On all our paid versions, you have the possibility to turn on a captcha verification on your AcyMailing subscription forms in order to only allow human subscriptions.
Invisible recaptcha: enable the captcha
Security key: if you use the subscription via URL and you want to enable the captcha, you will have to add this security key on your subscription via URL (by adding the argument seckey=YOUR_KEY) otherwise the subscription via URL won't work. This key is randomly generated during the install process but you can change it if you want.
The invisible reCaptcha is a Google feature and you need to register your website to use it. You can register it here or by clicking on the Google key fields. Once registered, it will give you some information you should set in the following fields.
Google site key: site key given by Google after registering your website
Google secret key: secret key given by Google after registering your website
Check if the domain exists : If you enable this option, AcyMailing will perform a test on the domain name to make sure the domain exists before allowing the user to subscribe. For example, if a user submits the e-mail address email@example.com then AcyMailing will check if the domain example.com exists and if not, it will not allow the user to subscribe and will ask for a valid e-mail address. This option is turned OFF by default as some hosting companies won't enable you to do this verification but we recommend you to turn it ON and then check again the subscription form to make sure everything is still working fine.
Allowed Files : List of allowed file extensions for the attachments.
Upload Folder : Folder in which the attachments will be uploaded to. Please make sure this folder is writable otherwise AcyMailing won't be able to upload your files in it.
We won't let you compromise your website! Some files will still be blocked even if you allow the extension on your configuration.
Check database integrity: If you click on this button, AcyMailing will perform a few tests to make sure your database structure is up to date. We may add additional tests in the future. You can safely click on it at any time to check your database structure.
V5 data migration: If AcyMailing version 5 was installed on your website when you first installed the version 6, a migration procedure was displayed for your to migrate your data. The bouton is displayed only if tables from the version 5 are still in your database. You can trigger again the migration from here, but it will first delete your version 6 data.