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A Python library for the Postmark API (

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Postmark API library for python 2.7, 3.6 and pypy. Built on top of the requests library.

Web Framework Integration


The full Sphinx-compiled documentation is available here:

Example Usage

import pystmark

API_KEY = 'my_api_key'

# Send a single message
message = pystmark.Message(sender=SENDER, to='', subject='Hi',
                           text='A message', tag='greeting')
pystmark.send(message, api_key=API_KEY)

# Send multiple messages (via Postmark's batch send API)
recipients = ['you{0}'.format(i) for i in xrange(20)]
messages = [pystmark.Message(sender=SENDER, to=to, subject='Hi',
                             text='A message', tag='greeting')
            for to in recipients]

response = pystmark.send_batch(messages, api_key=API_KEY)

# Check API response error
except pystmark.UnauthorizedError:
    print 'Use your real API key'


  1. Fork this repo
  2. Make your changes and write a test for them
  3. Add yourself to the file and submit a pull request

Please run the tests with ./ test --with-integration, with at least python2.7, before you make a pull request. Requirements for running the tests are in tests/requirements.txt. The other versions will be handled by travis-ci.

The pep8 tests may fail if using pypy due to this bug, so that test is disabled if pypy is detected.

Copyright and License

pystmark is licensed under the MIT license. See the LICENSE file for full details.

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