Answer to "reply to" not to sender

[v_tm]

I have a lot of customers working with a contact form on our website. The problem is, that i want to reply to the "reply to" e-mail and not the senders e-mail. I found a plugin on the jira store but it crashes my whole system when i activate it. They dont answer on tickets or on mails. 

So is there any other option to enable the answers to the "reply to" email headers?

Thanks in advance for your help

[Boris Berenberg - Atlas Authority]

Is this the plugin: https://marketplace.atlassian.com/apps/1219595/service-desk-reply-to-mail-handler?hosting=server&tab=overview ?