wp_mail_smtp.php — WP Mail SMTP by WPForms – The Most Popular SMTP and Email Log Plugin 3.2.0

wp-mail-smtp / wp_mail_smtp.php

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wp_mail_smtp.php

247 lines

1	<?php
2	/**
3	* Plugin Name: WP Mail SMTP
4	* Version: 3.2.0
5	* Requires at least: 4.9
6	* Requires PHP: 5.6.20
7	* Plugin URI: https://wpmailsmtp.com/
8	* Description: Reconfigures the <code>wp_mail()</code> function to use Gmail/Mailgun/SendGrid/SMTP instead of the default <code>mail()</code> and creates an options page to manage the settings.
9	* Author: WPForms
10	* Author URI: https://wpforms.com/
11	* Network: false
12	* Text Domain: wp-mail-smtp
13	* Domain Path: /assets/languages
14	*/
15
16	/**
17	* @author WPForms
18	* @copyright WPForms, 2007-21, All Rights Reserved
19	* This code is released under the GPL licence version 3 or later, available here
20	* https://www.gnu.org/licenses/gpl.txt
21	*/
22
23	/**
24	* Setting options in wp-config.php
25	*
26	* Specifically aimed at WP Multisite users, you can set the options for this plugin as
27	* constants in wp-config.php. Copy the code below into wp-config.php and tweak settings.
28	* Values from constants are NOT stripslash()'ed.
29	*
30	* When enabled, make sure to comment out (at the beginning of the line using //) those constants that you do not need,
31	* or remove them completely, so they won't interfere with plugin settings.
32	*/
33
34	/*
35	define( 'WPMS_ON', true ); // True turns on the whole constants support and usage, false turns it off.
36
37	define( 'WPMS_DO_NOT_SEND', true ); // Or false, in that case constant is ignored.
38
39	define( 'WPMS_MAIL_FROM', 'mail@example.com' );
40	define( 'WPMS_MAIL_FROM_FORCE', true ); // True turns it on, false turns it off.
41	define( 'WPMS_MAIL_FROM_NAME', 'From Name' );
42	define( 'WPMS_MAIL_FROM_NAME_FORCE', true ); // True turns it on, false turns it off.
43	define( 'WPMS_MAILER', 'sendinblue' ); // Possible values: 'mail', 'smtpcom', 'sendinblue', 'mailgun', 'sendgrid', 'gmail', 'smtp'.
44	define( 'WPMS_SET_RETURN_PATH', true ); // Sets $phpmailer->Sender if true, relevant only for Other SMTP mailer.
45
46	// Recommended mailers.
47	define( 'WPMS_SMTPCOM_API_KEY', '' );
48	define( 'WPMS_SMTPCOM_CHANNEL', '' );
49	define( 'WPMS_SENDINBLUE_API_KEY', '' );
50	define( 'WPMS_SENDINBLUE_DOMAIN', '' );
51
52	define( 'WPMS_ZOHO_DOMAIN', '' );
53	define( 'WPMS_ZOHO_CLIENT_ID', '' );
54	define( 'WPMS_ZOHO_CLIENT_SECRET', '' );
55
56	define( 'WPMS_PEPIPOST_API_KEY', '' );
57
58	define( 'WPMS_SENDINBLUE_API_KEY', '' );
59
60	define( 'WPMS_MAILGUN_API_KEY', '' );
61	define( 'WPMS_MAILGUN_DOMAIN', '' );
62	define( 'WPMS_MAILGUN_REGION', 'US' ); // or 'EU' for Europe.
63
64	define( 'WPMS_SENDGRID_API_KEY', '' );
65
66	define( 'WPMS_GMAIL_CLIENT_ID', '' );
67	define( 'WPMS_GMAIL_CLIENT_SECRET', '' );
68
69	define( 'WPMS_SMTP_HOST', 'localhost' ); // The SMTP mail host.
70	define( 'WPMS_SMTP_PORT', 25 ); // The SMTP server port number.
71	define( 'WPMS_SSL', '' ); // Possible values '', 'ssl', 'tls' - note TLS is not STARTTLS.
72	define( 'WPMS_SMTP_AUTH', true ); // True turns it on, false turns it off.
73	define( 'WPMS_SMTP_USER', 'username' ); // SMTP authentication username, only used if WPMS_SMTP_AUTH is true.
74	define( 'WPMS_SMTP_PASS', 'password' ); // SMTP authentication password, only used if WPMS_SMTP_AUTH is true.
75	define( 'WPMS_SMTP_AUTOTLS', true ); // True turns it on, false turns it off.
76	*/
77
78	/**
79	* Don't allow multiple versions of 1.5.x (Lite and Pro) and above to be active.
80	*
81	* @since 1.5.0
82	*/
83	if ( function_exists( 'wp_mail_smtp' ) ) {
84
85	if ( ! function_exists( 'wp_mail_smtp_deactivate' ) ) {
86	/**
87	* Deactivate if plugin already activated.
88	* Needed when transitioning from 1.5+ Lite to Pro.
89	*
90	* @since 1.5.0
91	*/
92	function wp_mail_smtp_deactivate() {
93	/*
94	* Prevent issues of WP functions not being available for other plugins that hook into
95	* this early deactivation. GH issue #861.
96	*/
97	require_once ABSPATH . WPINC . '/pluggable.php';
98
99	deactivate_plugins( plugin_basename( __FILE__ ) );
100	}
101	}
102	add_action( 'admin_init', 'wp_mail_smtp_deactivate' );
103
104	// Do not process the plugin code further.
105	return;
106	}
107
108	if ( ! function_exists( 'wp_mail_smtp_check_pro_loading_allowed' ) ) {
