Follow up, follow-up, or followup? The correct form depends on the grammatical role of the expression. If you are using it as a verb, write follow up. If you are using it as a noun or adjective, write follow-up. The one-word form followup is generally not the standard choice in formal, edited English.
This small difference matters in everyday writing. A person may write a follow-up email, follow up with a customer, ask a follow-up question, or schedule a follow-up appointment. Once you know what the expression is doing in the sentence, choosing the right form becomes much easier.
Follow Up, Follow-Up, or Followup: Quick Answer
Here is the rule you can use immediately:
| Form | Grammar | Example |
| follow up | Verb | I will follow up tomorrow. |
| follow-up | Noun | We scheduled a follow-up. |
| follow-up | Adjective | I sent a follow-up email. |
| followup | Usually avoid in formal English | Use follow-up instead. |
The CDC gives the same practical distinction: follow up is the verb, while follow-up is used as a noun or adjective. Its guidance recommends avoiding followup in standard writing.
The easiest rule to remember
If it is an action → follow up
I will follow up with the client.
If it is a thing or describes a thing → follow-up
I sent a follow-up email.
We scheduled a follow-up.
That is the core rule.
What Does “Follow Up” Mean?
Follow up means taking additional action after something has already happened. You might contact someone again, check on a situation, investigate an issue, request an update, or continue something that started earlier.
For example:
I will follow up with the customer tomorrow.
The speaker is describing an action that will happen later.
You can follow up after:
- an email
- a phone call
- an interview
- a meeting
- an application
- a complaint
- a quotation
- a doctor’s appointment
- a customer inquiry
- a request for information
The meaning stays connected to the idea of doing something further after an earlier event.
When Should You Write “Follow Up”?
Use follow up when it functions as a verb.
Follow Up With a Person
Use follow up with when the person, customer, company, team, or organization is the person you are contacting.
I will follow up with the manager tomorrow.
She needs to follow up with the customer.
Please follow up with the admissions office.
I will follow up with you next week.
Here, follow up describes the action.
Follow Up on an Issue
Use follow up on when you are taking further action concerning a subject, problem, request, application, or piece of information.
I will follow up on your application.
We need to follow up on the complaint.
The manager asked me to follow up on the request.
The reporter followed up on the story.
A useful way to remember the difference is:
with → who you contact
on → what you are dealing with
You can also use both:
I will follow up with the customer on the issue tomorrow.
The CDC provides examples of both follow up with and follow up on in its clear-writing guidance.
When Should You Write “Follow-Up”?
Use follow-up when it works as a noun or adjective.
Follow-Up as a Noun
A follow-up is the additional action, event, communication, or step itself.
Examples:
We need a follow-up after the meeting.
The doctor scheduled a follow-up.
I sent a quick follow-up.
The company requested a follow-up.
You can often test this by asking:
“Am I talking about the thing or action itself?”
If yes, follow-up is usually the appropriate form.
Follow-Up as an Adjective
Use follow-up when it describes another noun.
This is extremely common in professional, academic, medical, and everyday writing.
Examples include:
- follow-up email
- follow-up question
- follow-up meeting
- follow-up call
- follow-up appointment
- follow-up interview
- follow-up letter
- follow-up visit
- follow-up study
- follow-up report
- follow-up message
- follow-up request
- follow-up assessment
For example:
I sent a follow-up email after the interview.
Here, follow-up describes the word email.
The CDC’s guidance uses the same noun/adjective distinction and gives examples including follow-up interviews, letters, appointments, and studies.
Is “Followup” Correct?
For standard formal writing, followup is best avoided.
If you are writing:
- a business email
- an academic paper
- a professional report
- website content
- a résumé
- a cover letter
- a formal message
the safest standard choices are:
follow up for the verb
follow-up for the noun or adjective
The CDC’s editorial guidance is particularly direct on this point: it recommends follow up as the verb and follow-up as the noun/adjective, with followup marked as the form to avoid.
That does not mean you will never see followup written as one word. English usage can vary across informal, organizational, or specialized contexts. But if your goal is clear, conventional formal English, follow up and follow-up are the better choices.
Follow Up vs Follow-Up: How Can You Tell?
Instead of memorizing every example, use this simple test.
The Action Test
Ask yourself:
Is someone doing something?
If yes, use follow up.
I will follow up tomorrow.
She will follow up with the client.
We need to follow up on the complaint.
The Thing Test
Ask:
Am I naming or describing a thing, event, communication, or action?
