# Top 10 Knock Alternatives & Competitors **Average Rating:** 4.6/5 **Total Number of Reviews:** 147 The Notification Infrastructure Software solutions below are the most common alternatives that users and reviewers compare with Knock. Notification Infrastructure Software is a widely used technology, and many people are seeking simple, quick software solutions with campaign performance, segmentation, and personalization. Other important factors to consider when researching alternatives to Knock include features and customer service. The best overall Knock alternative is Courier. Other similar apps like Knock are SuprSend, OneSignal, MoEngage, and Customer.io. Knock alternatives can be found in [Notification Infrastructure Software](https://www.g2.com/categories/notification-infrastructure) but may also be in [Marketing Automation Software](https://www.g2.com/categories/marketing-automation) or [Push Notification Software](https://www.g2.com/categories/push-notification). ## Best Paid & Free Alternatives to Knock - [Courier](https://www.g2.com/products/courier/reviews) - [SuprSend](https://www.g2.com/products/suprsend/reviews) - [OneSignal](https://www.g2.com/products/onesignal/reviews) - [MoEngage](https://www.g2.com/products/moengage/reviews) - [Customer.io](https://www.g2.com/products/customer-io/reviews) - [Braze](https://www.g2.com/products/braze/reviews) - [CleverTap](https://www.g2.com/products/clevertap/reviews) - [Twilio SendGrid Email API](https://www.g2.com/products/twilio-sendgrid-email-api/reviews) - [Iterable](https://www.g2.com/products/iterable/reviews) - [Omnisend](https://www.g2.com/products/omnisend/reviews) ## Top 10 Alternatives to Knock Recently Reviewed By G2 Community Browse options below. Based on reviewer data, you can see how Knock stacks up to the competition, check reviews from current & previous users in industries like Computer Software, Accounting, and Human Resources, and find the best product for your business. ### 1. [Courier](https://www.g2.com/products/courier/reviews) By Courier **Average Rating:** 4.5/5 **Total Reviews:** 59 The fastest way to design and build notifications for you app Reviewers say compared to Knock, Courier is: - Slower to reach roi - More usable - Easier to set up Categories in common with Knock: [Notification Infrastructure](https://www.g2.com/categories/notification-infrastructure), [Push Notification](https://www.g2.com/categories/push-notification), [Transactional Email](https://www.g2.com/categories/transactional-email), [Proactive Notification](https://www.g2.com/categories/proactive-notification) **Compare:** [Knock vs Courier](https://www.g2.com/compare/courier-vs-knock-knock) **Compare Courier with other alternatives:** - [Courier vs SuprSend](https://www.g2.com/compare/courier-vs-suprsend) - [Courier vs OneSignal](https://www.g2.com/compare/courier-vs-onesignal) - [Courier vs MoEngage](https://www.g2.com/compare/courier-vs-moengage) - [Courier vs Customer.io](https://www.g2.com/compare/courier-vs-customer-io) - [Courier vs Braze](https://www.g2.com/compare/braze-vs-courier) - [Courier vs CleverTap](https://www.g2.com/compare/clevertap-vs-courier) - [Courier vs Twilio SendGrid Email API](https://www.g2.com/compare/courier-vs-twilio-sendgrid-email-api) - [Courier vs Iterable](https://www.g2.com/compare/courier-vs-iterable) - [Courier vs Omnisend](https://www.g2.com/compare/courier-vs-omnisend) ### 2. [SuprSend](https://www.g2.com/products/suprsend/reviews) By SuprSend **Average Rating:** 4.8/5 **Total Reviews:** 128 SuprSend is a powerful notification infrastructure to help companies set up, manage and scale product notifications across all channels. It provides developers and product managers with a centralized location to manage vendors, templates, analytics, and logs. And helps them to construct meaningful notifications no matter how complex - thereby enhancing the customer experience without the need for extensive in-house development. Reviewers say compared to Knock, SuprSend is: - More usable - Easier to set up - Better at meeting requirements Categories in common with Knock: [Notification Infrastructure](https://www.g2.com/categories/notification-infrastructure), [Push Notification](https://www.g2.com/categories/push-notification), [Transactional Email](https://www.g2.com/categories/transactional-email), [Proactive Notification](https://www.g2.com/categories/proactive-notification) **Compare:** [Knock vs SuprSend](https://www.g2.com/compare/knock-knock-vs-suprsend) **Compare SuprSend with other alternatives:** - [SuprSend vs