If a single attachment fails, continue with the others instead of failing altogether

api/src/Mail.php

@@ -6759,6 +6759,8 @@ class Mail
 				$basedir = $data = '';
 				$needTempFile = true;
 
+				try
+				{
 					// do not change urls for absolute images (thanks to corvuscorax)
 					if (substr($url, 0, 5) !== 'data:')
 					{
@@ -6849,6 +6851,13 @@ class Mail
 							$_html2parse = str_replace($images[0][$i], $images[1][$i].'="'.$cid.'"', $_html2parse);
 						}
 					}
+				}
+				catch(\Exception $e)
+				{
+					// Something went wrong with this attachment.  Skip it.
+					error_log("Error adding inline attachment.  " . $e->getMessage());
+					error_log($e->getTraceAsString());
+				}
 				$attachments [] = array(
 					'name' => $filename,
 					'type' => $mimeType,