Josh Mckibbin

<p>The <a href="https://kibb.in/ssmtp" rel="nofollow ugc">Simple SMTP Mailer</a> plugin allows you to easily configure WordPress to use SMTP instead of the PHP mail function.</p>
<p><strong>This should only really be used in a development environment.</strong></p>
<h3>Simple SMTP Mailer Settings</h3>
<ul>
<li><strong>Host</strong>: The mail server (Defaults to smtp.gmail.com)</li>
<li><strong>Username</strong>: The username used for connecting to the SMTP server</li>
<li><strong>Password</strong>: The password used for connecting to the SMTP server</li>
<li><strong>Port</strong>: The port to use when sending an email (587, 465 or 25. Defaults to 587)</li>
<li><strong>Security</strong>: The type of encryption security to use when sending an email (TLS or SSL. Defaults to TLS)</li>
<li><strong>Debug</strong>: Enable debugging</li>
</ul>
<p>All settings can be overridden by assigning array values to the SSMTP_MAILER constant in wp-config.php. This is useful for automating local deployment.</p>
<pre><code>define(
    'SSMTP_MAILER',
    array(
        'host' => emailhost.com,
        'username' => username,
        'password' => password,
        'port' => 25,
        'security' => 'SSL'
    )
);
</code></pre>


Simple SMTP Mailer

Simplifies local development by configuring WordPress to use SMTP instead of the PHP mail() function