Courier](https://www.g2.com/compare/courier-vs-suprsend) - [SuprSend vs OneSignal](https://www.g2.com/compare/onesignal-vs-suprsend) - [SuprSend vs MoEngage](https://www.g2.com/compare/moengage-vs-suprsend) - [SuprSend vs Customer.io](https://www.g2.com/compare/customer-io-vs-suprsend) - [SuprSend vs Braze](https://www.g2.com/compare/braze-vs-suprsend) - [SuprSend vs CleverTap](https://www.g2.com/compare/clevertap-vs-suprsend) - [SuprSend vs Twilio SendGrid Email API](https://www.g2.com/compare/suprsend-vs-twilio-sendgrid-email-api) - [SuprSend vs Iterable](https://www.g2.com/compare/iterable-vs-suprsend) - [SuprSend vs Omnisend](https://www.g2.com/compare/omnisend-vs-suprsend) ### 3. [OneSignal](https://www.g2.com/products/onesignal/reviews) By OneSignal **Average Rating:** 4.7/5 **Total Reviews:** 1,229 OneSignal is the market-leading omnichannel customer engagement platform for building customer relationships through personalized messaging across mobile and web push notifications, in-app messaging, SMS, and email. Reviewers say compared to Knock, OneSignal is: - Slower to reach roi - More usable - Easier to set up Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification), [Proactive Notification](https://www.g2.com/categories/proactive-notification) **Compare:** [Knock vs OneSignal](https://www.g2.com/compare/knock-knock-vs-onesignal) **Compare OneSignal with other alternatives:** - [OneSignal vs Courier](https://www.g2.com/compare/courier-vs-onesignal) - [OneSignal vs SuprSend](https://www.g2.com/compare/onesignal-vs-suprsend) - [OneSignal vs MoEngage](https://www.g2.com/compare/moengage-vs-onesignal) - [OneSignal vs Customer.io](https://www.g2.com/compare/customer-io-vs-onesignal) - [OneSignal vs Braze](https://www.g2.com/compare/braze-vs-onesignal) - [OneSignal vs CleverTap](https://www.g2.com/compare/clevertap-vs-onesignal) - [OneSignal vs Twilio SendGrid Email API](https://www.g2.com/compare/onesignal-vs-twilio-sendgrid-email-api) - [OneSignal vs Iterable](https://www.g2.com/compare/iterable-vs-onesignal) - [OneSignal vs Omnisend](https://www.g2.com/compare/omnisend-vs-onesignal) ### 4. [MoEngage](https://www.g2.com/products/moengage/reviews) By MoEngage **Average Rating:** 4.5/5 **Total Reviews:** 525 With MoEngage, companies can orchestrate campaigns across channels like push, email, in-app messaging, web push and sms, with auto-optimization towards higher conversions powered by machine learning. Reviewers say compared to Knock, MoEngage is: - Slower to reach roi - More expensive - More usable Categories in common with Knock: [Notification Infrastructure](https://www.g2.com/categories/notification-infrastructure), [Push Notification](https://www.g2.com/categories/push-notification), [Transactional Email](https://www.g2.com/categories/transactional-email), [Proactive Notification](https://www.g2.com/categories/proactive-notification) **Compare:** [Knock vs MoEngage](https://www.g2.com/compare/knock-knock-vs-moengage) **Compare MoEngage with other alternatives:** - [MoEngage vs Courier](https://www.g2.com/compare/courier-vs-moengage) - [MoEngage vs SuprSend](https://www.g2.com/compare/moengage-vs-suprsend) - [MoEngage vs OneSignal](https://www.g2.com/compare/moengage-vs-onesignal) - [MoEngage vs Customer.io](https://www.g2.com/compare/customer-io-vs-moengage) - [MoEngage vs Braze](https://www.g2.com/compare/braze-vs-moengage) - [MoEngage vs CleverTap](https://www.g2.com/compare/clevertap-vs-moengage) - [MoEngage vs Twilio SendGrid Email API](https://www.g2.com/compare/moengage-vs-twilio-sendgrid-email-api) - [MoEngage vs Iterable](https://www.g2.com/compare/iterable-vs-moengage) - [MoEngage vs Omnisend](https://www.g2.com/compare/moengage-vs-omnisend) ### 5. [Customer.io](https://www.g2.com/products/customer-io/reviews) By Customer.io **Average Rating:** 4.4/5 **Total Reviews:** 894 A platform for sending targeted messages. Reviewers say compared to Knock, Customer.io is: - Slower to reach roi Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification), [Transactional Email](https://www.g2.com/categories/transactional-email) **Compare:** [Knock vs Customer.io](https://www.g2.com/compare/customer-io-vs-knock-knock) **Compare Customer.io with other alternatives:** - [Customer.io vs Courier](https://www.g2.com/compare/courier-vs-customer-io) - [Customer.io vs SuprSend](https://www.g2.com/compare/customer-io-vs-suprsend) - [Customer.io vs OneSignal](https://www.g2.com/compare/customer-io-vs-onesignal) - [Customer.io vs MoEngage](https://www.g2.com/compare/customer-io-vs-moengage) - [Customer.io vs Braze](https://www.g2.com/compare/braze-vs-customer-io) - [Customer.io