Changelog

Routing rules. Send some of your mail through a different mailer from the rest: a shop's order emails through one provider, contact-form mail through another. A rule matches on the From address, the recipient's domain, the plugin or theme that sent the message, or words in the subject; the first rule that matches picks the mailer, and everything else goes through your primary as before. Set rules up under Settings → Routing rules. The email log shows which rule routed each message, and the test email on Tools can be sent "as if from" a plugin to check a rule.

Alert channels. Failure alerts can be posted to any number of channels as well as emailed: Slack, Microsoft Teams, Discord, or a webhook of your own (JSON). Each channel has its own quiet period, a "Send test alert" button, and a second message when sending works again. A message your backup mailer already delivered still raises no alarm.

Two more mailers: Mandrill (Mailchimp Transactional) and SMTP.com. Mandrill's signed delivery reports are read, so its messages show Delivered, Bounced and Spam complaint in the log; SMTP.com's are not yet, so its messages stay "Sent". Delivery events also come in from SparkPost, now a free mailer.

WP-CLI. `wp cybexsoft-smtp license status|activate|deactivate` and `wp cybexsoft-smtp report send`, alongside the free plugin's commands. Settings exported with `wp cybexsoft-smtp settings export` include the Pro settings and routing rules; the licence, OAuth tokens and webhook keys stay on the site they belong to.

Multisite. Pro's mailers are set up per site. Deleting a site now deletes its archived messages and delivery records too.

Fix: a message retried from the queue through a Pro mailer could be logged twice.

Requires Cybexsoft SMTP 1.1.0 or later, now on WordPress.org. With an older free plugin, routing rules, alert channels and the new commands stay hidden and everything else works as before.

Delivery events. Your mail provider can now tell your site what happened after it accepted a message. The email log shows Delivered, Deferred, Bounced or Spam complaint, and each message shows the provider's reports in the log viewer. It works with Amazon SES, SendGrid, Mailgun, Postmark, Brevo, SMTP2GO, Resend, MailerSend, Mailjet, Elastic Email and ZeptoMail. Set it up from a new Delivery events card when you edit the mailer: it gives you the webhook URL to paste into your provider's dashboard. Gmail and Outlook can't report back, and their cards say so.

Smarter auto-blocking. A hard bounce reported by your provider now counts towards auto-blocking, even when the message was accepted at send time. An address that marks your mail as spam is blocked straight away.

Delivery rates. Once a provider is reporting, the dashboard and the weekly report show delivered, bounced and spam-complaint rates. You can also get an alert when the bounce rate over 24 hours passes a level you choose (Settings → Failure alerts).

Requires Cybexsoft SMTP 1.0.7 or later for delivery events. With an older version everything else works as before.

Cybexsoft SMTP Pro

• Failover is now locked until there is a backup to fail over to. With only one mailer set up, or several but none set to Backup, the failover options are shown switched off, with a message and buttons to add a second mailer or choose a backup. "Test the backup now" appears once a backup is standing by. Your saved failover setting is kept.
• Works best with the free Cybexsoft SMTP 1.0.5, which carries the styles for the new message and a deliverability score that now counts failed and held mail.

Cybexsoft SMTP Pro

• Updates now arrive automatically: new versions appear under Dashboard → Updates while your licence is active.
• The add-on's folder is now cybexsoft-smtp-pro (it was cybex-smtp-pro), to match Cybexsoft SMTP on WordPress.org.

Upgrading from an earlier copy: deactivate and delete the old Cybexsoft SMTP Pro first, then upload and activate this one. Your settings, email log and licence carry over.

Requires the free Cybexsoft SMTP plugin from WordPress.org.