Cross-channel customer engagement infrastructure for building lifecycle and transactional messaging workflows.
Knock is customer engagement infrastructure for product and engineering teams that need to send lifecycle and transactional messages. It provides a workflow builder for orchestrating email, in-app, push, SMS, and chat messages, plus broadcasts, in-app guides such as banners and modals, and reusable templates with brand layouts. An MCP server and CLI let agents and developers build flows from prompts. Typical use cases include onboarding journeys, trial ending notices, win-back sequences, NPS surveys, and failed payment alerts. The page shows a sign-up and demo option, with pricing listed separately.
Free
$250/mo
Customcontact sales
Prices in USD, as shown by knock.app. Source: pricing page. Last checked October 30, 2026.
Copy the prompt below and paste it into the agent you already use. It has the plans and prices from this page and asks you the right questions first.
I want to decide whether Knock (knock.app) is the right tool and which plan to pick. Below is what the StableMRR pricing directory read from Knock's own pricing page (last checked 2026-10-30). It can be out of date, so treat it as a starting point. Category: Marketing / Email marketing What it does: Cross-channel customer engagement infrastructure for building lifecycle and transactional messaging workflows. Plans: - Free: Free. Limits: Messages sent up to 10,000, Guide recipients up to 500, Agent credits up to 500. Includes: Unlimited workflows, Unlimited broadcasts, Unlimited in-app guides, Unlimited delivery channels, Unlimited stored profiles - Starter: $250/mo. Limits: Messages sent 50,000 then $0.005/ea, Guide recipients 2,500 then $0.05/ea, Agent credits 2,000 then $0.01 per credit. Includes: Everything in Free, Remove Knock branding, Email client previews, Priority email support - Enterprise: Contact sales. Includes: Custom roles and permissions, Per-customer branding and preferences, Stream observability and analytics data, SAML 2.0 SSO, Directory sync (SCIM) Alternatives in the directory: Acumbamail, AddEvent, Bento, Bounceless Pricing page: https://knock.app/pricing Directory listing: https://stablemrr.com/p/knock-app First ask me three short questions about my team size, budget and what I need it for. Then recommend one plan, tell me what could make it a bad fit, and compare it with the alternatives. Finish with what I should check on the vendor's site before I pay.
No price changes recorded since we started tracking on October 30, 2026.
| Product | Category | Free plan | Paid from | Plans | Checked |
|---|---|---|---|---|---|
| AcumbamailEmail and SMS marketing platform for creating campaigns, landing pages, websites and surveys from one tool. | Email marketing | Yes | - | 4 | Oct 29, 2026 |
| AddEventLets users add events to their calendars and helps organizers share events, collect RSVPs, and send reminders. | Email marketing | Yes | $36/mo | 4 | Oct 29, 2026 |
| BentoEmail marketing platform for campaigns, automations and transactional email with pre-send checks and delivery logs. | Email marketing | No | $29/mo | 3 | Oct 29, 2026 |
| BouncelessEmail verification service that checks addresses for invalid and risky contacts before sending campaigns. | Email marketing | Yes | $19/mo | 5 | Oct 30, 2026 |
| BybrandWeb app for centrally creating, deploying and managing branded HTML email signatures for employees. | Email marketing | No | $8/mo | 1 | Oct 30, 2026 |
Price changes and new tools, once or twice a month. No pitches, unsubscribe in one click.
How this page was made. Plans and prices are read automatically from knock.app's public pricing page, checked against the page text, and re-checked about every week. Method. Something wrong? Tell us.
