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email_utils.py
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email_utils.py
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from __future__ import print_function
import lamson.encoding
import lamson.bounce
from obj import Obj
from yaml_enum import YAMLEnum
ResponseType = YAMLEnum('ResponseType', u'!bouncekind', [
'hard',
'soft',
'complaint',
'unknown',
])
bounce_defaults = Obj(
bounce_score_threshold=2.0,
bounce_weights={
ResponseType.hard: 1.0,
ResponseType.soft: 0.5,
ResponseType.complaint: 3.0,
ResponseType.unknown: 0.0,
},
bounce_decay_factor=0.8,
)
def detect_bounce(msg):
analysis = lamson.bounce.detect(Obj(base=lamson.encoding.from_message(msg)))
print('Lamson bounce analysis: {}'.format(analysis.__dict__))
if analysis.is_hard():
print('Hard bounce.')
return ResponseType.hard
if analysis.is_soft():
print('Soft bounce.')
return ResponseType.soft
# TODO: detect complaints
return ResponseType.unknown