Julia Matuszewska

TL;DR: Push or SMS? There is no single channel that works best in every scenario. Push notifications are a natural choice when you are communicating with app users...

TL;DR: If you're wondering how to schedule a text message, the good news is that both iPhone (iOS 18 and later) and most Android phones let you do it without installing...

TL;DR: SMS spoofing is a phishing attack carried out over text message, also known as smishing. Scammers impersonate a courier, a bank, an online store, or a government...

TL;DR: SMS opt-in is the explicit permission a customer gives before receiving marketing text messages, while SMS opt-out is their right to withdraw that permission...

TL;DR: OTP stands for one-time password (or one-time passcode), an autogenerated code that's valid for a single login or transaction. OTP codes come in two types,...

TL;DR: Email address validation checks whether an address is correctly formatted, connected to a live domain, and capable of receiving messages. For high-volume...

TL;DR: SMS is a text-only format capped at 160 characters per segment. MMS extends it with images, GIFs, video, and longer text, but costs roughly 3x more and requires...

TL;DR:  As of May 11, 2026, RCS messages between iPhone and Android can be end-to-end encrypted for the first time. The feature launched in beta with iOS...

TL;DR: MessageFlow is a CPaaS (Communication Platform as a Service) that enables mobile applications to add SMS, email, push notifications, RCS, and OTT messaging...