OY Messenger seamlessly syncs across all of your devices and can be used on desktops, tablets and phones alike. You can send an unlimited amount of messages, photos, videos and files of any type (.doc, .zip, .pdf, etc.). Telegram groups have up to 1000 people and you can create channels to broadcast messages to an unlimited number of subscribers. Be sure to check our website for a list of OY Messenger apps for all platforms.