This can be done via a Telegram bot. Advantages include.
* Completely free, for any number of users. Great if you want i.e. internal notifications in a small, underfunded organization, or even 2FA codes. This might not be the best option security-wise, but has a lot of advantages if you want to prevent intentional account sharing, for example.
* Syncs across all platforms, including your own (the Telegram client API is available free of charge, although it is not easy to use)
* Extremely simple API, to the point of being able to play with it in a browser or via CURL. This is in contrast to the client API, which doesn't even use HTTP and runs on top of custom crypto protocols.
* All the features you might expect from a messaging service, including file attachments, receiving user input (for quickly dealing with alerts from your phone), muting specific notification bots, including for specific amounts of time, full message history etc.
* Completely free, for any number of users. Great if you want i.e. internal notifications in a small, underfunded organization, or even 2FA codes. This might not be the best option security-wise, but has a lot of advantages if you want to prevent intentional account sharing, for example.
* Syncs across all platforms, including your own (the Telegram client API is available free of charge, although it is not easy to use)
* Extremely simple API, to the point of being able to play with it in a browser or via CURL. This is in contrast to the client API, which doesn't even use HTTP and runs on top of custom crypto protocols.
* All the features you might expect from a messaging service, including file attachments, receiving user input (for quickly dealing with alerts from your phone), muting specific notification bots, including for specific amounts of time, full message history etc.