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Merge pull request #494 from leider/hotfix

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FIX: sent mails don’t render txt on button
Merge pull request #496 from leider/hotfix

FIX: sent mails don’t render txt on button
Merge branch 'hotfix'

# Via Andreas Leidig (2) and leider (1)
* hotfix:
  FIX: sent mails don’t render txt on button
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