"Inbox messages" refers to the messages or emails that you receive and store in your email inbox. It is the section of your email account where all the new and received messages are stored for you to read and respond to. Full definition
Once you're ready to chat online, you can do this by inbox messaging or more real time instant chat if they are currently online. (top10bestdatingsites.com)
The website offers many useful features such as inbox messaging and instant messaging to make communication easier. (top20seniordatingsites.com)
All the best sites will have inbox messaging which is similar to email and a great place to start. (top10bestdatingsites.com)