Fully Transient SMTP/IMAP Relay

Private conversations.
Automatically forgotten.

Create temporary communication channels without revealing personal email addresses.

Message
To:john@example.com
Subject:Project Feedback

"Your recent work was excellent. Looking forward to your thoughts."

Send
Conversation Created
Active
PKM-8XF2-91KS

Save this token to view replies securely.

Reply Received

Thank you. I'll review it and get back to you soon.

FEATURES

Built for private communication.

PostMarker enables temporary private conversations without revealing your personal email address.

Every conversation is protected by a secure token and automatically deleted after 7 days.

The system is designed around privacy, simplicity, and trust.

Anonymous Relay

Recipients never see your personal email address. Messages are routed through PostMarker's relay infrastructure.

You
you@gmail.comRelay Agentrecipient@domain.com

Secure Tokens

Every conversation generates a private token. Only the token holder can access replies.

ECDSA-256 SIGNATURE
PKM-8XF2-91KS

Reply Tracking

View replies through a temporary inbox without creating an account.

inbox/thread_PKM-8XF2
Live
Is the item still available for pick up?
You (via Relay)
Yes, still available. I can meet you tomorrow morning.
Recipient (Masked)

Automatic Expiration

All conversations are permanently deleted after 7 days. Privacy by default.

D0
Created
D3
Active
D7
Purged
TIME REMAINING UNTIL PURGE
06d
:
23h
:
59m
:
58s
Architecture

The Data Lifecycle

Phase01

Compose

Write your email securely using our visual editor card and specify a recipient.

Phase02

Secure Key

We generate a unique cryptographic token. This is your only key to view replies.

Phase03

Reply Relay

Recipient replies directly to your dynamic alias. Mail is routed to your secure queue.

Phase04

Decrypt Sync

Use your private key to view your inbox. All sync matches run instantly on fetch.

Help Us Improve

Found a bug? Have a feature request? Let us know. Your feedback goes directly to the developers.