Businesses and developers have the option to show you a welcome message when you enter a new Direct Message conversation, which may include quick reply prompts with specific instructions to help streamline your communication. The welcome message you see may be tailored for you, including based on how you entered the conversation. For example, if you click or tap on a link or button in a Tweet to go to Direct Messages, you may see a customized welcome message to continue the topic or conversation.
You might also see messages from businesses or developers that appear different than most Direct Messages. This can include, but is not limited to, messages with a list of predefined options for you to choose from.
Note: Businesses and developers will not know you saw their welcome message unless you respond, and the fact that you saw the welcome message does not mean the account can message you. Unless you have enabled the option to Receive Direct Messages from anyone, you must send them a message or follow them before they can message you back.