A conversation thread refers to a string of connected messages or replies exchanged between people in a discussion. It's like following a single topic or subject throughout a conversation, where each message builds upon the previous ones.
Sentences with «conversation thread»
Secret conversations will not be integrated with the main conversation thread for that person. (pcworld.com)
Conversation threads did not work and all SMS messages filed under one contact's name. (berryreview.com)
You could also enable email notifications only for specific conversation threads if you're waiting for a response to something. (howtogeek.com)