Gmail: Creating Meaningful Subject Lines

Because Gmail threads emails into a single conversation, it is important to ensure that your subject lines are meaningful.  Writing meaningful subject lines are important for you, your recipients who receive many emails each day, and when you write messages on distribution lists.

Creating meaningful subject lines makes searching for emails in Gmail much easier.   Oftentimes, you receive many email messages from the same person and meaningful subject lines allow you to easily determine which email you want because the subject line describes the content.

Meaningful subject lines can assist in receiving timely responses.  They assist a recipient in choosing the correct email.  

Meaningful subject lines can also help you to receive more timely responses.  This is because co-workers who receive many emails everyday can immediately determine the topic and importance of your email.

When sending emails, it is important not to reply to an email with an unrelated  topic or question.  A new topic should have a new subject line because it is a new conversation.

For more good advice, check out the web page: Top 10 strategies for writing effective emails.

Gmail Help on Understanding Gmail Conversations: 

Gmail groups all replies with their original message, creating a single conversation or thread. In other email systems, responses appear as separate messages in your inbox, forcing you to wade through all your mail to follow the conversation. In Gmail, replies to emails (and replies to those replies) are displayed in one place, in order, making it easier to understand the context of a message -- or to follow the conversation.

When you open one message in a conversation, all of your related messages will be stacked neatly on top of each other. We call this Conversation View. In Conversation View, each new message is stacked on top of the ones that arrived before it, so that the newest message is always the one you see first.

 https://support.google.com/mail/answer/5900?hl=en