If yes, use follow-up.
a follow-up email
a follow-up meeting
a follow-up question
a follow-up
This is more reliable than simply trying to remember where the hyphen belongs.
Follow-Up Email or Follow Up Email?
The standard form is:
follow-up email
Why?
Because follow-up describes the noun email.
Correct:
I sent a follow-up email.
She received a follow-up email from the company.
Please send a follow-up email tomorrow.
Not the preferred formal form:
I sent a follow up email.
And not:
I sent a followup email.
But notice the difference when the expression becomes a verb:
I will follow up by email tomorrow.
Here, follow up is an action, so there is no hyphen.
Follow-Up Question or Follow Up Question?
Use:
follow-up question
Example:
I have a follow-up question about your answer.
The expression describes the noun question, so it is hyphenated.
But you can also write:
I would like to follow up with another question.
Now follow up is a verb.
Both sentences are correct because the grammar has changed.
Follow-Up Meeting or Follow Up Meeting?
Use:
follow-up meeting
Example:
We scheduled a follow-up meeting for Friday.
Here, follow-up describes the meeting.
But:
We will follow up after Friday’s meeting.
Here, it is a verb.
This pattern applies to many similar expressions.
Follow-Up Appointment or Follow Up Appointment?
The standard form is:
follow-up appointment
For example:
The doctor scheduled a follow-up appointment.
I have a follow-up appointment next month.
But:
The doctor will follow up with the patient next month.
The first example uses the compound adjective follow-up. The second uses the verb follow up.
“Following Up” Is Also Correct
Another form readers often encounter is following up.
This is simply the -ing form of the verb follow up.
Examples:
I am following up on my previous email.
She is following up with the customer.
We are following up after yesterday’s meeting.
Notice that the verb remains two words:
following up
not:
following-up
However, when the expression functions as a compound adjective before a noun, different constructions can require a hyphen according to their grammatical structure and style.
For ordinary email writing, this distinction is enough:
I am following up on your request.
This is a follow-up email.
“Followed Up” Is Also Two Words
The past-tense form also keeps the two words:
She followed up with the client.
We followed up on the complaint.
The journalist followed up on the original report.
Do not change the verb into followed-up merely because it is in the past tense.
Follow Up With vs Follow Up On
These two expressions are related but serve different purposes.
Follow Up With = Person or Organization
I will follow up with Sarah.
Please follow up with the customer.
We should follow up with the school.
Follow Up On = Subject or Matter
I will follow up on the application.
She followed up on the complaint.
The team followed up on the request.
Follow Up With Someone About Something
You can combine the structures when needed:
I will follow up with Sarah about the application.
This tells the reader both who you will contact and what you will discuss.
Follow-Up in Professional Emails
This is one of the most common places where the distinction matters.
Imagine you interviewed for a job and want to contact the company afterward.
You could write:
I wanted to follow up on my application.
Here, follow up is the verb.
If you are describing the message:
This is a follow-up email regarding my application.
Here, follow-up is an adjective.
If you refer to the communication itself:
I wanted to send a follow-up regarding my application.
Here, follow-up is a noun.
The meaning is closely related, but the grammatical role changes the spelling.
Follow-Up in Customer Service
The same distinction appears in business communication.
A customer service representative might say:
I will follow up with the customer tomorrow.
The next communication could be:
a follow-up call
And the action might be described as:
We need to follow up after the call.
This is why simply memorizing “always use follow-up” creates mistakes. The correct form depends on how the phrase functions in the sentence.
Follow-Up in Academic Writing
Academic and research writing uses follow-up frequently.
Common expressions include:
- follow-up study
- follow-up research
- follow-up assessment
- follow-up interview
- follow-up analysis
- follow-up evaluation
Example:
The researchers conducted a follow-up study two years later.
But:
The researchers decided to follow up on the initial findings.
The first uses follow-up as a modifier; the second uses follow up as a verb.
Follow-Up in Medical Writing
Medical communication commonly uses terms such as:
- follow-up appointment
- follow-up visit
- follow-up examination
- follow-up care
- follow-up treatment
For example:
The patient returned for a follow-up appointment.
Again, the hyphenated form is being used before a noun.
The CDC’s own writing guidance includes follow-up appointment among its examples.
Follow-Up vs Follow Through
These expressions are sometimes confused, but their meanings are different.
Follow Up
Means taking additional action after something has already happened.
I will follow up with the client.
