codemasterhub

<p>DeliveryKit SMTP helps you send WordPress emails using SMTP or supported mail APIs.</p>
<p>Free version features:<br />
* SMTP and API based email delivery<br />
* Default PHP Mail plus one configured SMTP/API connection<br />
* Email testing<br />
* Email logging<br />
* Settings import and export<br />
* Retention cleanup<br />
* Summary email reports</p>
<p>For more features, see <a href="https://codemasterhub.com/items/deliverykitsmtp-pro/" rel="nofollow ugc">DeliveryKit SMTP Pro</a>.</p>
<h3>External services</h3>
<p>DeliveryKit SMTP only connects to the mail provider that you configure. No provider API requests are made until you configure and use a provider connection, complete an OAuth authorization flow, verify a provider account, send a test email, or send a WordPress email through that provider.</p>
<h4>Google (Gmail) API</h4>
<p>Used to authorize Gmail sending and deliver mail through the Gmail API. When this mailer is configured or used, the plugin sends OAuth requests, access and refresh tokens, sender profile lookups, and the sender, recipient, subject, message body, and attachment data required to deliver the email.</p>
<p>Terms: <a href="https://policies.google.com/terms" rel="nofollow ugc">https://policies.google.com/terms</a><br />
Privacy: <a href="https://policies.google.com/privacy" rel="nofollow ugc">https://policies.google.com/privacy</a></p>
<h4>Microsoft 365 / Outlook</h4>
<p>Used to authorize Microsoft 365 or Outlook sending and deliver mail through Microsoft Graph. When this mailer is configured or used, the plugin sends OAuth requests, access and refresh tokens, account profile lookups, and the sender, recipient, subject, message body, and attachment data required to deliver the email.</p>
<p>Terms: <a href="https://www.microsoft.com/servicesagreement" rel="nofollow ugc">https://www.microsoft.com/servicesagreement</a><br />
Privacy: <a href="https://privacy.microsoft.com/privacystatement" rel="nofollow ugc">https://privacy.microsoft.com/privacystatement</a></p>
<h4>Zoho Mail</h4>
<p>Used to authorize Zoho Mail sending and deliver mail through Zoho APIs. When this mailer is configured or used, the plugin sends OAuth requests, access and refresh tokens, account lookups, and the sender, recipient, subject, message body, and attachment data required to deliver the email.</p>
<p>Terms: <a href="https://www.zoho.com/terms.html" rel="nofollow ugc">https://www.zoho.com/terms.html</a><br />
Privacy: <a href="https://www.zoho.com/privacy.html" rel="nofollow ugc">https://www.zoho.com/privacy.html</a></p>
<h4>Transactional email provider APIs</h4>
<p>If you configure one of the API mailers below, the plugin sends the sender, recipient, subject, message body, headers, attachment data, and the authentication credential required by that provider, such as an API key, access token, SMTP username, or SMTP password, whenever WordPress sends an email or you run a test email.</p>
<ul>
<li>Brevo – Terms: <a href="https://www.brevo.com/legal/termsofuse/" rel="nofollow ugc">https://www.brevo.com/legal/termsofuse/</a> | Privacy: <a href="https://www.brevo.com/legal/privacypolicy/" rel="nofollow ugc">https://www.brevo.com/legal/privacypolicy/</a></li>
<li>SendLayer – Terms: <a href="https://sendlayer.com/terms-of-service/" rel="nofollow ugc">https://sendlayer.com/terms-of-service/</a> | Privacy: <a href="https://sendlayer.com/privacy-policy/" rel="nofollow ugc">https://sendlayer.com/privacy-policy/</a></li>
<li>SMTP.com – Terms: <a href="https://www.smtp.com/policies/terms-and-conditions/" rel="nofollow ugc">https://www.smtp.com/policies/terms-and-conditions/</a> | Privacy: <a href="https://www.smtp.com/policies/privacy-policy/" rel="nofollow ugc">https://www.smtp.com/policies/privacy-policy/</a></li>
<li>Amazon SES – Terms: <a href="https://aws.amazon.com/service-terms/" rel="nofollow ugc">https://aws.amazon.com/service-terms/</a> | Privacy: <a href="https://aws.amazon.com/privacy/" rel="nofollow ugc">https://aws.amazon.com/privacy/</a></li>
<li>SendGrid – Terms: <a href="https://www.twilio.com/legal/tos" rel="nofollow ugc">https://www.twilio.com/legal/tos</a> | Privacy: <a href="https://www.twilio.com/legal/privacy" rel="nofollow ugc">https://www.twilio.com/legal/privacy</a></li>
<li>Elastic Email – Terms: <a href="https://elasticemail.com/resources/usage-policies/terms-of-use" rel="nofollow ugc">https://elasticemail.com/resources/usage-policies/terms-of-use</a> | Privacy: <a href="https://elasticemail.com/resources/usage-policies/privacy-policy" rel="nofollow ugc">https://elasticemail.com/resources/usage-policies/privacy-policy</a></li>
<li>Mailgun – Terms: <a href="https://www.mailgun.com/terms/" rel="nofollow ugc">https://www.mailgun.com/terms/</a> | Privacy: <a href="https://www.mailgun.com/privacy-policy/" rel="nofollow ugc">https://www.mailgun.com/privacy-policy/</a></li>
<li>Mailjet – Terms: <a href="https://www.mailjet.com/legal/terms/" rel="nofollow ugc">https://www.mailjet.com/legal/terms/</a> | Privacy: <a href="https://www.mailjet.com/legal/privacy-policy/" rel="nofollow ugc">https://www.mailjet.com/legal/privacy-policy/</a></li>
<li>MailerSend – Terms: <a href="https://www.mailersend.com/legal/terms-of-use" rel="nofollow ugc">https://www.mailersend.com/legal/terms-of-use</a> | Privacy: <a href="https://www.mailersend.com/legal/privacy-policy" rel="nofollow ugc">https://www.mailersend.com/legal/privacy-policy</a></li>
<li>Mandrill / Mailchimp Transactional – Terms: <a href="https://mailchimp.com/legal/terms/" rel="nofollow ugc">https://mailchimp.com/legal/terms/</a> | Privacy: <a href="https://mailchimp.com/legal/privacy/" rel="nofollow ugc">https://mailchimp.com/legal/privacy/</a></li>
<li>Postmark – Terms: <a href="https://postmarkapp.com/terms-of-service" rel="nofollow ugc">https://postmarkapp.com/terms-of-service</a> | Privacy: <a href="https://postmarkapp.com/privacy-policy" rel="nofollow ugc">https://postmarkapp.com/privacy-policy</a></li>
<li>Resend – Terms: <a href="https://resend.com/legal/terms-of-service" rel="nofollow ugc">https://resend.com/legal/terms-of-service</a> | Privacy: <a href="https://resend.com/legal/privacy-policy" rel="nofollow ugc">https://resend.com/legal/privacy-policy</a></li>
<li>SMTP2GO – Terms: <a href="https://www.smtp2go.com/terms/" rel="nofollow ugc">https://www.smtp2go.com/terms/</a> | Privacy: <a href="https://www.smtp2go.com/privacy/" rel="nofollow ugc">https://www.smtp2go.com/privacy/</a></li>
<li>SparkPost – Terms: <a href="https://bird.com/terms" rel="nofollow ugc">https://bird.com/terms</a> | Privacy: <a href="https://bird.com/privacy" rel="nofollow ugc">https://bird.com/privacy</a></li>
<li>Netcore / Pepipost – Terms: <a href="https://netcorecloud.com/terms-of-service/" rel="nofollow ugc">https://netcorecloud.com/terms-of-service/</a> | Email API Terms: <a href="https://netcorecloud.com/email-api-terms-and-policies/" rel="nofollow ugc">https://netcorecloud.com/email-api-terms-and-policies/</a> | Privacy: <a href="https://netcorecloud.com/privacy-policy/" rel="nofollow ugc">https://netcorecloud.com/privacy-policy/</a></li>
<li>Other SMTP – This mailer connects directly to the SMTP server that you enter in the plugin settings. Terms and privacy depend on your chosen mail server provider.</li>
</ul>