109	/**
110	* Don't allow 1.4.x and below to break when 1.5+ Pro is activated.
111	* This will stop the current plugin from loading and display a message in admin area.
112	*
113	* @since 1.5.0
114	*/
115	function wp_mail_smtp_check_pro_loading_allowed() {
116
117	// Check for pro without using wp_mail_smtp()->is_pro(), because at this point it's too early.
118	if ( ! is_readable( rtrim( plugin_dir_path( __FILE__ ), '/\\' ) . '/src/Pro/Pro.php' ) ) {
119	// Currently, not a pro version of the plugin is loaded.
120	return false;
121	}
122
123	if ( ! function_exists( 'is_plugin_active' ) ) {
124	require_once ABSPATH . '/wp-admin/includes/plugin.php';
125	}
126
127	// Search for old plugin name.
128	if ( is_plugin_active( 'wp-mail-smtp/wp_mail_smtp.php' ) ) {
129	/*
130	* Prevent issues of WP functions not being available for other plugins that hook into
131	* this early deactivation. GH issue #861.
132	*/
133	require_once ABSPATH . WPINC . '/pluggable.php';
134
135	// As Pro is loaded and Lite too - deactivate silently itself not to break older SMTP plugin.
136	deactivate_plugins( plugin_basename( __FILE__ ) );
137
138	add_action( 'admin_notices', 'wp_mail_smtp_lite_deactivation_notice' );
139
140	return true;
141	}
142
143	return false;
144	}
145
146	if ( ! function_exists( 'wp_mail_smtp_lite_deactivation_notice' ) ) {
147	/**
148	* Display the notice after deactivation.
149	*
150	* @since 1.5.0
151	*/
152	function wp_mail_smtp_lite_deactivation_notice() {
153
154	echo '<div class="notice notice-warning"><p>' . esc_html__( 'Please deactivate the free version of the WP Mail SMTP plugin before activating WP Mail SMTP Pro.', 'wp-mail-smtp' ) . '</p></div>';
155
156	if ( isset( $_GET['activate'] ) ) { // phpcs:ignore
157	unset( $_GET['activate'] ); // phpcs:ignore
158	}
159	}
160	}
161
162	// Stop the plugin loading.
163	if ( wp_mail_smtp_check_pro_loading_allowed() === true ) {
164	return;
165	}
166	}
167
168	if ( ! function_exists( 'wp_mail_smtp_insecure_php_version_notice' ) ) {
169	/**
170	* Display admin notice, if the server is using old/insecure PHP version.
171	*
172	* @since 2.0.0
173	*/
174	function wp_mail_smtp_insecure_php_version_notice() {
175
176	?>
177	<div class="notice notice-error">
178	<p>
179	<?php
180	printf(
181	wp_kses( /* translators: %1$s - WPBeginner URL for recommended WordPress hosting. */
182	__( 'Your site is running an <strong>insecure version</strong> of PHP that is no longer supported. Please contact your web hosting provider to update your PHP version or switch to a <a href="%1$s" target="_blank" rel="noopener noreferrer">recommended WordPress hosting company</a>.', 'wp-mail-smtp' ),
183	array(
184	'a' => array(
185	'href' => array(),
186	'target' => array(),
187	'rel' => array(),
188	),
189	'strong' => array(),
190	)
191	),
192	'https://www.wpbeginner.com/wordpress-hosting/'
193	);
194	?>
195	<br><br>
196	<?php
197	printf(
198	wp_kses( /* translators: %s - WPMailSMTP.com docs URL with more details. */
199	__( '<strong>WP Mail SMTP plugin is disabled</strong> on your site until you fix the issue. <a href="%s" target="_blank" rel="noopener noreferrer">Read more for additional information.</a>', 'wp-mail-smtp' ),
200	array(
201	'a' => array(
202	'href' => array(),
203	'target' => array(),
204	'rel' => array(),
205	),
206	'strong' => array(),
207	)
208	),
209	'https://wpmailsmtp.com/docs/supported-php-versions-for-wp-mail-smtp/'
210	);
211	?>
212	</p>
213	</div>
214
215	<?php
216
217	// In case this is on plugin activation.
218	if ( isset( $_GET['activate'] ) ) { //phpcs:ignore
219	unset( $_GET['activate'] ); //phpcs:ignore
220	}
221	}
222	}
223
224	if ( ! defined( 'WPMS_PLUGIN_VER' ) ) {
225	define( 'WPMS_PLUGIN_VER', '3.2.0' );
226	}
227	if ( ! defined( 'WPMS_PHP_VER' ) ) {
228	define( 'WPMS_PHP_VER', '5.6.20' );
229	}
230	if ( ! defined( 'WPMS_PLUGIN_FILE' ) ) {
231	define( 'WPMS_PLUGIN_FILE', __FILE__ );
232	}
233
234	/**
235	* Display admin notice and prevent plugin code execution, if the server is
236	* using old/insecure PHP version.
237	*
238	* @since 2.0.0
239	*/
240	if ( version_compare( phpversion(), WPMS_PHP_VER, '<' ) ) {
241	add_action( 'admin_notices', 'wp_mail_smtp_insecure_php_version_notice' );
242
243	return;
244	}
245
246	require_once dirname( __FILE__ ) . '/wp-mail-smtp.php';
247