Follow Through
Means continuing with an action, promise, or plan until it is completed.
She promised to follow through with the project.
For example, sending a reminder to a customer is a follow-up. Making sure the entire agreed process is completed may involve following through.
Follow-Up vs Follow-On
Follow-on is another related expression, but it should not automatically replace follow-up.
A follow-up usually refers to additional action, communication, investigation, or an event connected with something earlier.
A follow-on can describe something that comes afterward as a continuation.
For example:
The company scheduled a follow-up meeting with the client.
The first project led to a follow-on project.
These expressions can overlap in some contexts, but they are not interchangeable in every sentence.
Common Follow-Up and Follow Up Mistakes
The fastest way to learn the rule is to see the errors people commonly make.
Mistake 1: “I Will Follow-Up”
Incorrect in standard usage:
I will follow-up with you tomorrow.
Better:
I will follow up with you tomorrow.
The phrase is functioning as a verb.
Mistake 2: “Follow Up Email”
Less standard in formal writing:
I sent a follow up email.
Better:
I sent a follow-up email.
The phrase describes email, so use the hyphenated form.
Mistake 3: “Followup Email”
Avoid:
I sent a followup email.
Better:
I sent a follow-up email.
Mistake 4: “Followed-Up”
Avoid treating the phrasal verb like a hyphenated compound:
She followed-up with the client.
Better:
She followed up with the client.
Mistake 5: Using “Follow-Up” as the Verb
I will follow-up tomorrow.
Better:
I will follow up tomorrow.
The hyphenated form is not normally used for the ordinary verb.
A Practical Sentence-Diagnosis Method
When editing your writing, look at the sentence rather than the keyword alone.
Example 1
I will ___ with the customer tomorrow.
The blank needs an action.
Answer: follow up
I will follow up with the customer tomorrow.
Example 2
I sent a ___ email.
The blank describes email.
Answer: follow-up
I sent a follow-up email.
Example 3
We scheduled a ___ after the interview.
The blank is the thing being scheduled.
Answer: follow-up
We scheduled a follow-up after the interview.
Example 4
I am ___ on my previous message.
This is an action.
Answer: following up
I am following up on my previous message.
Once you look at the grammar this way, the spelling becomes much easier.
A Simple Decision Tree
Use this whenever you are unsure:
Are you describing an action?
↓ Yes
Use follow up
I will follow up tomorrow.
↓ No
Are you naming the additional action or event?
↓ Yes
Use follow-up
We scheduled a follow-up.
↓ No
Is it describing another noun?
↓ Yes
Use follow-up
a follow-up email
One-line memory trick
Do something → follow up
Name or describe something → follow-up
Quick Comparison Table
| Sentence | Correct form | Why? |
| I will follow up tomorrow. | follow up | Verb |
| Please follow up with the client. | follow up | Verb |
| We will follow up on the request. | follow up | Verb |
| I sent a follow-up email. | follow-up | Adjective |
| She asked a follow-up question. | follow-up | Adjective |
| We scheduled a follow-up. | follow-up | Noun |
| I am following up on your message. | following up | Verb form |
| She followed up with the manager. | followed up | Past-tense verb |
| I sent a followup email. | Avoid | Nonstandard for formal edited English |
Real-World Examples
Job Application
I wanted to follow up on my job application.
I sent a follow-up email to the hiring manager.
Customer Service
We will follow up with you after reviewing your request.
A follow-up call will be made tomorrow.
School or University
I will follow up with the admissions office.
The university sent a follow-up message.
Business Meeting
We should follow up after today’s meeting.
Let’s schedule a follow-up meeting next week.
Interview
She sent a follow-up email after the interview.
The interviewer asked a follow-up question.
Medical Context
The doctor scheduled a follow-up appointment.
The clinic will follow up with the patient.
These examples show the same expression changing form according to its grammatical role.
Is “Follow Up” Always Two Words?
When it is functioning as the verb, yes, write it as two words:
follow up
followed up
following up
will follow up
The hyphenated form follow-up is normally used when the expression is functioning as a noun or adjective.
Is “Follow-Up” Always Hyphenated?
In the standard uses discussed here, yes:
follow-up email
follow-up meeting
follow-up question
a follow-up
The exact treatment of compounds can vary under different editorial style systems, but follow-up is the standard dictionary and formal-writing form for the noun/adjective uses covered in this article. The CDC specifically recommends the hyphenated form for those uses.
Is “Followup” Acceptable in Professional Writing?
