diff --git a/backup_imap/backup_imap.py b/backup_imap/backup_imap.py
index 93c7193..dd35cc5 100644
--- a/backup_imap/backup_imap.py
+++ b/backup_imap/backup_imap.py
@@ -54,7 +54,7 @@ class BackupImap:
             os.mkdir(self.config['destination_folder'])
 
         self.imap = None
-        imaplib._MAXLINE = 100000
+        imaplib._MAXLINE = 1000000
         self._connect_imap(
                 imap_server=self.config['imap_server'],
                 imap_port=self.config['imap_port'],