Protect your inbox without missing legitimate messages
OnlySeriousEmail is free to use. Sign up, then create a protected @OnlySerious.email address
to share publicly. Messages route through OSE, which requests a small fee from unknown senders
before forwarding to your real inbox. Trusted contacts pass through instantly.
Step 1
Publish a protected address
Post your @OnlySerious.email address publicly without exposing your real inbox.
Step 2
Request delivery confirmation
Unknown senders receive a one-time confirmation request before delivery.
Step 3
Build trusted contacts
Senders who confirm become trusted. Future messages can skip the fee.
Your public address routes through OSE
OnlySeriousEmail sits between your public address and your private inbox.
What happens to each message
Trusted sender
Messages from whitelisted senders or threads are delivered immediately.
Unknown sender
The sender receives a payment link. Once paid, delivery happens right away.
Quarantined
Suspicious messages are held for manual review so your inbox stays clean.
Set your delivery fee
Choose the per-message delivery fee when you create a protected @OnlySerious.email address.
Stay in control
Deliver messages manually and update your whitelist at any time.
Refunds if delivery fails
If delivery cannot be completed after confirmation, the sender is refunded automatically.
Need to check a delivery confirmation?
Senders can check message status using the reference code from their confirmation email.