Temporary e-mail service is one of the most needed services in daily life. A temporary e-mail service is required to view the content of a forum, to use a 7-day trial version of a program, to use an online service. Because most sites or apps that want to email you do so to send you ads, spam, or send you infected files that can damage your devices and steal your data. You do not want such mails to come to your personal and always used e-mail address.
You can also use temporary email when registering on Twitter, Instagram, Facebook, and other social media sites. However, it is better to register on social media sites with your e-mail address and phone number. Because known and reliable sites like these will not send you harassing or infected emails.
In some cases, these sites may need to send you e-mails, if you use disposable e-mails, you will not be able to access the same address again, so you cannot see the e-mail sent to you and you may have problems logging into your account.