Which version of PHP GD Mail Queue Pro plugin requires?
GD Mail Queue Pro plugin requires one of the following PHP versions: 7.0, 7.1, 7.2, 7.3, 7.4, 8.0. The plugin might work with older PHP versions, but they are no longer tested or supported.
Which version of WordPress GD Mail Queue Pro plugin requires?
GD Mail Queue Pro plugin requires one of the following WordPress versions: 5.0, 5.1, 5.2, 5.3, 5.4, 5.5, 5.6. The plugin might work with older WordPress versions, but they are no longer tested or supported.
Which version of ClassicPress (WordPress fork) GD Mail Queue Pro plugin requires?
GD Mail Queue Pro plugin requires one of the following ClassicPress versions: 1.0, 1.1, 1.2.
How old is GD Mail Queue Pro plugin?
GD Mail Queue Pro plugin is 4 years, 1 month old.
When was GD Mail Queue Pro plugin first version released?
GD Mail Queue Pro plugin was first released on May 2, 2019.
When was GD Mail Queue Pro plugin latest version released?
GD Mail Queue Pro plugin latest version 5.4 was released on August 27, 2022.
Where can I find list of changes in all GD Mail Queue Pro plugin releases?
The detailed changelog for GD Mail Queue Pro plugin is available here: GD Mail Queue Pro Changelog.
Is GD Mail Queue Pro plugin compatible with bbPress plugin?
GD Mail Queue Pro plugin supports one of the following bbPress plugin versions: 2.6.
Is GD Mail Queue Pro plugin compatible with BuddyPress plugin?
GD Mail Queue Pro plugin supports one of the following BuddyPress plugin versions: . GD Mail Queue Pro should work with older BuddyPress versions, but we support only most recent BuddyPress versions.
Is GD Mail Queue Pro plugin compatible with WooCommerce plugin?
GD Mail Queue Pro plugin supports one of the following WooCommerce plugin versions: . GD Mail Queue Pro should work with older WooCommerce versions, but we support only most recent WooCommerce versions.
Can I translate GD Mail Queue Pro plugin to my language?

Yes. POT file is provided as a base for translation in the root folder for each plugin. Translation files should go into languages directory, and WordPress must be set to your language to load the file. As an alternative, translation file can go into wp-content/languages/plugins directory.

The file name for translated and compiled MO file must be the same as POT file with the addition of language code: {plugin-name}-{language-code}.mo.

You can check out this for translating plugins using POEdit program:
support.dev4press.com/kb/article/translating-plugins-or-themes-using-poedit

Does GD Mail Queue Pro plugin works with WordPress MultiSite installations?

Yes. Each site in the network can activate and use the plugin.

Does GD Mail Queue Pro plugin support BuddyPress?

Yes.

If you use BuddyPress HTML emails feature, it will work as expected, and GD Mail Queue will handle these emails without turning them into HTML. You can also use an option in GD Mail Queue to force BuddyPress to send plain text emails and GD Mail Queue will turn them into HTML emails.

Does GD Mail Queue Pro plugin supports other REST API based sending plugins?

No.

All plugins that send emails to various services using REST API or some other API to connect to services, are always replace wp_mail() function making it impossible for my plugin to detect emails and work with them. Also, GD Mail Queue can’t use third-party plugins to send emails, because there is no universal interface for this that all plugins can implement and use.

Does GD Mail Queue Pro plugin supports other SMTP sending plugins?

No.

But, GD Mail Queue has support for SMTP email sending, and you can add your SMTP server information for plugin to use for all emails and/or queue emails. If you need to use REST API for email sending or you want to use predefined SMTP sending services through PHPMailer, GD Mail Queue Pro supports several popular email services using official REST API libraries and SMTP sending to.

Does GD Mail Queue Pro plugin replace wp_mail() function?

No.

Most email sending plugins start by replacing wp_mail() function in WordPress making it hard for other plugins to do anything related to email sending. GD Mail Queue plugin doesn’t replace this function (or any other WordPress function), and it is relying on that core function to intercept and determine if the email should be turned in HTML or added to the queue.

Can I translate GD Mail Queue Pro plugin to my language?

All Dev4Press free and lite plugins can be translated via WordPress.org and their translation services. Each plugin on WordPress.org has support for translation, and you can get to it through the plugin Developer panel. To translate plugins on WordPress.org, you need a WordPress.org account. But, if you want to handle translations on your own, each plugin has a POT file with the list of all translation strings