bytecorestack

<p>SMTP Manager by ByteCore Stack replaces the default WordPress mail function with a fully configurable SMTP connection. Every outgoing email is logged with its delivery status, and an optional health-check cron job monitors your SMTP server and alerts your team on Slack or Microsoft Teams the moment delivery starts failing.</p>
<p><strong>Features</strong></p>
<ul>
<li>Custom SMTP host, port, and encryption (SSL / TLS / none)</li>
<li>Compatible with Gmail App Passwords, Outlook / Office 365, and any standard SMTP provider</li>
<li>Custom From name and From email address</li>
<li>Full email log — date, subject, sender, recipient, status, and error message</li>
<li>Searchable and filterable log with date-range presets (today through all time)</li>
<li>CSV export of the email log</li>
<li>Automated SMTP health monitoring via WordPress Cron (TCP-only, no email sent)</li>
<li>Slack and Microsoft Teams webhook alerts on consecutive SMTP failures</li>
<li>Configurable failure threshold and maximum notification count</li>
<li>One-click “Send Test Email” to verify your SMTP configuration instantly</li>
<li>Scheduled HTML email delivery reports (daily / weekly / monthly)</li>
<li>Automatic log pruning — keep the last 30 days or the last 1,000 records</li>
<li>Dark-mode admin UI</li>
</ul>
<h3>External Services</h3>
<p>This plugin may contact the following external services. All connections are either user-initiated or require explicit configuration by the site administrator.</p>
<p><strong>1. Your SMTP server (user-configured)</strong><br />
The plugin routes all WordPress emails through the SMTP server credentials you enter in Settings <span aria-hidden="true" class="wp-exclude-emoji">→</span> SMTP Manager. The hostname, port, username, and password are provided entirely by you. No data is sent to any ByteCore Stack server.</p>
<p><strong>2. Slack Incoming Webhooks (optional)</strong><br />
If you enable Slack alerts, the plugin will POST a JSON failure notification to the Slack Incoming Webhook URL you provide when consecutive SMTP failures are detected. This URL is specific to your Slack workspace and is created by you.<br />
* Service: Slack Technologies, LLC<br />
* Privacy policy: https://slack.com/privacy-policy<br />
* Terms of service: https://slack.com/terms-of-service</p>
<p><strong>3. Microsoft Teams Incoming Webhooks (optional)</strong><br />
If you enable Teams alerts, the plugin will POST a JSON failure notification to the Teams Incoming Webhook URL you provide when consecutive SMTP failures are detected. This URL is specific to your Teams channel and is created by you.<br />
* Service: Microsoft Corporation<br />
* Privacy policy: https://privacy.microsoft.com/en-us/privacystatement<br />
* Terms of service: https://www.microsoft.com/en-us/servicesagreement</p>
<p><strong>4. Google Fonts API</strong><br />
The admin settings page loads two typefaces (DM Sans and DM Mono) from the Google Fonts API to render the admin UI. This request is made only by the administrator’s browser when visiting the plugin settings page. No personal data from site visitors is ever transmitted.<br />
* Service: Google LLC<br />
* Privacy policy: https://policies.google.com/privacy<br />
* Terms of service: https://policies.google.com/terms<br />
* Font API endpoint: https://fonts.googleapis.com/</p>
<p>No data is collected, transmitted to, or processed by ByteCore Stack servers.</p>


SMTP Manager by ByteCore Stack

Send WordPress emails via SMTP. Logs deliveries, monitors SMTP health via WP-Cron, and alerts on Slack or Microsoft Teams when sending fails.