vs CleverTap](https://www.g2.com/compare/clevertap-vs-customer-io) - [Customer.io vs Twilio SendGrid Email API](https://www.g2.com/compare/customer-io-vs-twilio-sendgrid-email-api) - [Customer.io vs Iterable](https://www.g2.com/compare/customer-io-vs-iterable) - [Customer.io vs Omnisend](https://www.g2.com/compare/customer-io-vs-omnisend) ### 6. [Braze](https://www.g2.com/products/braze/reviews) By Braze **Average Rating:** 4.5/5 **Total Reviews:** 1,688 Create powerful customer engagement with ease, at any scale Reviewers say compared to Knock, Braze is: - Slower to reach roi - More expensive Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification) **Compare:** [Knock vs Braze](https://www.g2.com/compare/braze-vs-knock-knock) **Compare Braze with other alternatives:** - [Braze vs Courier](https://www.g2.com/compare/braze-vs-courier) - [Braze vs SuprSend](https://www.g2.com/compare/braze-vs-suprsend) - [Braze vs OneSignal](https://www.g2.com/compare/braze-vs-onesignal) - [Braze vs MoEngage](https://www.g2.com/compare/braze-vs-moengage) - [Braze vs Customer.io](https://www.g2.com/compare/braze-vs-customer-io) - [Braze vs CleverTap](https://www.g2.com/compare/braze-vs-clevertap) - [Braze vs Twilio SendGrid Email API](https://www.g2.com/compare/braze-vs-twilio-sendgrid-email-api) - [Braze vs Iterable](https://www.g2.com/compare/braze-vs-iterable) - [Braze vs Omnisend](https://www.g2.com/compare/braze-vs-omnisend) ### 7. [CleverTap](https://www.g2.com/products/clevertap/reviews) By CleverTap **Average Rating:** 4.6/5 **Total Reviews:** 670 CleverTap is the leading mobile marketing platform that helps marketers and growth teams understand, segment and engage their users for increased retention, customer lifetime value, and campaign ROI. Reviewers say compared to Knock, CleverTap is: - Slower to reach roi - More usable - More expensive Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification) **Compare:** [Knock vs CleverTap](https://www.g2.com/compare/clevertap-vs-knock-knock) **Compare CleverTap with other alternatives:** - [CleverTap vs Courier](https://www.g2.com/compare/clevertap-vs-courier) - [CleverTap vs SuprSend](https://www.g2.com/compare/clevertap-vs-suprsend) - [CleverTap vs OneSignal](https://www.g2.com/compare/clevertap-vs-onesignal) - [CleverTap vs MoEngage](https://www.g2.com/compare/clevertap-vs-moengage) - [CleverTap vs Customer.io](https://www.g2.com/compare/clevertap-vs-customer-io) - [CleverTap vs Braze](https://www.g2.com/compare/braze-vs-clevertap) - [CleverTap vs Twilio SendGrid Email API](https://www.g2.com/compare/clevertap-vs-twilio-sendgrid-email-api) - [CleverTap vs Iterable](https://www.g2.com/compare/clevertap-vs-iterable) - [CleverTap vs Omnisend](https://www.g2.com/compare/clevertap-vs-omnisend) ### 8. [Twilio SendGrid Email API](https://www.g2.com/products/twilio-sendgrid-email-api/reviews) By Twilio **Average Rating:** 4.0/5 **Total Reviews:** 368 Twilio SendGrid Email API- Integrate in minutes with our email API. Reviewers say compared to Knock, Twilio SendGrid Email API is: - Slower to reach roi Categories in common with Knock: [Transactional Email](https://www.g2.com/categories/transactional-email) **Compare:** [Knock vs Twilio SendGrid Email API](https://www.g2.com/compare/knock-knock-vs-twilio-sendgrid-email-api) **Compare Twilio SendGrid Email API with other alternatives:** - [Twilio SendGrid Email API vs Courier](https://www.g2.com/compare/courier-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs SuprSend](https://www.g2.com/compare/suprsend-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs OneSignal](https://www.g2.com/compare/onesignal-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs MoEngage](https://www.g2.com/compare/moengage-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs Customer.io](https://www.g2.com/compare/customer-io-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs Braze](https://www.g2.com/compare/braze-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs CleverTap](https://www.g2.com/compare/clevertap-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs Iterable](https://www.g2.com/compare/iterable-vs-twilio-sendgrid-email-api) - [Twilio SendGrid Email API vs Omnisend](https://www.g2.com/compare/omnisend-vs-twilio-sendgrid-email-api) ### 9. [Iterable](https://www.g2.com/products/iterable/reviews) By Iterable **Average Rating:** 4.4/5 **Total Reviews:** 825 Iterable empowers growth marketers to create world-class user engagement campaigns throughout the full lifecycle, and across all channels. Marketers segment