fastmail.io.vn is a disposable email domain
fastmail.io.vn is a disposable email domain (risk: 91/100). Block it with the free Check-Mail API.
fastmail.io.vn is a disposable temp email domain from TMail that provides throwaway email addresses and should be blocked. These temporary addresses are frequently exploited to bypass verification systems and create fake accounts.
Raw API JSON response:
{
"valid": true,
"block": true,
"disposable": true,
"email_forwarder": false,
"domain": "fastmail.io.vn",
"text": "Disposable \/ temporary domain",
"reason": "Heuristics x1",
"risk": 91,
"mx_host": "alt4.aspmx.l.google.com",
"possible_typo": [],
"mx_ip": "192.178.163.26",
"mx_info": "Found aspmx.l.google.com",
"last_changed_at": "2026-01-08T15:37:36+00:00"
}
Status: Disposable / temporary domain
Domain risk: 91
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Did you know we have a free API to validate e-mails and block fastmail.io.vn?
Other domains from TMail
Our database contains more than 100 domains linked to this provider. Below are some of the most recently blocked ones:
Technical Details for fastmail.io.vn
Risk Score
91 / 100
MX Host
alt4.aspmx.l.google.com
Disposable Provider
Detection Method
Advanced heuristics
This domain was blocked heuristically. Unknown domains are automatically analyzed and tagged with our advanced algorithms.
Last updated: Jan 8, 2026
How to Block fastmail.io.vn
You can automatically block fastmail.io.vn and thousands of other disposable and fraudulent email domains using the free Check-Mail API. Simply query the API with any email domain to get an instant block recommendation.
Example API request:
curl -X POST "https://api.check-mail.org/v2/" \ -H "Authorization: Bearer YOUR_API_KEY" \ -d "domain=fastmail.io.vn"
Get your free API key or read the documentation for integration guides in PHP, Python, JavaScript, and more.
Frequently Asked Questions about fastmail.io.vn
What is fastmail.io.vn?
fastmail.io.vn is a disposable temporary email domain operated by TMail with a risk score of 91/100. It provides users with throwaway email addresses for anonymous online activities.
Should I block fastmail.io.vn?
Yes. fastmail.io.vn is a disposable email domain with a HIGH risk level (score: 91/100). We recommend blocking this domain to prevent fake sign-ups, spam registrations, and potential fraud.
How do I block fastmail.io.vn emails?
Use the free Check-Mail API to automatically detect and block fastmail.io.vn and thousands of other disposable email domains. See the documentation for integration guides or get started with a free API key.
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