Opt is short for "option" — it means to choose something or decide not to

When someone writes "opt in" or "opt out," they are talking about making a choice. Opt in means you choose to join, receive, or participate in something. Opt out means you choose to leave, stop receiving, or not participate. The word comes from "option," and it is used in texts, emails, and online forms to describe decisions you make about what you want.

You will see "opt" most often in two situations: when a company asks permission to contact you, and when you decide to stop receiving something. For example, a store might ask if you want to opt in to their email list. A streaming service might let you opt out of notifications. The word is neutral — it just describes the act of choosing.

Key Takeaways

  • Opt in means you actively choose to join, receive, or participate in something.
  • Opt out means you actively choose to leave, stop receiving, or not participate in something.
  • Companies use these terms in emails, forms, and settings to describe what you are choosing to do.
  • Opt in usually requires you to take action, while opt out often means stopping something that was already happening.

Opt In: Choosing to Join or Receive Something

When you opt in, you are saying yes to something. This happens when you check a box that says "opt in to our mailing list" or "opt in to receive text updates." You are making an active choice to start receiving emails, texts, notifications, or other contact from a company or service.

Opt in is common on websites when you sign up for an account. A form might ask: "Would you like to opt in to promotional emails?" If you check the box, you are choosing to receive those emails. If you do not check it, you are not opting in. Some websites have the box already checked, which means you have to uncheck it if you do not want to opt in — this is called a "pre-checked" opt in, and it is less common now because many countries have rules against it.

You also opt in when you turn on notifications in an app or change your privacy settings to allow something. For example, you might opt in to location tracking so a weather app can show your local forecast, or opt in to calendar reminders so you do not forget an appointment.

Opt Out: Choosing to Stop or Not Participate

When you opt out, you are saying no to something that is already happening or that you were already part of. This is the most common use of "opt out" in everyday texts and emails. If you receive marketing emails and you opt out, you are asking the company to stop sending them to you.

Opt out usually appears at the bottom of emails. You will see a link or button that says "opt out of these emails" or "unsubscribe." Clicking it tells the company you no longer want to receive that type of message. You might also opt out by going into your account settings and unchecking a box that says "receive promotional content" or "send me notifications."

Opt out is also used for things like data sharing. A company might tell you they plan to share your information with partners, and they give you the option to opt out if you do not want that to happen. Or a social media platform might opt you in to a new feature by default, and you have to opt out if you do not want to use it.

The Difference Between Opt In and Opt Out

The key difference is what happens if you do nothing. With opt in, if you take no action, you do not join or receive anything — the default is no. With opt out, if you take no action, you stay in or keep receiving something — the default is yes.

This matters because opt out puts the burden on you to stop something, while opt in puts the burden on you to start something. Companies prefer opt out because more people stay in by doing nothing. Privacy laws in many places now require opt in for marketing emails and certain types of tracking, which means companies have to ask your permission first rather than assuming you want to hear from them.

In a text conversation, someone might write "I opted out of the group chat" or "Did you opt in to the work event?" They are using the same logic — one person chose to leave, the other chose to join.

Where You See Opt In and Opt Out

You encounter these terms constantly online. Email newsletters ask if you want to opt in when you sign up. Social media platforms let you opt out of certain types of ads or content recommendations. Apps ask if you want to opt in to push notifications. Websites ask if you want to opt in to cookies or tracking.

Retail stores use opt in and opt out for loyalty programs and mailing lists. Banks use them for paperless statements and security alerts. Streaming services use them for notifications about new shows. Job sites use them for job recommendations. Any time a company or service wants to know whether you want something or not, they frame it as opting in or opting out.

You also see these terms in workplace settings. A company might ask if you want to opt in to a retirement plan, or if you want to opt out of a group health insurance plan. A team might ask if you want to opt in to a new project or opt out of a meeting series.

How to Opt In or Opt Out in Common Situations

To opt in to something, look for a checkbox, button, or link that says "opt in," "subscribe," "sign up," or "yes, send me updates." Click or tap it, and you are in. Sometimes you have to fill out a form with your email or phone number first. Once you opt in, you should start receiving whatever you chose — emails, texts, notifications, or access to a service.

To opt out of something, look for a link at the bottom of an email that says "unsubscribe" or "opt out." Click it, and you should be removed from that mailing list. If you are opting out in an app or on a website, go to your settings or account preferences, find the option you want to turn off, and uncheck the box or toggle it off. Some services ask you to confirm that you want to opt out, usually by clicking a link in a confirmation email.

If you cannot find an opt out option, check your email settings or the company's privacy page. By law in many countries, every marketing email must include a way to opt out. If you still cannot find it, you can often reply to the email and ask to be removed, though using the official opt out link is faster.

Opt In and Opt Out in Privacy and Data

Privacy laws like GDPR in Europe and CCPA in California require companies to get your permission before collecting or sharing certain types of personal data. This means you have to opt in before a company can track you, sell your information, or use it for purposes beyond what you agreed to. You cannot be opted in by default.

This is different from how things worked before these laws. Many companies used to opt you in automatically and make you opt out if you did not want it. Now, in places with strong privacy laws, the company has to ask first. You might see a popup when you visit a website asking if you want to opt in to cookies or tracking. If you do not opt in, the website still works, but the company cannot track your behavior across the internet.

Understanding opt in and opt out is important for protecting your privacy. If you do not want a company to have your data, opt out or do not opt in. If you want to receive updates from a service you like, opt in. You are always in control of the choice.

Frequently Asked Questions

What does it mean if a company says I am already opted in?

It means you are already receiving something from them — emails, notifications, or they are already using your data in some way. This might have happened when you signed up for an account, made a purchase, or visited their website. You can opt out at any time by finding the unsubscribe or opt out option, usually at the bottom of an email or in your account settings.

If I opt out, can I opt back in later?

Yes, in most cases. If you opt out of a mailing list and later change your mind, you can usually find a way to opt back in on the company's website or by contacting them. Some companies make it easier to opt back in than others, but you should always have the option to rejoin if you want to.

Is opting out the same as unsubscribing?

Yes, they mean the same thing in most contexts. Unsubscribe is just another word for opt out. When you unsubscribe from an email list, you are opting out of receiving those emails. The terms are used interchangeably, though "opt out" is more formal and "unsubscribe" is more common in everyday emails.

Do I have to opt in to everything a website asks about?

No. You only opt in to things you actually want. If a website asks if you want to opt in to marketing emails and you do not want them, do not check the box. You can use a website or service without opting in to everything it offers. Opting in is always your choice.

What happens if I do not opt out of something I do not want?

You will keep receiving it. If you do not opt out of a mailing list, you will keep getting emails. If you do not opt out of notifications, they will keep coming. The company assumes that if you have not opted out, you are okay with it. That is why it is important to opt out of things you do not want rather than ignoring them.