Kickbox Email Validation

Version 1.4.0b1: - New: "EU Account" Global Config option for Kickbox accounts created as EU only (api.eu.kickbox.com) - Change: API requests go to api.kickbox.com (the address in Kickbox's documentation) instead of api.kickbox.io - Change: the API key is sent in the Authorization header instead of the URL, and the Kickbox certificate is verified - Change: Kickbox is asked to finish each check one second before the module stops waiting, so slow checks return a result - Change: updated Global Config help text (hourly check, where to find the API key, kickbox.com link) - Bug Fix: a Kickbox error reply (rate limit, server error) was saved as the user's result, and that user was never checked again - replies saved by earlier versions are removed when the module is updated - Bug Fix: Global Config accepted an invalid API key - a new key is now checked with Kickbox (no verification credit used) - Bug Fix: one user account with an address that is not a valid email address stopped the hourly check for every account after it - Bug Fix: PHP 8 warning on the first email check of each day - Bug Fix: a user unsubscribed for an undeliverable address stayed unsubscribed after changing to a good address - notifications are turned back on when the module turned them off - Bug Fix: changing the email address in Account Settings deleted the stored Kickbox result before the password step, while the account still had the old address - Developer: jrKickbox_check_address() returns FALSE for every Kickbox error reply (new 5th argument receives the error message) - Developer: removed the check for the Kickbox API v1 result "invalid" (API v2 reports undeliverable) Version 1.3.1: - New: Updated to support reporting email deliverability issues in User Browser Version 1.3.0: - New: Added support for checking changed email addresses in Account Settings - New: Signup and Account checks will be attempted even if daily checks value has been met Version 1.2.3: - Change: Revalidation of existing email addresses only includes previously valid addresses Version 1.2.2: - New: Total percent of accounts validated now shows in Test Email Address tool Version 1.2.1: - New: "Summary" of results entry now recorded to the Activity Log after checking addresses Version 1.2.0: - New: "Log Activity" global config option to log successful email checks to Activity Log - New: Kickbox result shows on User Account page if email address is undeliverable or invalid - Change: Email check functionality moved to hourly listener to provide checks throughout the day - Bug Fix: "Validate per Day" setting may not be applied correctly during the email check Version 1.1.1: - Change: Global Config help text change to reflect changes to Kickbox's free plan Version 1.1.0: - New: "Check User Accounts" option in Test Email Addresses tool to check existing user accounts - New: "Signup Check Enabled" Global Config option to check email addresses at signup time - New: Updated to work properly with new Kickbox.io API version 2 - New: If a user address is undeliverable, a notification shows in their Account Settings - Change: Daily email check updated to re-check old addresses if checks are available Version 1.0.1: - Bug Fix: User accounts may not be updated correctly if API returns a balance error Version 1.0.0: - Initial Release