Why do you need a catchall email for RankerX?

RankerX allows you to input your email, but everywhere I look people are saying to use a catchall email.

Why do we need a catchall email for RankerX? Wouldn't a regular generic email like [email protected] work?

using catchall is not a must, but it's way cheaper than the usual ones,
In fact, some sites don't accept custom emails with unknown emails, but it does slightly matter,
The point with catchall emails is that they're way much cheaper, especially if use your own domain,
You can easily get 2k-5k or even more emails for an $8 domain or even cheaper ones,
Just make sure to make and upload a list of these domains, using spintax format just mess it up as many emails get reused over and over,
Make a list using a list of usernames the domain name, the catchall email & the server configs, Sublime text or notepad+ would make it pretty easy

The idea that there a main email that catch all emails that why it called catch all.

You add a email address to rankerx to catch all email from 1 address that way it can respond to links that need verifying for indexing.

A lot of services need a email verified before adding a link.

If you receive a email that got a return link rankerx will click it to verify that account real then your link will get indexed .