Marco van Wieren

<p><strong>WPO365 | MS GRAPH MAILER</strong> provides you with a modern, reliable and efficient way to send WordPress transactional emails from one of your Microsoft 365 / Exchange Online / Mail enabled accounts.</p>
<p>The plugin re-configures your WordPress website to send emails using the <strong>Microsoft Graph API</strong> instead of – for example – SMTP. Sending WordPress emails using the <strong>Microsoft Graph API</strong> has become the only available alternative after Microsoft has disabled basic authentication (username and password) over the SMTP protocol.</p>
<h4>DELIVERY</h4>
<ul>
<li>Send WordPress transactional emails from one of your <strong>Microsoft 365 Exchange Online / Mail enabled accounts</strong> using Microsoft Graph instead of – for example – SMTP.</li>
<li>Choose between delegated (send mail as a user) and application-level (send mail as any user) type permissions.</li>
<li>Or: Select either a Microsoft 365 account or a personal Microsoft account, like Hotmail.com or Outlook.com, to send WordPress emails.</li>
<li>Or: Configure <a href="https://learn.microsoft.com/en-us/Exchange/permissions-exo/application-rbac" rel="nofollow ugc">RBAC for Exchange Online</a> and authorize as an application but with a limited scope e.g. one specific mailbox.</li>
</ul>
<h4>SEND AS HTML</h4>
<ul>
<li>Send emails formatted as <strong>HTML</strong>.</li>
</ul>
<h4>SAVE TO SENT ITEMS</h4>
<ul>
<li>Emails sent will be saved in the account’s mailbox in the <strong>Sent Items</strong> folder, further helping to track (successful) mail delivery.</li>
</ul>
<h4>ATTACHMENTS</h4>
<ul>
<li>Send files from your WordPress website as <em>attachments</em>. </li>
</ul>
<h4>WPO365 INSIGHTS</h4>
<ul>
<li><strong>See what matters, when it happens</strong> Track key WPO365 events like sent emails with WPO365 Insights <a href="https://docs.wpo365.com/article/210-wpo365-insights" rel="nofollow ugc">more</a></li>
</ul>
<h4>CONFIGURATION / TEST EMAIL DELIVERY</h4>
<ul>
<li>Easy configuration with detailed step-by-step <a href="https://docs.wpo365.com/article/141-send-email-using-microsoft-graph-mailer" rel="nofollow ugc">Getting started</a> guide and video.</li>
<li>Send <em>test email</em> to recipients incl. CC, BCC and attachment.</li>
</ul>
<p><span class="embed-youtube" style="text-align:center; display: block;"><iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/1CK7Fl8f8iA?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe></span></p>
<p><strong>ADD FUNCTIONALITY WITH PREMIUM EXTENSIONS</strong></p>
<p>The following features can be unlocked with the <a href="https://www.wpo365.com/downloads/wpo365-mail/" rel="nofollow ugc">WPO365 | MAIL</a> extension.</p>
<h4>WPO365 INSIGHTS</h4>
<ul>
<li>Get <strong>WPO35 Alerts</strong> in your inbox when email delivery is failing <a href="https://docs.wpo365.com/article/210-wpo365-insights" rel="nofollow ugc">more</a></li>
</ul>
<h4>Auto-Retry</h4>
<ul>
<li><strong>Log every email</strong> sent from your WordPress website, review errors and (automatically) try to send unsuccessfully <strong>sent mails again</strong>.</li>
</ul>
<h4>LARGE ATTACHMENTS</h4>
<ul>
<li>Add support to send WordPress emails with <strong>attachments larger than 3 MB</strong> using Microsoft Graph.</li>
</ul>
<h4>SEND FROM ALIAS</h4>
<ul>
<li>Send emails from an <strong>alias address</strong> (but submit to Microsoft Graph as the authorized user).</li>
</ul>
<h4>SEND AS / SEND ON BEHALF OF</h4>
<ul>
<li>Send email <strong>as / on behalf of</strong> another user or distribution list.</li>
</ul>
<h4>SHARED MAILBOX</h4>
<ul>
<li>Send email from <strong>Microsoft 365 Shared Mailbox</strong>.</li>
</ul>
<h4>STAGING MODE</h4>
<ul>
<li><strong>Mail Staging Mode</strong> is useful for debugging and staging environments. WordPress emails will be logged and saved in the database instead of being sent.</li>
</ul>
<h4>DYNAMIC SEND-FROM</h4>
<ul>
<li>Allow forms to <strong>override “From”</strong> address e.g allow Contact Form 7 to dynamically configure the account used to send the email from (requires application-level Mail.Send permissions).</li>
</ul>
<h4>MAIL THROTTLE</h4>
<ul>
<li><strong>Throttle</strong> the number of emails sent from your website per minute.</li>
</ul>
<h4>WP-CONFIG FOR AAD SECRETS</h4>
<ul>
<li>Further improve overall security by choosing to store Azure Active Directory secrets in your WordPress WP-Config.php (on disk) and have those secrets removed from the database.</li>
</ul>
<h4>SEND AS BCC</h4>
<ul>
<li>Send emails <strong>as BCC</strong> instead and prevent reply-to-all mail pollution.</li>
</ul>
<h4>REPLY-TO</h4>
<ul>
<li>Configure a <strong>default reply-to</strong> mail address if this should differ from the account’s mail address that is used to send WordPress transactional emails from.</li>
</ul>
<h3>Prerequisites</h3>
<ul>
<li>We have tested our plugin with WordPress >= 5.0 and PHP >= 5.6.40.</li>
<li>You need to be an Entra ID Tenant Administrator to configure both Azure Active Directory and the plugin.</li>
</ul>
<h3>Support</h3>
<p>We will go to great length trying to support you if the plugin doesn’t work as expected. Go to our <a href="https://www.wpo365.com/how-to-get-support/" rel="nofollow ugc">Support Page</a> to get in touch with us. We haven’t been able to test our plugin in all endless possible WordPress configurations and versions so we are keen to hear from you and happy to learn!</p>
<h3>Feedback</h3>
<p>We are keen to hear from you so share your feedback with us on <a href="https://www.linkedin.com/company/downloads-by-van-wieren" rel="nofollow ugc">LinkedIn</a> and help us get better!</p>
<h3>Open Source</h3>
<p>When you’re a developer and interested in the code you should have a look at our repo over at <a href="https://plugins.svn.wordpress.org/wpo365-msgraphmailer/" rel="nofollow ugc">WordPress</a>.</p>


WPO365 | MICROSOFT 365 GRAPH MAILER

I have tried different solutions on different times. But this plugin really works and so much simpler settings. Really good plugin with detailed and easy to follow documentation. 

Thank you so much for this lovely plugin, Marco!

Wow 🤩 it works!!!


Nice plugin to send easy e-mails. Easy to install


WPO 365


Perfect. Now I don't have to worry about this for another 2 years when the password expires 😂 I have created a calendar entry but I wonder if Microsoft will send an email before expiration 🤔



Anyway, thanks a lot!


Just what I needed!

Send WordPress emails from a M365 / Exchange Online Mailbox using Microsoft Graph, leveraging OAuth for authentication which is more secure than SMTP

Simple SMTP Mailer vs WPO365 | MICROSOFT 365 GRAPH MAILER