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How to change the subject line in Gmail?

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  • 5 min read

Do you want to change the subject line in Gmail? If you use Gmail regularly, you may have noticed that the subject line of an email conversation stays the same, even if the topic changes over time. This can make people confused about the topic of the conversation and also makes it hard to organise emails.

Fortunately, there is a way to change the subject line in Gmail when you reply or forward an email. This will help you in creating a new email thread with a more accurate and descriptive subject line. Also, you can unsubscribe from unwanted newsletters or promotions by adding ‘UNSUBSCRIBE’ to the subject line.

In this article, we’ll show you how you can change the subject line in Gmail. We’ll also share some tips on how to write an effective subject line.

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How to change the subject line in Gmail on a desktop browser?

If you’re using a desktop browser such as Chrome, Edge, Firefox or Safari, follow the instructions given below to change the subject line in Gmail:

Step 1: Open Gmail and head to the conversation in which you want to change the subject line. Once you are there, click on the Reply, Reply all or Forward buttons.

Step 2: Next, click on the Type of response (curved arrow button) on the top-left corner of the email window and a drop-down window will open. Here, select Edit subject.

Step 3: Now, enter a new subject line that is relevant to the current conversation and then click on Send.

The email will be sent with the new subject line and start a new conversation thread. The original conversation thread will remain unchanged with the old subject line.

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How to change the subject line in the Gmail app?

If you’re using the Gmail mobile app on Android or iOS, you can follow these steps to change the subject line:

  • Open the email conversation and then tap any one of these buttons: Reply, Reply all, Forward, or the Type of response curved arrow button.
  • Next, tap on the Subject line to edit it.

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Tips for writing effective subject lines in Gmail

Effective subject lines can enhance the conversation and organisation. Follow the tips given below to write effective subject lines:

  • Be specific and descriptive: Use keywords that summarise the main point or purpose of your email. Avoid vague or generic terms that do not tell your recipient what your email is about.
  • Be concise and clear: Use only a few words without losing the clarity or meaning of the subject. Avoid unnecessary words or phrases that do not add value or information to your subject line.
  • Be relevant and accurate: Always ensure that the subject line matches the content of the email and reflects any changes or updates since your last email.
  • Be polite and professional: Use proper spelling and grammar and avoid slang or jargon your recipient may not understand. Avoid using all caps, multiple exclamation points, or emoticons that may appear rude or unprofessional.
  • Be catchy and compelling: Use words that capture your recipient’s attention and interest and motivate them to open your email. Avoid bland subject lines that may get ignored or deleted.

Here are some examples of effective subject lines:

  • Request for feedback on project proposal
  • Update on invoice #12345
  • Reminder: Meeting tomorrow at 10 am
  • Invitation: Webinar on SEO best practices
  • Thank you for your order

Some examples of ineffective subject lines in Gmail are:

  • Hi
  • Fwd: Fwd: Fwd: IMPORTANT!!!
  • Urgent!!!!
  • No subject

You get the idea. Look at the ineffective subject lines. They are short, vague and do not reflect professionalism. Contrast them with those above. You will notice a remarkable difference in the subject line’s tone, aesthetic and professionalism.

Thus, by following the steps mentioned above, you can easily change the subject line in Gmail and continue having the conversation in detail.

Also read: Gmail not receiving emails? Quick Fix

Kumar Hemant

Kumar Hemant

Deputy Editor at Candid.Technology. Hemant writes at the intersection of tech and culture and has a keen interest in science, social issues and international relations. You can contact him here: