Latest news, tips & tricks, customer cases, and in-depth technical posts

Get an insight into the process of getting started with RCS Business Messaging, including registering an ‘RCS agent’, which is a requirement before you can send RCS messages.

RCS Business Messaging is the biggest news in the messaging industry in years. Dive into 7 powerful use cases for RCS that show how brands can create extraordinary experiences directly in native messaging apps.

Get an insight into how we at GatewayAPI take data security and compliance seriously. We have just obtained an ISAE 3402 Type II statement, which documents our strong and effective security measures – and we are sharing it openly.

Discover how SMS reminders can cut no-show rates by 30–40% – and even more when combined with behavioural science strategies.

Read our guide on how to send SMS messages using GatewayAPI and the cURL coding language.

Learn about Telenor’s new tiered pricing structure in Norway and Denmark, which especially affects international Sender IDs.

Learn how we stay ahead of cyber threats with a range of advanced technical security measures.

Learn how GatewayAPI combines global connectivity and local expertise to deliver reliable communications worldwide.

Learn more about how we strategically and specifically work to keep GatewayAPI + the SMS industry secure.

Learn how SMS-based surveys can help companies improve their customer experience and drive growth.

ONLINECITY.IO, GatewayAPI’s parent company, was founded 25 years ago. Read more about its history as well as the guiding principles that have shaped the company since its inception.

Find out about how Sender ID registration works in Finland as well as the other Nordic countries.

SMS communication in particular proved to be of great importance and was used for a variety of purposes such as notifying close contacts.

Learn about the key differences between a CPaaS and a UCaaS platform and dive deeper into the future of business communication technologies.

RCS has been in the works for many, many years, and 2024 looks to be the year when the technology finally makes its big breakthrough. Get the latest update on this new and exciting technology! 

In this blog post, we will touch upon the benefits of WhatsApp as we see it and discuss how integrating WhatsApp into our suite of communication channels will provide you as a customer with new powerful communication capabilities.

Sending SMS messages to recipients all over the world is straightforward with GatewayAPI’s robust service. Learn how to integrate GatewayAPI SMS services into your application by using Python code.

Black Friday is the Olympian of retail events. Learn strategies to maximize your profits on the big shopping day via SMS marketing.

In this blog post, you can learn more about Artificially Inflated Traffic (AIT) and what you can do to protect yourself against it.

Read a detailed step-by-step guide on how to send SMS messages using the PHP coding language and our SMS API.

Learn how we protect your data and offer complete GDPR compliance, guaranteed by an annual ISAE 3000 audit. Gain insight into our data protection measures.

Learn how to send SMS messages using Java as well as GatewayAPI’s SMS API and the OkHttp library.

SMS marketing is one of the most effective and reliable ways to reach customers. Learn about five effective trends.

Unlock the potential of AI in SMS marketing by optimizing your SMS campaigns with ChatGPT.

Use SMS appointment reminders to reduce no-shows, improve satisfaction and save money – the return on investment is huge! 

Phishing via SMS is a growing problem worldwide. Read more about the effective security measures we have implemented to prevent fraudsters from using GatewayAPI to send SMS phishing.

Learn more about how you can combine Slack with SMS technology to enable frictionless SMS support via Slack.

Learn more about all the benefits of implementing SMS technology in your SaaS business. Acquire a new recurring source of revenue.

In this blog post, we’ll review what toll-free numbers (TFNs) are and what they can be used for, as well as how to get one.

Read about what you can do to protect your GatewayAPI account against scammers as well as the systems connected to your account.

At ONLINECITY.IO, the parent company of GatewayAPI, we take our responsibility seriously and strive to make the world a better place both locally and globally.

Explore the latest features of our sister platform RelationCity, and read more about the brand new and intuitive tools that make planning and sending SMS campaigns a breeze.

Read more about your options when you wish to send SMS traffic to the USA, as well as how to get started with a 10DLC number.

Read more about the importance of using 64 bit instead of using 32 bit when storing message IDs in your own system, as well as the importance of using text strings instead of numbers.

In this guide you can get an overview of a number of parameters that are good to keep in mind from the beginning when selecting an SMS gateway.

Send SMS marketing messages and SMS communication directly from your browser via our sister platform RelationCity.

Learn more about how you can get access to a EU setup at GatewayAPI and what it means for you as a customer.

Read more about SMS donations, SMS competitions, and SMS polls during live tv shows, as well as how our team can assist you.

Learn more about OCiD and its significance for you as a GatewayAPI user as well as its significance for our upcoming communication platforms.

In this blog post, we will dive into h0w our message class Secret Class precisely works, as well as what influence it has on data processing on behalf of our customers.

Read about the background for the large price increase on SMS traffic to Denmark, which the Danish telecom companies will implement on July 1, 2021.

