Invalid email address – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 7-8.9

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Briefly, this error occurs when Elasticsearch tries to process an invalid email address. This could be due to incorrect formatting, missing ‘@’ symbol, or invalid characters. To resolve this issue, you can validate the email address before sending it to Elasticsearch. Ensure it follows the standard email format ( Additionally, check your data source for any anomalies or inconsistencies in the email addresses. If you’re using a script or a program to input data, ensure it’s correctly formatted and doesn’t contain any errors.

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This guide will help you check for common problems that cause the log ” invalid email address [{}] ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “invalid email address [{}]” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 try {
 for (Email.Address address : Email.AddressList.parse(email)) {
 } catch (AddressException e) {
 throw new ElasticsearchParseException("invalid email address [{}]"; e; email);


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