Serhii Symonov

Validation Muse for Contact Form 7 lets you override the default error copy that Contact Form 7 displays. Enable the plugin per form, then supply custom text for required notices and invalid email, URL, telephone, number, range, and date validation. Messages are stored in post meta so they stay with the form when you export/import.
Features:
<ul>
<li>Customize “required field” messages per field</li>
<li>Customize “invalid format” messages for email, URL, phone, number, range, and date fields</li>
<li>Enable/disable custom validation per form</li>
<li>Messages stored in post meta for easy export/import</li>
<li>Fully translatable with POT file included</li>
<li>Accessible admin interface with ARIA labels</li>
</ul>

Validation Muse for Contact Form 7

Fine-tune the validation copy for every Contact Form 7 field directly inside the form editor.

straint

Translate default Contact Form 7 messages without changing WordPress profile language.
Default supported languages: 
AR, BEL, BG, CA, CS, DA, DE, EL, EN-AU, EN-CA, EN-GB, EN-NZ, EN-ZA, ES, ES-AR, ET, FA, FI, FR, FR-CA, GL, HR, HU, IT, JA, KO, LT, NB, NL, NN, PL, PT, PT-BR, RO, RU, SK, SQ, SV, TR, UK, VI, ZH-CN, ZH-TW
How to add more languages: 
To add languages, you have to download translations from the <a href="https://translate.wordpress.org/projects/wp-plugins/contact-form-7" rel="nofollow ugc">official page of Contact Form 7 on translate.wordpress.org</a>. Click on a language and a new page will open. Always choose the “Stable (latest release)”. Another page with all the string translations will appear, scroll down to the end of the table and just under the Legend, click on “Export as JSON”. Move the downloaded translations files to /your-theme/cftmsg_translations folder (create it if does not exists).

Contact Form 7 Translate Messages Extension

This plugin saves a lot of time! It works great with CF7 5.4 and WP 5.7.1.


Lifesaver!

Great plugin! Thanks for saving me some time! :-)

Saving time!

Translate default Contact Form 7 messages without changing WordPress profile language.

Validation Muse for Contact Form 7 vs Contact Form 7 Translate Messages Extension