Contact Form 7 5.1.1 has just been released. This release makes improvements to the server side validation process of reCAPTCHA.
If you use reCAPTCHA v3 with Contact Form 7 5.1 and feel that you get more spam through contact forms than before, upgrading to 5.1.1 might relieve the situation.
But, please read through this post before you run an upgrade. This is an important notice.
Contact Form 7 5.1 is now available. There are major upgrades in the Integration page. The Constant Contact integration module has been newly introduced, and the reCAPTCHA module now supports the v3 API.
Contact Form 7 5.0.5 is available. This is a maintenance release including a few minor bug-fixes.
Contact Form 7 5.0.4 is available. This is a security and maintenance release and we strongly encourage you to update to it immediately.
Contact Form 7 5.0.3 is available. This is a maintenance release including some bug-fixes and improvements. In addition, Contact Form 7 5.0.3 introduces a few features related to personal data protection.
Contact Form 7 5.0.2 is available. This is a maintenance release including some bug-fixes and improvements.
Contact Form 7 5.0.1 is available. This is a maintenance release including some bug-fixes and improvements.
Contact Form 7 5.0 is now available. With growing awareness of personal data protection, we are working on improvements that will allow you to make contact forms more privacy-friendly. Some of these changes are included in 5.0. Also, with newly introduced filter hooks and special mail tag types, customizability of mail has been significantly improved.
Contact Form 7 4.9.2 is available. This is a maintenance release that includes some bug-fixes and improvements. Though none of them is critical, updating immediately is recommended.
Contact Form 7 4.9.1 is now available. This release includes several fixes and improvements and has been confirmed to be compatible with WordPress 4.9.