Many forums ask for an email address before you can post a reply or get a notification. That can be a problem when you only want to join one conversation and you do not want more mail in your main inbox later.
A temporary email address can help in that situation. You can use it for a short task, such as confirming a forum account or receiving a one-time message, and then leave it behind. The service at https://tempmail.is gives you a free temporary email address with no signup. It is receive-only, so you can read messages sent to that address without setting up a new account or sharing your regular address.
This approach can keep your main inbox clearer while you take part in a discussion. It is best for low-risk signups where you do not need to send mail from the address. For accounts you plan to keep long term, use your regular email instead, because a temporary address may not be available later when you need to recover access.
Have others here used a temporary address for a forum signup? If so, what worked well for you?