Merge branch 'develop' into 'issue/1975'

# Conflicts:
#   CHANGELOG.md

diff --cc CHANGELOG.md
index 8ea66844db4f6df543c5ba8e8d9ab5756088e833,0dc098f80e6b4a2cca0ee79b64157bd9cf02e17b..b17a0e999d8a5c2cbfd326e7c062ed2fdb07e5e3
--- 1/CHANGELOG.md
--- 2/CHANGELOG.md
+++ b/CHANGELOG.md
@@@ -27,6 -28,10 +27,9 @@@ The format is based on [Keep a Changelo
  - Removed `:managed_config` option. In practice, it was accidentally removed with 2.0.0 release when frontends were
  switched to a new configuration mechanism, however it was not officially removed until now.
  
 -
+ ### Fixed
+ - Allow sending out emails again.
+ 
  ## [2.1.2] - 2020-09-17
  
  ### Security