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Knock vs Lettr

See how their public offers line up before you choose your own position. Prices stay in the currency, billing schedule, and charged unit each vendor publishes.

Knock

See full pricing history

USD · US · source: knock.app

Plan Pricing Charged by Offer type
Developer
Free

$0/month

 Flat · monthly subscription Standalone · Free
Starter
USD 250 monthly

$250/month including 50,000 messages; then $0.005/message

 Usage · monthly platform fee plus message usage Standalone · Usage based
Enterprise
Contact sales

Contact us

 Flat · monthly subscription Standalone · Contact sales

Lettr

See full pricing history

USD · US · source: lettr.com

Plan Pricing Charged by Offer type
Free
Free

$0 /mo

 Flat Standalone · Free
Pro
USD 15 monthly

$15 /mo

 Flat Standalone · Fixed
Business
USD 110 monthly

$110 /mo

 Flat Standalone · Fixed
Enterprise
Contact sales

Contact sales

 Flat Standalone · Contact sales

What each plan includes

Feature names follow each vendor’s own pricing page, so verify the wording before treating them as exact equivalents.

Knock

Developer

Official plan card

Messages

10,000/month

Limited

Official plan card

Notification workflows

Unlimited

Limited

Official plan card

Delivery channels

Unlimited

Limited

Starter

Official plan card

Messages

50,000/month included

Limited

Official plan card

Additional messages

$0.005 each

Limited

Official plan card

Guides active users

2,500

Limited

Enterprise

Official plan card

Volume discounts

Included

Official plan card

Custom roles and permissions

Included

Official plan card

Enterprise controls

Included

Lettr

Free

Highlights

Monthly emails

3,000

Included

Highlights

Sending domains

1

Included

Highlights

Data retention

7 days

Included

Pro

Highlights

Monthly emails

50,000

Included

Highlights

Sending domains

10

Included

Highlights

Data retention

30 days

Included

Business

Highlights

Monthly emails

200,000

Included

Highlights

Sending domains

Unlimited

Included

Highlights

Dedicated IPs

Add-on

Included

Enterprise

Highlights

Monthly emails

Unlimited

Included

Highlights

SSO/SAML

Included

Highlights

SLA guarantee

Included

How their prices changed

Each dated row shows the public prices observed when that vendor’s pricing page changed.

Knock

  1. Source
    • Developer: Free
    • Starter: USD 250 monthly
    • Enterprise: Contact sales

Lettr

  1. Source
    • Free: Free
    • Pro: USD 15 monthly
    • Business: USD 110 monthly
    • Enterprise: Contact sales