Knock
Knock provides the API and workflow engine for building product notifications. Teams define notification logic in Knock's workflow editor and deliver to email, push, Slack, SMS, and in-app simultaneously. It handles preferences, batching, and digests so engineers never have to build notification plumbing again.
- Location
- New York, USA
- Raised
- $12M
- Stage
- Series A
- Founded
- 2021
- Category
- Dev Tools
- Funding
- VC-backed
- Team
- 11–50
Funding figures as of Jul 2025 · not independently verified
Founders of Knock
- Sam Seely
- Chris Bell
Investors backing Knock
- Craft Ventures
- Basis Set
Frequently asked questions
What does Knock do?
Knock provides the API and workflow engine for building product notifications. Teams define notification logic in Knock's workflow editor and deliver to email, push, Slack, SMS, and in-app simultaneously. It handles preferences, batching, and digests so engineers never have to build notification plumbing again.
Where is Knock based?
Knock is based in New York, USA.
When was Knock founded?
Knock was founded in 2021.
How much has Knock raised?
Knock has raised $12M in their Series A round as of Jul 2025.
Who founded Knock?
Knock was founded by Sam Seely, Chris Bell.
Who has invested in Knock?
Knock is backed by Craft Ventures, Basis Set.
How Knock would pitch themselves
○ Auto-generated01Target customer
Developers — the core audience Knock's product is built around.
02Problem they solve
Knock provides the API and workflow engine for building product notifications. Teams define notification logic in Knock's workflow editor and deliver to email, push, Slack, SMS, and in-app simultaneously. It handles pre… The category has historically been served by tools that miss the modern workflow this product is built around.
03Key differentiator
Knock differentiates on flexible notification infrastructure for developers. Backed by Craft Ventures + Basis Set, $12M raised — the company has resources + validation to compound this thesis. Founded by Sam Seely + team.
04Go-to-market strategy
Series-A scaling stage — building outbound sales motion, hiring first AEs, layering on customer success. Mix of PLG (where the product allows) + direct sales for higher-ACV deals.