Alternatives

Products that do what Postways, a Message Management System for Transactional Messages does

1. 1LL
   Liftbridge – Lightweight, fault-tolerant message streams▲147

   2020 · liftbridge.io

2. 2AS
   A self-hosted email engine▲149

   2020 · mailcoach.app

3. 3PA
   Postman – A command-line utility for batch-sending email▲48

   2014 · github.com

4. 4SD
   Sandglass – Distributed, scalable, persistent time-sorted message queue▲188

   2017 · github.com

5. 5
   HiveFlux + Slack▲93

   Real-time task management meets real-time communication

   2015

6. 6ES
   Erlbus – scalable pub/sub message bus written in Erlang▲54

   2015 · cabol.github.io

7. 7
   Slack▲128

   A platform for team communication

   2014

8. 8
   Pingly▲86

   A new messaging platform working to evolve email

   2014

9. 9KA
   KafkaLite – A simple message broker inspired by Kafka▲39

   2015 · github.com

10. 10MJ
    Msngr.js, a messaging library for JavaScript▲32

    2015 · github.com

11. 11BA
    Bridge, a cross-language RPC messaging system▲105

    2012 · flotype.com

12. 12OS
    Open-source conversational platform and unified messaging APIs▲103

    2021 · airy.co

13. 13IB
    IMAP-based message broker client written in Go▲87

    2016 · github.com

14. 14SA
    StarQueue – a free hosted HTTP message queue with a Postgres back end▲43

    2021 · starqueue.org

15. 15SA
    Spiral – A Reddit-inspired local message board app▲37

    2014 · getspiralapp.com

16. 16TM
    Toc Messenger – A distributed messaging app that syncs across devices▲41

    2015 · github.com

17. 17OA
    Outkit – an abstraction layer for outbound messaging▲7

    2018 · outkit.io

18. 18MA
    Metachat, a news feed for unread Slack messages▲21

    2016 · metachat.io

19. 19TI
    TalkJS – Integrated messaging for web and mobile products▲44

    2017 · talkjs.com

20. 209A
    99messages, a lightweight olark/intercom alternative▲13

    2018 · 99messages.com

21. 21ST
    Stacker – The Easiest way to Publish and Reply on Social Media▲35

    2014 · getstacker.com

22. 22CB
    Contentful-based email content editor▲28

    2016 · github.com

23. 23LL
    Liftbridge – lightweight, fault-tolerant message streams▲6

    2018 · github.com

24. 24DA
    Drymail – A minimalist but complete email framework for Python▲21

    2019 · github.com

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