smtpdkim

<p>🚨 Are your WordPress emails going to spam?</p>
<p>Without proper email authentication, services like Gmail, Outlook, and Yahoo may block or mark your emails as spam. This results in lost notifications, password resets, and order emails.</p>
<p>SignEmail SMTP helps you send reliable WordPress emails using professional SMTP servers, with optional DKIM authentication support.</p>
<h4>Why email authentication matters</h4>
<p>Modern email providers require proper authentication (SPF, DKIM, DMARC) to trust your messages. Without it, even valid emails may be filtered as spam.</p>
<h4>📬 SMTP Email Delivery</h4>
<p>Send all WordPress emails through reliable SMTP servers instead of PHP mail(), improving deliverability and consistency.</p>
<h4>⚙️ Universal SMTP Compatibility</h4>
<p>Compatible with Gmail, Outlook, Brevo, cPanel, OVH, Infomaniak, SiteGround, GoDaddy, Bluehost, WP Engine, Kinsta, Namecheap, Gandi, o2switch, LWS, and more.</p>
<h4>🔍 Email Testing Tool</h4>
<p>Send test emails to verify inbox delivery and diagnose spam placement in real conditions.</p>
<h4>🔎 DNS Diagnostic Tool</h4>
<p>Check SPF, DKIM, and DMARC records using Cloudflare DNS-over-HTTPS.</p>
<h4>🔒 Secure Storage</h4>
<p>SMTP credentials are encrypted using AES-256-CBC and stored securely in your WordPress database.</p>
<h4>🌐 Multilingual Support</h4>
<p>Full French and English interface with per-user language selection.</p>
<h4>SMTP Features</h4>
<ul>
<li>Full SMTP configuration (SSL / TLS / STARTTLS / None)</li>
<li>Encrypted password storage (AES-256-CBC)</li>
<li>Force sender email and name</li>
<li>Debug logging system</li>
<li>Built-in email test tool</li>
<li>DNS verification (SPF / DKIM / DMARC)</li>
<li>Compatible with WooCommerce, CF7, Elementor, Gravity Forms, BuddyPress, LearnDash, etc.</li>
<li>Fully intercepts wp_mail()</li>
</ul>
<h4>Optional DKIM Support</h4>
<p>DKIM email signing is available in the <strong>Premium version</strong> of this plugin — smtp-dkim.com.</p>
<ul>
<li>Works alongside SMTP delivery</li>
<li>Improves inbox trust and deliverability</li>
</ul>
<h4>Security & Privacy</h4>
<ul>
<li>SMTP credentials encrypted before storage</li>
<li>No credentials are sent to external servers</li>
<li>License verification (if used) only transmits license key + domain name</li>
<li>No email content is ever transmitted externally</li>
</ul>
<h3>External Services</h3>
<p>This plugin connects to the following external services:</p>
<h4>1. Cloudflare DNS-over-HTTPS</h4>
<p>Used by the DNS Diagnostic tool to check SPF, DKIM, and DMARC records.</p>
<ul>
<li>Service: Cloudflare DNS-over-HTTPS API</li>
<li>Endpoint: https://cloudflare-dns.com/dns-query</li>
<li>Data sent: Domain name and DKIM selector (no personal data)</li>
<li>When: Only when the admin manually runs the DNS diagnostic tool</li>
<li>Terms of Service: https://www.cloudflare.com/terms/</li>
<li>Privacy Policy: https://www.cloudflare.com/privacypolicy/</li>
</ul>
<h4>2. User-configured SMTP server</h4>
<p>Used to deliver WordPress emails via the SMTP protocol.</p>
<ul>
<li>Service: Any SMTP server configured by the site administrator (e.g. Gmail, Outlook, Brevo, cPanel)</li>
<li>Data sent: Email content as configured by WordPress (wp_mail)</li>
<li>When: Every time WordPress sends an email</li>
<li>Terms of Service and Privacy Policy: Refer to your SMTP provider</li>
</ul>
<h4>3. smtp-dkim.com — License validation (Premium version only)</h4>
<p>The Premium version validates the license key to enable DKIM signing.</p>
<ul>
<li>Endpoint: https://smtp-dkim.com/wp-json/sdlm/v1/validate</li>
<li>Data sent: License key + domain name only — no email content, no SMTP credentials</li>
<li>When: On plugin activation and periodically in the background</li>
<li>Terms of Service: https://smtp-dkim.com/politique-de-confidentialite/</li>
<li>Privacy Policy: https://smtp-dkim.com/politique-de-confidentialite/</li>
</ul>
<p>Note: The free version available on WordPress.org does not include license validation or DKIM signing.</p>


SignEmail SMTP & DNS Diagnostic

Stop WordPress emails from going to spam. Send emails via SMTP and check SPF, DKIM, DMARC records to improve email deliverability.

SMTP Manager by ByteCore Stack vs SignEmail SMTP & DNS Diagnostic