The Problem with Public Temp-Mail Domains
Most temporary email services share a handful of well-known domains. Websites maintain blocklists of these domains and reject registrations from them. Using your own domain sidesteps this entirely — your addresses look just like any other legitimate email.
Commonly blocked domains
tempmail.com, guerrillamail.com, mailinator.com, yopmail.com — and hundreds more are on public blocklists. Your own domain will never appear on these lists.
How It Works on OpenInbox
- 1Connect your domain in Settings → Domains (one-time setup).
- 2Add the required MX and DKIM records at your registrar.
- 3Once verified, select your domain when creating a new inbox.
- 4OpenInbox generates a random address like [email protected].
- 5Emails arrive in real time — view, copy OTPs, download attachments.
- 6The inbox auto-expires after the configured lifetime (1h–30d depending on plan).
Why Your Own Domain Is Better
Never Blocklisted
Your domain is yours alone — it will never appear on public disposable-email blocklists.
Professional Appearance
Emails from @yourdomain.com look legitimate to colleagues, clients, and automated systems.
Full Privacy
Inboxes expire automatically. After expiry, all emails and attachments are permanently deleted.
Catch-All Ready
Any address at your domain works — no need to pre-create mailboxes.
Real-World Scenarios
Signing up for free trials
Use a fresh address each time without burning your real inbox. The disposable address looks real enough that no service will reject it.
Collecting OTP codes
OpenInbox auto-detects one-time passwords and highlights them — even on custom domain inboxes.
Testing email templates
Designers and marketers can send test campaigns to addresses on their company domain and preview them in the OpenInbox viewer.
Start Using Your Domain Today
Pick a paid plan, connect your domain, and create your first disposable inbox in minutes.
See Pricing