FreeCustom.Email is a free temporary email (disposable email, temp mail) service that focuses on no registration required, no ads, and permanently free. After users open the webpage and choose a username and domain, the inbox takes effect instantly, with no waiting and no login, allowing them to receive emails, verification codes, and registration links, thereby keeping their personal real email private.
Uses
- Receive OTP verification codes, verification links, and test registration emails.
- Replace a real email when registering for apps, trials, forums, and similar scenarios to avoid receiving marketing emails.
- Developers test registration flows and OTP delivery without polluting a real inbox.
- Enterprise QA uses its own domain for internal testing and pre-release environment testing.
- Access content, downloads, or communities that require an email threshold without exposing the primary email.
Main capabilities
- Generate a temporary email address in seconds, with no registration required, a real-time inbox, and no need to refresh.
- Supports custom usernames and available domains, providing multiple immediately usable free temporary email domains, such as @sqlcompiler.info, @nimbusreach.info, @lumenbay.info, @haloforge.online, @haloforge.info, @echoharbor.in, and new domains are added regularly. Using lesser-known domains can reduce the probability of being blocked by registration forms.
- Ad-free interface, no pop-ups, no tracking.
- Tiered storage and features: anonymous visitors need no account, and emails are stored for 12 hours; after logging in, emails are stored for 24 hours, with support for 1MB attachments, saving the inbox, and custom email prefixes; Pro is aimed at enterprises and developers, allowing the use of their own domain (such as @your-company.com) as a temporary email, and provides 5GB permanent cloud storage, 25MB attachments, automatic OTP extraction, and full API access.
- Developer features: large attachments, OTP extraction, API access; can be used with AI agents and MCP (officially mentioned as supported).
- A public commitment to being free and ad-free, with an explanation of the architecture behind its speed.
- Google login is only used to save inbox history and manage subscriptions; the official statement says it will not access Gmail, contacts, or other Google data.
How to use
- Open the website freecustom.email and choose a username and domain.
- The inbox takes effect instantly, with no registration and no waiting.
- Use the generated temporary email for registrations, verification, or testing scenarios that require an email.
- If you need to save the inbox, attachments, or a custom prefix, you can log in to a free account; if you need your own domain, permanent storage, large attachments, automatic OTP extraction, and API, you can use Pro.
- Developers can integrate via API, and the official documentation entry point is API Overview; it also mentions automation-related capabilities such as presigned OTP URLs, wait= long polling, since= anchoring, and parseCode=.
Applicable scenarios
- Receive purchase confirmations while shopping online, while avoiding marketing emails.
- Developers test registration flows and OTP delivery.
- Enterprise QA uses its own domain for internal testing.
- Scenarios such as students, temporary registrations, and one-time verification.
- Developers and teams that need batch registration or automated account flows can use the API and OTP extraction capabilities.
- The official site also lists usage guides for Facebook, Instagram, and Discord registration, as well as developer testing and OTP verification.
Limitations and notes
- Specific free quotas, Pro pricing, API call quotas, rate limits, and other pricing and usage details are not yet provided.
- The email storage time of temporary email varies by tier: 12 hours for visitors, 24 hours for logged-in users, and permanent cloud storage for Pro.
- Some websites block temporary email domains, and the official recommendation is to use lesser-known domains to reduce the probability of being blocked.
- Details about security, specific API interfaces, and MCP integration methods are not yet fully explained in the materials.
- The official statement says Google login is only used to save inbox history and manage subscriptions; other data usage policy details are not yet provided.
