Common Problems and Solutions

You can think of alias as a shield that protect your primary e-mail from the internet. Aliases are specialy crafted with random strings that looks weird but are perfectly valid e-mail addresses. It is not possible to guess who is behind Alias. You should always use Alias when registering to any internet service.

Endpoint is a final destination of the mail send to your Alias. If someone send mail to Alias he/she is not aware of your endpoint - that means your Endpoint is always keep private. You can create multiple Endpoints. Endpoint should be your daily e-mail address, and you should share it only with trusted persons that you plan to exchange mails. For security reasons and to prevent spam, before you can use new endpoint you need to confirm ownership of the e-mail address.

When you upgrade to Premium subscription, you can add your custom domain to web.c0x0.com service. This gives you possiblitiy to create Aliases under your domain. For example, if you have domain iam-celebrity.com, and you add it to c0x0.com, you can generate aliases like: 2x3b98537d47597d52@iam-celebrity.com way protecting your real e-mail addresses.

c0x0.com was designed to anonimize it's user base, that's why you cannot create custom alias on basic service. If you want to generate custom aliases (for example to use c0x0.com as alias manager for your domain) it is possible in Custom Domain option. You simply configure your domain MX and SPF records and you can create custom aliases.

API let's you control your account, aliases and endpoints in a programic way. We are using REST and JWT tokens to access API endpoint. API access is ideal if you want to integrate c0x0.com into app or any other application.

SoftLimits are enforced limits to help us to fight with abuse. Purpose of the alias is to have long and happy life. It can be disabled or enabled anytime - and can be deleted whenever you want. However there are times when this feature might be abused, to prevent it SoftLimit is enforced. But do not worry in everyday use you probably never hit that limit, and if you do, please contact us.

The first thing you can do is to disable alias in control panel. Disabling alias makes it unavailable on our backend servers. This is not filtering - we are rejecing mail to that alias hard. This means noone is able to reach you as long as you enable it back.

We do not know and we do not store your passwords. We are using one-way hash function to protect passwords you enter on our website. In order to reset password you have to follow steps described here.

Payments are handled by Stripe. Service bases on subscriptions. You can freely change subscription anytime. Subscription is not prorated (see below)

Minimum subscription period is one month.

Negative balance means that you have probably upgraded and then downgraded your subscription. Since minimum length of subscription is one month, overpayment exist. This overpayment will be used in future invoices.

Do not worry. Under Profile in section "Payments and Subscription" there is link to online invoice hosted by Stripe. Click it and select new payment method