Regular Expression Extractor Jmeter - I want to send email for 404 response codes

Question

I am writing a test case which will hit a URLs and send email if response code is 404. Request is going well and Response also coming but I am stuck at Regular Expression Extractor.Sample Request Result

![Sample Result for HTTP Request][Extractor Page]

Answer 1

1. Amend your Regular Expression to be \d+
2. Add If Controller after the "Landing Page Verification" request and use "${responsemsg}" == "404" as the condition
3. Make SMTP Request sampler a child of the If Controller

Example Test Plan snapshot

Answer 2

Change the regular expression to (\d+) and template to $1$ and match no. to 1. see using regex with jmeter and Regular Expressions from jmeter user manual for more information.