users, build workflows, automate touchpoints, and test strategies at scale without engineering support. Reviewers say compared to Knock, Iterable is: - Slower to reach roi - More expensive Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification) **Compare:** [Knock vs Iterable](https://www.g2.com/compare/iterable-vs-knock-knock) **Compare Iterable with other alternatives:** - [Iterable vs Courier](https://www.g2.com/compare/courier-vs-iterable) - [Iterable vs SuprSend](https://www.g2.com/compare/iterable-vs-suprsend) - [Iterable vs OneSignal](https://www.g2.com/compare/iterable-vs-onesignal) - [Iterable vs MoEngage](https://www.g2.com/compare/iterable-vs-moengage) - [Iterable vs Customer.io](https://www.g2.com/compare/customer-io-vs-iterable) - [Iterable vs Braze](https://www.g2.com/compare/braze-vs-iterable) - [Iterable vs CleverTap](https://www.g2.com/compare/clevertap-vs-iterable) - [Iterable vs Twilio SendGrid Email API](https://www.g2.com/compare/iterable-vs-twilio-sendgrid-email-api) - [Iterable vs Omnisend](https://www.g2.com/compare/iterable-vs-omnisend) ### 10. [Omnisend](https://www.g2.com/products/omnisend/reviews) By Omnisend **Average Rating:** 4.6/5 **Total Reviews:** 1,258 Omnisend is an email & SMS marketing platform with a suite of features made specifically to help ecommerce stores grow their audience and sales faster. One-click integration with major ecommerce platforms, pre-made automation & email templates, and award-winning 24/7/365 live customer support make it easy for online merchants of any size to sell more — all without the exaggerated cost. Join more than 115,000 ecommerce brands that use Omnisend to grow their businesses on autopilot, converting their customers with quick-to-build, highly relevant emails & texts. Send newsletters and targeted email campaigns Create beautiful, shoppable emails in minutes using our drag-and-drop email builder and 350+ ready-made email templates. Add coupon codes, automatically pick & insert products, and automatically resend campaigns to non-openers – all without any tedious manual work! Drive sales on autopilot with ecommerce-focused automations Win (back) lost sales with pre-built workflows for cart abandonment, welcome series, transactional emails, and more. Get pre-built, revenue-generating automations running in minutes, or easily build your custom workflows using our no-code, drag-and-drop Automations Editor. Improve your targeting with smart segmentation Segment your customers based on their shopping behavior as well as other properties to improve conversions with well-targeted, personalized emails and texts. Create segments for high-value customers, for specific category/product shoppers, or those that need to be re-engaged and personalize your messaging. Combine email with SMS and more channels Add SMS push notifications, and product reviews right next to your emails using Omnisend’s all-in-one platform to provide a consistent, omnichannel customer experience. Save time and costs – there’s no need to pay for separate email, SMS, product reviews, and push apps anymore! Grow your email & SMS lists Collect new subscribers using our mobile-friendly, fully customizable forms. Choose from popups, signup boxes, landing pages, or a Wheel of Fortune to seamlessly collect email and/or SMS opt-ins. Capture your visitors with exit-intent forms and improve popup engagement using form targeting options, all available within Omnisend. Collect & highlight customer feedback with Product Reviews With Omnisend, your customers' reviews can live right where they can do the most good – alongside your own words in emails, texts, and popups, adding a perspective that only your customers can provide. Award-winning 24/7 support We give you stellar support and helpful advice anytime you need it, and we answer in under 4 minutes on average. We’re available 24/7/365. Start using Omnisend for free today. Omnisend invites Freelancers and Agencies to join the Omnisend partner program. This program is created to help Freelancers and Agencies accelerate their growth, win more clients and receive industry leading revenue share for referred and managed accounts. Check the link and join the program: https://www.omnisend.com/partners/ Reviewers say compared to Knock, Omnisend is: - Slower to reach roi - More usable - Easier to set up Categories in common with Knock: [Push Notification](https://www.g2.com/categories/push-notification), [Transactional Email](https://www.g2.com/categories/transactional-email) **Compare:** [Knock vs Omnisend](https://www.g2.com/compare/knock-knock-vs-omnisend) **Compare