diff --git a/active_bots/mastodonbot.py b/active_bots/mastodonbot.py
index c0e0240..1a313dc 100755
--- a/active_bots/mastodonbot.py
+++ b/active_bots/mastodonbot.py
@@ -21,7 +21,7 @@ class MastodonBot(Bot):
         m = Mastodon(*user.get_masto_credentials())
         try:
             notifications = m.notifications()
-        except:  # mastodon.Mastodon.MastodonAPIError is unfortunately not in __init__.py
+        except Exception:
             logger.error("Unknown Mastodon API Error.", exc_info=True)
             return mentions
         for status in notifications:
diff --git a/backend.py b/backend.py
index 601e19a..040aac4 100755
--- a/backend.py
+++ b/backend.py
@@ -4,7 +4,7 @@ import active_bots
 from config import config
 from db import db
 import logging
-import sendmail
+from sendmail import sendmail
 import time
 
 
@@ -30,12 +30,9 @@ if __name__ == '__main__':
                         for bot2 in bots:
                             bot2.post(user, status)
             time.sleep(60)  # twitter rate limit >.<
-    except:
-        logger.error('Shutdown', exc_info=True)
-        mailer = sendmail.Mailer()
-        try:
-            mailer.send('', config['web']['contact'],
-                        'Ticketfrei Crash Report',
-                        attachment=config['logging']['logpath'])
-        except:
-            logger.error('Mail sending failed', exc_info=True)
+    except Exception:
+        logger.error('Shutdown.', exc_info=True)
+    try:
+        sendmail(config['web']['contact'], 'Ticketfrei Shutdown')
+    except Exception:
+        logger.error('Could not inform admin.', exc_info=True)
diff --git a/db.py b/db.py
index 18e3bb3..d6c52bc 100644
--- a/db.py
+++ b/db.py
@@ -123,7 +123,7 @@ class DB(object):
             return None  # invalid token
         if 'passhash' in json.keys():
             # create user
-            self.execute("INSERT INTO user (passhash) VALUES(?, ?);",
+            self.execute("INSERT INTO user (passhash) VALUES(?);",
                          (json['passhash'], ))
             uid = self.cur.lastrowid
         else:
diff --git a/frontend.py b/frontend.py
index ae706a3..adef914 100755
--- a/frontend.py
+++ b/frontend.py
@@ -5,9 +5,8 @@ from config import config
 from db import db
 import logging
 import tweepy
-import sendmail
+from sendmail import sendmail
 from session import SessionPlugin
-import smtplib
 from mastodon import Mastodon
 
 
@@ -28,18 +27,19 @@ def register_post():
     if db.by_email(email):
         return dict(error='Email address already in use.')
     # send confirmation mail
-    confirm_link = request.url + "/../confirm/" + db.user_token(email, password)
-    send_confirmation_mail(confirm_link, email)
-    return dict(info='Confirmation mail sent.')
-
-
-def send_confirmation_mail(confirm_link, email):
-    m = sendmail.Mailer()
     try:
-        m.send("Complete your registration here: " + confirm_link, email,
-               "[Ticketfrei] Confirm your account")
-    except smtplib.SMTPRecipientsRefused:
-        return "Please enter a valid E-Mail address."
+        sendmail(
+                email,
+                "[Ticketfrei] Confirm your account",
+                "Complete your registration here: %s://%s/confirm/%s" % (
+                        request.urlparts.scheme,
+                        request.urlparts.netloc,
+                        db.user_token(email, password)
+                    )
+            )
+        return dict(info='Confirmation mail sent.')
+    except Exception:
+        return dict(error='Could not send confirmation mail.')
 
 
 @get('/confirm/<token>')
@@ -56,10 +56,14 @@ def confirm(token):
 @view('template/login.tpl')
 def login_post():
     # check login
-    if db.by_email(request.forms.get('email', '')) \
-         .check_password(request.forms.get('pass', '')):
-        return redirect('/settings')
-    return dict(error='Authentication failed.')
+    try:
+        if db.by_email(request.forms.get('email', '')) \
+             .check_password(request.forms.get('pass', '')):
+            return redirect('/settings')
+    except AttributeError:
+        pass
+    finally:
+        return dict(error='Authentication failed.')
 
 
 @get('/settings')
@@ -146,7 +150,7 @@ def login_mastodon(user):
         return dict(
                 info='Thanks for supporting decentralized social networks!'
             )
-    except:
+    except Exception:
         logger.error('Login to Mastodon failed.', exc_info=True)
         return dict(error='Login to Mastodon failed.')
 
diff --git a/sendmail.py b/sendmail.py
index 992ff1a..9fd9676 100755
--- a/sendmail.py
+++ b/sendmail.py
@@ -1,12 +1,13 @@
 #!/usr/bin/env python3
-
-import smtplib
-import ssl
 from config import config
 from email.mime.text import MIMEText
 from email.mime.application import MIMEApplication
 from email.mime.multipart import MIMEMultipart
 import logging
+from getpass import getuser
+import smtplib
+from socket import getfqdn
+import ssl
 
 logger = logging.getLogger(__name__)
 
@@ -68,6 +69,17 @@ class Mailer(object):
         return "Sent mail to " + recipient + ": " + subject
 
 
+def sendmail(to, subject, body=''):
+    msg = MIMEMultipart()
+    msg['From'] = '%s@%s' % (getuser(), getfqdn())
+    msg['To'] = to
+    msg['Subject'] = subject
+    msg.attach(MIMEText(body))
+
+    with smtplib.SMTP('localhost') as smtp:
+        smtp.send_message(msg)
+
+
 # For testing:
 if __name__ == '__main__':
     m = Mailer()