diff --git a/easywks/process.py b/easywks/process.py
index 676bff7..4379ee3 100644
--- a/easywks/process.py
+++ b/easywks/process.py
@@ -10,7 +10,7 @@ from .types import SubmissionRequest, ConfirmationResponse, PublishResponse, Con
 
 from email.message import MIMEPart, Message
 from email.parser import BytesParser
-from email.policy import default, SMTP
+from email.policy import default
 from email.utils import getaddresses
 
 from pgpy import PGPMessage, PGPKey, PGPUID
@@ -57,7 +57,7 @@ def _get_pgp_publickey(parts: List[MIMEPart]) -> PGPKey:
         except PGPError:
             pass
     if not pubkey:
-        raise EasyWksError('No PGP public key pubkey in message')
+        raise EasyWksError('No PGP public key in message')
     return pubkey
 
 
@@ -134,11 +134,11 @@ def process_mail(mail: bytes = None):
         raise EasyWksError('Message has more than one recipients')
     _, rcpt_mail = rcpt[0]
     if rcpt_mail != submission_address:
-        raise EasyWksError(f'Message not addressed to submission address {submission_address} for domain {sender_domain}')
+        raise EasyWksError(f'Message not addressed to submission address {submission_address} '
+                           f'for domain {sender_domain}')
     leafs = _get_mime_leafs(msg)
     pgp: PGPMessage = _get_pgp_message(leafs)
     decrypted = pgp_decrypt(sender_domain, pgp)
-    rmsg = None
     if decrypted.is_signed:
         request: ConfirmationResponse = _parse_confirmation_response(decrypted, submission_address, sender_mail)
         try: