchases attributed to the message), revenue per message (revenue generated divided by number of messages sent) and opt-out rate (percentage of users who block or unsubscribe). The last metric is particularly important: an opt-out rate above 2–3% signals relevance problems or excessive frequency.

Revenue per message is the most useful metric for comparing WhatsApp with other channels in economic terms. If a WhatsApp message generates an average of €2.50 in revenue and an email generates €0.40, the comparison is immediate without needing to analyse open rate and CTR separately. This aggregated metric simplifies budget decisions and makes it easier to justify the investment in WhatsApp Business API even to non-technical stakeholders.

Monitoring over time reveals seasonal patterns and audience behaviour trends. An ecommerce business using Kuba Labs can see how performance varies between promotional periods — Black Friday, sales — and ordinary periods, and calibrate message frequency and type accordingly. The Kuba Labs dashboard aggregates this data in real time, enabling rapid optimisations without the need to export data and build manual reports.

• Delivery rate: target >98%
• Read rate: target >80%
• CTR: target >15% for segmented campaigns
• Conversion rate: target >8% for cart recovery
• Opt-out rate: attention threshold >2%
• Revenue per message: aggregated KPI for cross-channel comparison

How to set up a correct cross-channel comparison in your own strategy

A methodologically sound comparison between WhatsApp and other channels requires three conditions: the same audience segment, the same conversion objective and the same attribution time window. Testing WhatsApp on cart recovery and email on a newsletter is not a valid comparison. The correct test is: the same segment of customers with an abandoned cart, half receiving the WhatsApp message and half receiving the email, with conversion measured in the following 48 hours. Only then are the data comparable and actionable.

A common mistake is comparing channels only on send costs without considering the value generated. An SMS costs €0.08 and converts at 2%; a WhatsApp message costs more but converts at 12%. The cost per conversion for WhatsApp is lower even though the cost per message is higher. This calculation must be made systematically for every campaign type — not just once — because performance varies with the audience, the product and the time of year.

The cross-channel metrics comparison is not an academic exercise: it serves to reallocate budget towards the channels that generate the most value for every euro invested. For an ecommerce business evaluating WhatsApp Business API, the practical starting point is to activate Kuba Labs on a single high-impact flow — cart recovery or order confirmation with upsell — measure performance for 30 to 60 days and compare it with the channel previously used for the same objective. The data collected in this period is sufficient to make informed decisions about expanding the WhatsApp strategy.