Omnisend with other alternatives:** - [Omnisend vs Courier](https://www.g2.com/compare/courier-vs-omnisend) - [Omnisend vs SuprSend](https://www.g2.com/compare/omnisend-vs-suprsend) - [Omnisend vs OneSignal](https://www.g2.com/compare/omnisend-vs-onesignal) - [Omnisend vs MoEngage](https://www.g2.com/compare/moengage-vs-omnisend) - [Omnisend vs Customer.io](https://www.g2.com/compare/customer-io-vs-omnisend) - [Omnisend vs Braze](https://www.g2.com/compare/braze-vs-omnisend) - [Omnisend vs CleverTap](https://www.g2.com/compare/clevertap-vs-omnisend) - [Omnisend vs Twilio SendGrid Email API](https://www.g2.com/compare/omnisend-vs-twilio-sendgrid-email-api) - [Omnisend vs Iterable](https://www.g2.com/compare/iterable-vs-omnisend) --- ## Knock Alternatives FAQs ### How does Knock compare to Courier? According to G2 data, [Knock](https://www.g2.com/products/knock-knock/reviews) and [Courier](https://www.g2.com/products/courier/reviews) both score equally on Meeting Requirements with a 9.0 average. However, Courier leads slightly in Usability (9.0 vs 8.7) and Ease of Setup (8.9 vs 8.7) by 0.3 and 0.2 points respectively. Knock outperforms Courier in Ease of Admin (9.0 vs 8.9) by 0.1 points and notably in Support (9.7 vs 9.5) by 0.2 points. Courier has a 0.2-point advantage in Ease of Doing Business With (9.7 vs 9.5). Knock has 146 reviews with an average rating of 4.6/5, while Courier has 59 reviews averaging 4.5/5. Knock users frequently praise its ease of use (39 mentions), robust notification capabilities (34 mentions), easy setup (28 mentions), and exceptional customer support (28 mentions). Knock also offers advanced features like preset template availability, multi-environment support with git-like commit workflows, and powerful workflow builders with batching and conditional logic. Users highlight Knock's flexibility in integrating with multiple providers and its developer-first design. Courier users appreciate its dynamic email creation with drag-and-drop design and multi-channel notification API. ### What are the best alternatives to Knock? The best alternatives to Knock include [Courier](https://www.g2.com/products/courier/reviews) (4.5/5 stars, 59 reviews), [SuprSend](https://www.g2.com/products/suprsend/reviews) (4.8/5 stars, 127 reviews), [OneSignal](https://www.g2.com/products/onesignal/reviews) (4.7/5 stars, 1196 reviews), and [MoEngage](https://www.g2.com/products/moengage/reviews) (4.5/5 stars, 524 reviews). These platforms are highly rated for ease of use, multi-channel notification management, and strong customer support, with SuprSend leading in overall rating and OneSignal having the largest review base. ### What features do alternatives offer that Knock does not? Alternatives to Knock offer features such as two-way messaging and voice messaging, which Knock currently lacks natively. ### Which Notification Infrastructure tools do reviewers recommend instead of Knock? Reviewers recommend [Courier](https://www.g2.com/products/courier/reviews) for its reliable delivery, ease of integration, and flexible notification design. [SuprSend](https://www.g2.com/products/suprsend/reviews) is favored for its centralized multi-channel notification management, developer-friendly APIs, and strong support, especially for multi-tenant environments. [OneSignal](https://www.g2.com/products/onesignal/reviews) is praised for its intuitive dashboard, powerful segmentation, and generous free tier, making it ideal for quick setup and real-time push notifications. [MoEngage](https://www.g2.com/products/moengage/reviews) is recommended for its advanced analytics, AI-driven personalization, and comprehensive multi-channel campaign orchestration. All alternatives offer features that enhance notification infrastructure beyond Knock’s current capabilities, particularly in two-way and voice messaging. ### Why do users choose Courier over Knock? Users choose [Courier](https://www.g2.com/products/courier/reviews) over [Knock](https://www.g2.com/products/knock-knock/reviews) primarily for its slightly higher Usability score (9.0 vs 8.7) and marginally easier setup experience (8.9 vs 8.7), reflecting a 0.3 and 0.2-point advantage respectively. Courier's drag-and-drop dynamic email design is highlighted as a key benefit, making it appealing for users seeking straightforward notification design without heavy developer involvement. Additionally, Courier scores 0.2 points higher in Ease of Doing Business With (9.7 vs 9.5), indicating smoother vendor interactions and purchasing processes. 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