
YieldStack
CBRE Group
Jones Lang LaSalle
Online platform for commercial real estate loans

Novu
SuprSend
OneSignal
Knock App
MagicBell
Resend
Twilio
Courier is a notification API built for developers. Design once, and deliver to any channel – email, Slack, SMS, push, and more – all through a single API.

Which is more popular?
Based on our record, Courier seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | stacksource.com | courier.com |
| Pricing | — | |
| Company | — | Startup from the United States · 2019 |
| Listed in |
What each product offers, as listed by its team.


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An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
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Walkthroughs and reviews on video.
New StackSource Lender Interface
The Courier.com Notifications API Demo
How often each product is chosen within a category, 0–100% relative to the other.


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Courier follows the Design Once Deliver to Many approaches, which makes it possible to design notifications using a single API and deliver them to several channels such as push notifications, direct messages for Slack...
Recommendations tracked on public social media and blogs since March 2021.


Tracking StackSource since May 2023.
Background: I'm the solo founder of Courier (courier.com). We build APIs that help developers easily build notifications for their products for any channel - email, SMS, Slack, push, inbox, etc. These days we're ~40 people, Series B,... Source: over 3 years ago
Roll your own like me so far, or do you use 3rd-party notification tools like Courier or Knock? Source: over 3 years ago
Courier is ideal for this kind of application since it makes it simple to integrate notification systems. We will be using the Courier API to send email notifications for now, but it is quite easy to extend it to use SMS or other... - Source: dev.to / almost 4 years ago
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AI-native commercial mortgage brokerage. One submission, lender matching, and human support through closing. No upfront fees.
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CBRE Group, Inc. is a holding company that conducts all of its operations through its indirect subsidiaries
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SuprSend is notification infrastructure that lets engineering, product, and growth teams send notifications across email, SMS, WhatsApp, mobile push, web push, in-app inbox, Slack, and Microsoft Teams from one platform.
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Jones Lang LaSalle, a financial and professional services firm, specializes in commercial real estate services and investment management.
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Customer engagement platform used by over 1 million developers and marketers; the fastest and most reliable way to send mobile and web push notifications, in-app messages, emails, and SMS.
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