DeliveryKit SMTP

SMTP and API email delivery for WordPress with testing, logging, and summary reports.

Benjamin Buddle

<p>I have issues with my hosting service not allowing me to easily set the ‘From line’ for my server email. Whenever a new user signs up they see username@hostingservice.com even though they should see user@site.com. Before Send From you would be required to modify your installation of WordPress just about every time you do an update. No longer! With Send From, you simply go into your admin panel and set what the end user will see on their emails from line.</p>
<h3>Support Questions</h3>
<p>If there are any issues that crop up, I will be happy to take a look at solving them. However, due to many factors, I can’t offer active support for the plugin.</p>
<h3>Security</h3>
<p>CVE: CVE-2025-46469 – Cross-site scripting (Stored XSS) in plugin settings.</p>
<p>Summary: A stored XSS issue was reported in older versions of this plugin where un-sanitized input saved in plugin options could later be rendered into the admin interface without proper escaping. The repository has been updated to sanitize incoming option values and escape output when rendering form fields. The plugin also validates the test-send email address.</p>
<p>Mitigation applied in this repository:<br />
– Sanitize email values with WordPress’ sanitize_email() before saving.<br />
– Sanitize name fields with sanitize_text_field() before saving.<br />
– Escape values when printed into HTML attributes using esc_attr().<br />
– Validate test-send addresses with is_email() and refuse to save invalid addresses.</p>


Send From

Simple and effective

Plugin for modifying the from line on all emails coming from WordPress.

DeliveryKit SMTP vs Send From