About Tembox
A free temp mail service built and operated by a single developer.
Who runs Tembox
Tembox is built and operated by Deependra Singh, an independent software developer based in [REPLACE: your city, state], India. There is no "team" behind the product — just one person writing the code, managing the servers, and answering the contact inbox.
You can reach me directly at contact@tembox.xyz or on X at @tembox_official. The full postal address is on the contact page.
Service operated since 2026. Built with Next.js, Postfix, and a custom Go SMTP processor on Oracle Cloud infrastructure.
Why I built this
I started Tembox in early 2026 because I needed it. I was building another product that involved a lot of email signup testing, and every existing temp mail service let me down in one of three ways: the HTML rendering was broken on anything more elaborate than a plain text email, the mailbox expired in 10 minutes when I needed it to last the afternoon, or the UI was so cluttered with ads I could barely find the verification code.
I figured I could do better in a weekend. That weekend turned into three months. The end result is Tembox: fast, mobile-first, full HTML rendering inside a sandboxed iframe, 48-hour retention, no signup, and a UI that does not get in your way.
I keep the codebase small and the infrastructure cheap so I can keep the service free indefinitely. There is no investor pressure to grow at any cost, no team that needs to be paid, and no roadmap pressure to add features nobody asked for.
What Tembox actually does
Tembox gives you a working email address on the @tembox.xyz domain in one click. No signup, no password, no account recovery. You can use it for verification codes, signups, downloads, and any other short-lived need. After 48 hours of inactivity the address and every message routed to it are deleted from disk.
For a detailed walkthrough of how the SMTP plumbing actually works, read the temp mail technical guide.
What makes it different
Real HTML rendering
Emails are rendered inside a sandboxed iframe with strict CSP. Layouts, images, and inline CSS work as the sender intended.
48-hour retention
Long enough for delayed verification mails. Short enough that forgotten data is gone within two days.
No account, no logs
No signup, no password, no message bodies in our logs. IPs are kept in nginx access logs for 14 days for abuse prevention.
Receive-only by design
Tembox cannot send mail. That is on purpose. The moment a temp mail service can send, spammers move in and the domain ends up on every blocklist.
How Tembox is funded
The service costs roughly $20 per month in hosting and around $15 per year in domain registration. I pay for that out of pocket. To offset costs at scale I plan to run non-intrusive display ads via Google AdSense. If that does not work out for the category, I will fall back to a small set of curated affiliate links to privacy-related tools (VPNs, password managers) that I personally use.
There is no paid tier, no premium subscription, and no plan to add one. If you want to support the service directly, the best thing you can do is link to it from a relevant article or recommend it to a developer friend.
What Tembox is not for
Tembox addresses are public. Anyone who knows the local-part can open the inbox. This is a deliberate tradeoff for a frictionless tool. It means:
- Never use Tembox for banking, brokerage, or any financial account.
- Never use it for healthcare portals, government services, or anything containing personal records.
- Never use it for accounts you plan to keep — password resets will fail once the address expires.
- Do not use it for anything illegal. We cooperate with legitimate law enforcement requests under Indian law.
For a longer discussion of what temp mail is and is not appropriate for, see this article.
Contact and feedback
Bug reports, feature requests, abuse reports, and press inquiries all go to contact@tembox.xyz. I read every message and reply within a couple of days. You can also see the full contact details, including postal address, on the contact page.