Add a Reply-To Header to Outgoing Emails
Adds the site admin address as Reply-To on emails that do not set one, so replies to no-reply senders reach a real inbox.
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Change the Sender Name and Address of WordPress Emails
Replaces the default "WordPress <wordpress@yourdomain>" sender with your site name and, optionally, an address of your choice.
Limit Contact Form 7 Submissions per Visitor
Allows only a few Contact Form 7 submissions per IP address each hour and treats the rest as spam, which stops bots and angry repeat senders flooding your inbox.
Match the Return-Path to the From Address
Sets the envelope sender (Return-Path) of outgoing emails to the From address, which improves SPF alignment and deliverability on many hosts.
Send Contact Form 7 Emails From Your Own Domain
When a Contact Form 7 form is set to send "from" the visitor's address, switches the sender to your own domain and moves the visitor's address to Reply-To, so emails stop landing in spam.