Gain insight into how our team managed to ensure a perfect uptime of a staggering 100% throughout all of 2020.

We have put together a complete list with tips and ideas on how to get even more sales via SMS marketing on shopping-celebrations such as Black Friday, Cyber Monday, Singles’ Day etc.

What can virtual numbers be used for? Read our customer case on how virtual numbers helped bring popular Danish services to Greenland.

Learn more about the new version of our message router in detail and what benefits the upgrade has for you as well as us.

Learn how a new GDPR-ruling (also known as the Schrems II-case) can have an impact on your choice of an SMS gateway and other IT services.

Read about how you can set up a SMS donation solution quickly by combining GatewayAPI and the automation platform Make.

Our in-house GDPR-specialist, Dennis Grade, has written a detailed account of how we handle your data and make sure that the data protection and compliance are rock-solid.

SMS messages are an effective tool for disseminating critical information instantly. Learn how our platform is particularly well-suited for this task.

By combining GatewayAPI with Integromat (Make), you can set up SMS automation between hundreds of services with no coding experience whatsoever.

GatewayAPI is part of the RCS project. Read more about the prospects of this new exciting messaging technology as well as some of the first use cases.

The SMS is a powerful communication tool that can be used by libraries to send notifications and reminders to borrowers. Learn how to set it up here.

Read in detail how we moved GatewayAPI to the Google Cloud Platform (GCP) via Kubernetes as well as our journey to go fully Cloud Native.

Read an update on the new exciting RCS technology that will give companies a whole set of new tools they can communicate with their customers with.

Learn how to use the SMPP protocol, which is a way to send huge volumes of SMS messages extremely quickly and reliably.

Customer case with the Danish company, Minuba. Learn how they have benefitted from integrating our SMS services into their CRM platform.

Read about our safety measures to stop illegal SMS traffic. These include verification processes, a scanning system and whitelisting of URLs.

Customer case with the digital law firm, NEMADVOKAT. Read about how SMS messages drastically improved their interaction rates.

As the title says: You can learn everything you need to know about virtual numbers and keywords for A2P SMS communication in this blog post.

The GatewayAPI Standard Class is suitable for most, whereas the Premium Class suits those who seek additional functionalities such as encryption.

When your SMS messages are not delivered, it is often due to one of the same four reasons. Learn more about them in this blog post.

Want to keep hackers out of your WordPress installation? Then our two-factor security SMS plugin might just be the right choice for you.

Read a technical step-by-step guide on how to integrate GatewayAPI with Cicero Library Management System at your library.

Read about our setup as well as our daily operations, which are aimed at making sure that the security and uptime of GatewayAPI is sky-high at all times.

Read an update on the new exciting RCS technology that will give companies a whole set of new tools they can communicate with their customers with.

The Danish Red Cross uses GatewayAPI to manage SMS broadcasts and SMS donations. Read the case for inspiration on how to utilise the SMS technology.

Learn how to set up email to SMS and SMS to email in this guide, and get inspiration on how to use this technology for different purposes.

Customer case with the company Realkreditkonsulenten, where the company explains how they use GatewayAPI’s SMS services as an alternative to building an app.

Customer case with the world-renowned Roskilde Festival. Read about how the festival used SMS-technology to supplement their Roskilde Festival debit card.

Step-by-step guide on how to set up SMS communication by integrating Zendesk with GatewayAPI. Offer your customers an even better service.

Read our tips for ways to improve your customer satisfaction by using different SMS services. Included with a list of do’s and don’ts.

Read about our journey from upstart, to BETA to fully-developed with customers all over the world, sending millions of SMS messages every month.

Learn how to integrate PRTG Network Monitor with GatewayAPI to enable SMS notifications, giving you an easy way to always know the status of your servers.

The post covers the RCS technology with a discussion of the strengths and weaknesses of this new technology that is poised to be the next generation of SMS.

Our WordPress plugin has been upgraded! Read about the five new major features that have been added to enhance your experience with the plugin.

In this post we explain how we deliver your SMS messages, the difference between the Standard and Premium class as well as why we do not offer “Bulk SMS”.

Customer case with Blue Idea, whose service specialises in the distribution of critical internal and external information in a wide range of organisations.

In this how-to guide for developers, we will show you, step-by-step, how easy it is to set up SMS two-factor authentication with GatewayAPI.

Read about the technical aspect of how you can receive a question via SMS, query WolframAlpha for a reply and then respond via SMS.

This blog post guides you through the simple process of setting up OMS to send SMS alerts via GatewayAPI.

This post addresses the ‘what’, ‘why’ and ‘how’ that makes our API so different from your typical Kannel integration.

Read more about our free GatewayAPI WordPress-plugin, enabling you to send SMS messages to your customers straight from WordPress.