If you want the safest conventional choice, no.
Use:
follow up as a verb
and:
follow-up as a noun or adjective.
You may encounter followup in informal or specialized writing, but it is not the form to choose when you want polished, standard professional English.
Why the Hyphen Matters
The hyphen helps readers see that follow-up works as a single unit modifying a noun.
Compare:
follow-up question
The reader immediately understands that the two words together describe the type of question.
This is especially useful in professional writing where clarity matters more than saving one punctuation mark.
The goal is not to add hyphens everywhere. The goal is to use the form that makes the grammatical relationship clear.
Mini Practice Test
Choose follow up, follow-up, or following up.
- I will ___ with the client tomorrow.
- She sent a ___ email.
- We scheduled a ___ meeting.
- I am ___ on my previous message.
- The doctor requested a ___ appointment.
- Please ___ on the customer’s request.
- He asked a ___ question.
- The manager ___ with the supplier yesterday.
Answers
- follow up
- follow-up
- follow-up
- following up
- follow-up
- follow up
- follow-up
- followed up
If you can identify whether the phrase is an action, thing, or description, you can solve almost every example.
What Is the Best Form for SEO and Website Writing?
The best form is the one that is grammatically correct for the sentence—not the one that repeats the target keyword most often.
For example, if your page is about follow-up emails, naturally using related phrases such as:
- follow-up email
- follow up with a customer
- follow up on an application
- following up after an interview
- follow-up message
- follow-up question
- follow-up meeting
can make the page more useful because these phrases represent real ways people discuss the topic.
There is no reason to force “followup or follow up” into every heading or paragraph.
Google’s current guidance emphasizes creating helpful, reliable, people-first content and warns against content produced at scale primarily to manipulate Search rankings.
For this topic, the strongest SEO approach is therefore complete grammatical coverage + clear examples + natural language, rather than keyword repetition.
Key Takeaways
Remember these three forms:
Follow up
Use it as a verb.
I will follow up tomorrow.
Follow-up
Use it as a noun or adjective.
We scheduled a follow-up.
I sent a follow-up email.
Followup
Generally avoid it in formal, edited English.
If you remember only one question, ask:
Am I doing something, or am I naming/describing something?
Doing → follow up
Naming/describing → follow-up
That simple distinction will help you choose the correct form in emails, reports, academic writing, business communication, applications, and everyday English.
Frequently Asked Questions
Is it followup or follow up?
For the verb, use follow up. For the noun or adjective, use follow-up. Followup is generally best avoided in standard formal writing.
Is “follow up” two words?
Yes. When it is a verb, write follow up as two words.
I will follow up tomorrow.
Is “follow-up” one word?
No. The standard noun/adjective form is follow-up, with a hyphen.
Should I write “follow-up email” or “follow up email”?
Use follow-up email.
I sent a follow-up email.
Here, follow-up describes the noun email.
Is “I will follow-up with you” correct?
For standard formal English, write:
I will follow up with you.
The expression is functioning as a verb.
Is “following up” correct?
Yes.
I am following up on my previous email.
It is the -ing form of the verb follow up.
Is “followed up” correct?
Yes.
She followed up with the customer yesterday.
The verb remains two words.
Should I say “follow up with” or “follow up on”?
Use follow up with when referring to the person or organization you contact.
I will follow up with John.
Use follow up on when referring to the issue, request, application, or subject.
I will follow up on the application.
Is “follow-up question” correct?
Yes.
I have a follow-up question.
Here, follow-up describes question.
Is “follow-up meeting” correct?
Yes.
We scheduled a follow-up meeting.
Is “follow-up appointment” correct?
Yes.
The doctor scheduled a follow-up appointment.
Can “follow-up” be a noun?
Yes.
We need a follow-up.
The doctor scheduled a follow-up.
Can “follow up” be a noun?
In standard edited usage, when you mean the noun, follow-up is the safer conventional form.
Is followup ever used?
Yes, you may encounter followup as a closed form in some informal or specialized contexts. However, for formal and professional writing, follow up and follow-up are the safest standard choices.
My name is Michael Turner, and I have always been fascinated by animals and the unique relationships people build with them. I enjoy researching naming ideas from different cultures, languages, and traditions to help pet owners discover names that truly stand out. At Meanixo, I write informative articles designed to make pet naming fun, simple, and stress-free. I believe reliable information and creativity should always go hand in hand.
Books:
- The Ultimate Pet Name Collection
- Living Better with Pets
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