
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.

We are excited about solving customer’s complex accounting, distribution, POS, Payroll and mobiles sales application problems.

Which is more popular?
Flex Software might be a bit more popular than Courier. We know about 3 links to it since March 2021 and only 3 links to Courier.
Website, pricing, platforms and company facts side by side.
|
|
|
|
|---|---|---|
| Website | courier.com | flexsoftware.com.my |
| Pricing | — | |
| Company | Startup from the United States · 2019 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Courier yet.
Flex Software is an accounting software company that is developing a software solution for Insurance Agents. Our product is called SAMS (Smart Agent Management System). The software will be cloud based online Customer Relationship Management for Life and General Insurance Agents. The platform...
What each product offers, as listed by its team.


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


No analysis of Courier yet.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
The Courier.com Notifications API Demo
No Flex Software videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Courier and Flex Software. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


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...
We have no reviews of Flex Software yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


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
Flex Software is the Best Accounting Software Companies in Malaysia that provides specialised IT services, for individual companies with specialised Hardware or Software product requirements while making every effort to provide the best... Source: over 3 years ago
Flexsoftware is a comprehensive and reliable accounting software based in Malaysia. It provides a range of features to help businesses track their financials more efficiently. Users benefit from intuitive controls and the ability to... Source: almost 4 years ago
Flex Software is the best online Accounting Software in Malaysia for Small, Mid-size and Large Businesses at Best Prices. It is easy and user-friendly accounting software to manage your business. Customers have different needs and Flex... Source: almost 4 years ago
When comparing Courier and Flex Software, you can also consider the following products.

The ultimate library for managing multi-channel transactional notifications with a single API.
Compare Novu to Courier or Flex Software:

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.
Compare SuprSend to Courier or Flex Software:

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.
Compare OneSignal to Courier or Flex Software:

Power your product notifications with Segment and Hightouch.
Compare Knock App to Courier or Flex Software:

Your app needs a notification inbox – with real-time sync, web & mobile push, and a UI that matches your brand.
Compare MagicBell to Courier or Flex Software:
