Many English learners use the phrase “by the way” in conversation. It is common, friendly, and useful when you want to add extra information. But is it appropriate to say “by the way” in emails? The answer depends on the situation, your relationship with the reader, and the tone of your message.
In this article, you will learn when “by the way” is appropriate in emails, when it is better to avoid it, and what alternatives you can use in professional communication.
What Does “By the Way” Mean?
“By the way” is used to introduce additional information, usually something that is not directly connected to the main topic.
It often signals a small change in direction in the conversation.
“By the way, did you finish the report?”
In speech, this sounds natural and friendly. In writing, especially in emails, tone matters more.
Is It Appropriate in Emails?
Yes, “by the way” can be appropriate in emails — but not in every situation.
It Is Appropriate When:
- You are writing an informal or friendly email.
- You know the person well (colleague, teammate, friend).
- The additional information is minor.
- The tone of the email is casual.
It May Not Be Appropriate When:
- You are writing a formal business email.
- You are contacting someone for the first time.
- You are speaking to a senior manager or client.
- The topic is serious or sensitive.
In formal contexts, “by the way” can sound too casual or unprofessional.
Examples of “By the Way” in Emails
Here are practical examples to help you understand how it works.
1. Friendly Email to a Colleague
Hi Mark,
Thanks for sending the presentation slides. They look great.
By the way, are you joining the team lunch tomorrow?
Best,
Anna
This is appropriate because the tone is relaxed and friendly.
2. Informal Follow-Up Email
Hello Sarah,
I’ve attached the updated budget file.
By the way, I noticed a small error in last month’s report. We can fix it together later.
Regards,
Tom
Again, this works because the relationship seems comfortable.
3. Email to a Close Client
Dear James,
Thank you for confirming the meeting time.
By the way, our office will be closed next Monday due to a public holiday.
Kind regards,
Emily
If you already have a good relationship, this is usually acceptable.
4. Too Casual for a Formal Situation
Dear Professor Smith,
I am writing to request an extension for my assignment.
By the way, I may also miss next week’s lecture.
Sincerely,
David
In this case, “by the way” sounds too informal. A more formal connector would be better.
More Professional Alternatives
If you want to sound more formal or professional, consider these alternatives:
- Additionally,
- Furthermore,
- Also,
- In addition,
- I would also like to mention that…
- Please note that…
- On a related note,
Examples with Alternatives
Additionally, I would like to confirm the deadline for this project.
Please note that the office will be closed on Friday.
I would also like to ask about the status of the contract.
These phrases sound more structured and professional.
Comparison Table: “By the Way” vs. Formal Alternatives
| Situation | “By the Way” | Better Alternative |
|---|---|---|
| Email to a friend | Appropriate | No need for formal alternative |
| Email to colleague you know well | Usually appropriate | “Also” or “On a related note” |
| First email to a client | Not recommended | “Additionally” or “I would also like to mention” |
| Formal academic email | Too casual | “Furthermore” or “In addition” |
| Serious complaint email | Not appropriate | “Please note” or “I would also like to raise” |
Why Tone Matters in Emails
Emails do not include facial expressions or voice tone. Because of this, words can seem more casual or more direct than you intend.
“By the way” can sometimes give the impression that the new information is not important. If the information is important, use a stronger transition phrase.
For example:
By the way, we need to change the contract terms.
This sounds too relaxed for something serious. A better option would be:
Please note that we need to revise the contract terms.
The second sentence clearly shows importance.
Quick Summary: Key Takeaways
- “By the way” is informal and conversational.
- It is suitable for friendly or casual emails.
- It may sound unprofessional in formal business communication.
- Use more formal alternatives in serious or first-time emails.
- Always consider your relationship with the reader.
Final Thoughts
So, is it appropriate to say “by the way” in emails? Yes — but only in the right context. In friendly communication, it sounds natural and warm. In formal or professional settings, it is usually better to choose a more structured alternative.
When writing emails in English, always think about tone, relationship, and purpose. Choosing the right transition phrase can help you sound confident, polite, and professional.
If you are unsure, it is safer to use a slightly more formal expression. Over time, you will develop a strong sense of when casual language feels natural and when it does not.