SYMONOV

<p><strong>Validation Muse</strong> lets you write your own validation rules and error messages for every Contact Form 7 field — directly in the form editor, per form, per field. No code, no global settings page, no JavaScript hacks.</p>
<p>Most CF7 validation plugins broke when Contact Form 7 6.x introduced <strong>Schema-based Validation (SWV)</strong>. Validation Muse runs its filters at priority 20 (after CF7 core) and uses Reflection to replace SWV error text on already-invalidated fields, so your custom copy actually shows up — even on the new validation engine.</p>
<h4>Why Validation Muse</h4>
<ul>
<li><strong>CF7 6.x SWV compatible</strong> — works with the new Schema-based Validation engine, not just legacy hooks.</li>
<li><strong>Custom Regex & Length Rules</strong> — define custom regular expression patterns, min length, and max length rules per field with their own error messages.</li>
<li><strong>Conditional “Required-If” Rules</strong> — make fields required only when a companion field is filled/checked.</li>
<li><strong>Client-Side SWV Integration</strong> — standard validation rules (required, email, length) are injected into CF7’s native SWV engine for instant frontend feedback with full accessibility (A11y) support.</li>
<li><strong>Rule Sets Import/Export & Templates</strong> — export/import validation rules as JSON, copy them from other forms, and bulk apply global templates.</li>
<li><strong>Placeholder Tokens</strong> — use <code>{field_label}</code>, <code>{min}</code>, and <code>{max}</code> in validation messages to generate dynamic texts.</li>
<li><strong>Per-form, per-field</strong> — each form keeps its own messages; no global override.</li>
<li><strong>Stored in post meta</strong> — messages live with the form, compatible with CF7 form duplication and third-party CF7 import/export plugins.</li>
<li><strong>Multilingual via WPML, Polylang & Flavor</strong> — translates rules using standard WPML/Polylang hooks, and features language tabs + one-click AI Translate when Flavor is active.</li>
<li><strong>Developer-friendly</strong> — extensibility hooks <code>vmcf7_loaded</code> and <code>vmcf7_validation_tag_types</code> let you add custom field types.</li>
<li><strong>Lightweight</strong> — no admin bloat, no tracking, no upsells.</li>
</ul>
<h4>Supported field types</h4>
<ul>
<li>Required-field messages: any required tag (<code>text</code>, <code>textarea</code>, <code>select</code>, <code>checkbox</code>, <code>radio</code>, <code>file</code>, etc.).</li>
<li>Invalid-format messages: <code>email</code>, <code>url</code>, <code>tel</code>, <code>number</code> (including <code>range</code>), <code>date</code>, and <code>time</code> fields.</li>
<li>Custom error messages on validation failure: <code>file</code> (size/type checks), <code>acceptance</code> (unchecked/unaccepted state), and <code>quiz</code> (incorrect answer).</li>
<li>HTML inside messages is allowed and sanitized through <code>wp_kses_post()</code>.</li>
<li>Custom Regex and Min/Max Length rules support all input fields (excluding acceptance and quiz).</li>
</ul>
<h4>Translations</h4>
<p>The plugin ships with a <code>.pot</code> file and is already translated into Dutch, German, Russian, Spanish (Chile/Spain). <a href="https://translate.wordpress.org/projects/wp-plugins/validation-muse-for-contact-form-7" rel="nofollow ugc">Help translate it into your language.</a></p>


Validation Muse for Contact Form 7

Custom validation messages, regex, length constraints, required-if conditions, templates sharing, and client-side mirroring via CF7 SWV.

Zbynek Nedoma

<p>This plugin allows you to set custom error messages for Gravity Forms inputs. We support messages for Required, Unique and Email Validation errors.</p>
<h4>Links</h4>
<ul>
<li><a href="https://domaneni.cz/gfcem/" rel="nofollow ugc">Website</a></li>
<li><a href="https://ko-fi.com/domaneni" rel="nofollow ugc">Support</a></li>
</ul>
<h3>Documentation</h3>
<h4>How to use form global settings</h4>
<p>In the settings of each form, you will find the <strong>Custom Error Message</strong> section. Here you can enable them for the entire form and set the default messages to be used for supported fields.</p>
<h4>How to use form field settings</h4>
<p>Use this option if you need to set a custom error message only for a specific field or to override the default message. Go to the <strong>Advanced</strong> Field Settings tab and you will find the <strong>Allow custom error messages</strong> checkbox. Once enabled, you can set a custom message for this field.</p>


Custom Error Messages for Gravity Forms

Adds custom error messages to Gravity Forms inputs

Validation Muse for Contact Form 7 vs Custom Error Messages for Gravity Forms