Postmark
postmarkapp.comApplication email with distinct transactional and broadcast message streams
Application email with distinct transactional and broadcast message streams
Route application messages through queues so publishers and background workers can operate independently.
Flat-rate team chat for small businesses with channels and unlimited message history.
Coordinate team work in workspace channels and direct messages within the Ubirimi suite.
Email delivery with message tracking and bounce controls
Manage corporate messaging with group chats, offline delivery, and centrally administered message archives.
Inspect and transform JSON from a terminal with an interactive viewer and JavaScript queries.
Website and app measurement through configured data streams and events.
Email delivery and stream-level monitoring for teams managing multiple senders
SMTP and API email with independently configured application streams
Automatically generates gaming highlights from Twitch and YouTube streams and local videos.
Underground film and music television with curated live streams
Test email and SMS workflows by routing app-generated messages to controllable inboxes and numbers.
Self-hosted newsletter campaigns with project workspaces and a draft-message queue
Self-hosted email delivery with per-server queues, retention and message investigation
Message colleagues in direct chats and channels with searchable history, mentions, and file sharing.
A Korean workplace messenger with channels, threads, translation, and timed message deletion.
Run standalone team chat or connect conversations with Toolscase time tracking.
Run self-hosted office chat with group discussions, message synchronization, and screen sharing.
Mailing-list administration with separate owner, moderator and service roles
Define structured messages in `.proto` files and generate language-specific serialization code.
Directional audience evidence from Human Digital Twins
Forwarding aliases that stop after a chosen message count
Transactional email and campaigns with separate content and metadata retention settings