<h2>File Contents: /home/planet5/www/wp-content/plugins/mymail-sendgrid-integration/mymail-sendgrid-integration.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/www/wp-content/plugins/mymail-sendgrid-integration/mymail-sendgrid-integration.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/*
Plugin Name: MyMail SendGrid Integration
Plugin URI: https://evp.to/mymail?utm_campaign=wporg&amp;utm_source=MyMail+SendGrid+Integration
Description: Uses SendGrid to deliver emails for the MyMail Newsletter Plugin for WordPress. This requires at least version 2.0.25 of the plugin
Version: 0.5.1
Author: EverPress
Author URI: https://everpress.co

License: GPLv2 or later
*/


define( &#039;MYMAIL_SENDGRID_VERSION&#039;, &#039;0.5.1&#039; );
define( &#039;MYMAIL_SENDGRID_REQUIRED_VERSION&#039;, &#039;2.0.25&#039; );
define( &#039;MYMAIL_SENDGRID_ID&#039;, &#039;sendgrid&#039; );


class MyMailSendGird {

	private $plugin_path;
	private $plugin_url;

	/**
	 *
	 */
	public function __construct() {

		$this-&gt;plugin_path = plugin_dir_path( __FILE__ );
		$this-&gt;plugin_url  = plugin_dir_url( __FILE__ );

		register_activation_hook( __FILE__, array( &amp;$this, &#039;activate&#039; ) );
		register_deactivation_hook( __FILE__, array( &amp;$this, &#039;deactivate&#039; ) );

		load_plugin_textdomain( &#039;mymail-sendgrid&#039;, false, dirname( plugin_basename( __FILE__ ) ) . &#039;/lang&#039; );

		add_action( &#039;init&#039;, array( &amp;$this, &#039;init&#039; ), 1 );
	}


	/*
	 * init the plugin
	 *
	 * @access public
	 * @return void
	 */
	public function init() {

		if ( ! function_exists( &#039;mymail&#039; ) ) {

			add_action( &#039;admin_notices&#039;, array( &amp;$this, &#039;notice&#039; ) );

		} else {

			add_filter( &#039;mymail_delivery_methods&#039;, array( &amp;$this, &#039;delivery_method&#039; ) );
			add_action( &#039;mymail_deliverymethod_tab_sendgrid&#039;, array( &amp;$this, &#039;deliverytab&#039; ) );

			add_filter( &#039;mymail_verify_options&#039;, array( &amp;$this, &#039;verify_options&#039; ) );

			if ( mymail_option( &#039;deliverymethod&#039; ) == MYMAIL_SENDGRID_ID ) {
				add_action( &#039;mymail_initsend&#039;, array( &amp;$this, &#039;initsend&#039; ) );
				add_action( &#039;mymail_presend&#039;, array( &amp;$this, &#039;presend&#039; ) );
				add_action( &#039;mymail_dosend&#039;, array( &amp;$this, &#039;dosend&#039; ) );
				add_action( &#039;mymail_sendgrid_cron&#039;, array( &amp;$this, &#039;reset&#039; ) );
				add_action( &#039;mymail_cron_worker&#039;, array( &amp;$this, &#039;check_bounces&#039; ), -1 );
				add_action( &#039;mymail_check_bounces&#039;, array( &amp;$this, &#039;check_bounces&#039; ) );
				add_action( &#039;mymail_section_tab_bounce&#039;, array( &amp;$this, &#039;section_tab_bounce&#039; ) );
			}
		}

		if ( function_exists( &#039;mailster&#039; ) ) {

			add_action(
				&#039;admin_notices&#039;,
				function() {

					$name = &#039;MyMail SendGrid Integration&#039;;
					$slug = &#039;mailster-sendgrid/mailster-sendgrid.php&#039;;

					$install_url = wp_nonce_url( self_admin_url( &#039;update.php?action=install-plugin&amp;plugin=&#039; . dirname( $slug ) ), &#039;install-plugin_&#039; . dirname( $slug ) );

					$search_url = add_query_arg(
						array(
							&#039;s&#039;    =&gt; $slug,
							&#039;tab&#039;  =&gt; &#039;search&#039;,
							&#039;type&#039; =&gt; &#039;term&#039;,
						),
						admin_url( &#039;plugin-install.php&#039; )
					);

					?&gt;
			&lt;div class=&quot;error&quot;&gt;
				&lt;p&gt;
				&lt;strong&gt;&lt;?php echo esc_html( $name ); ?&gt;&lt;/strong&gt; is deprecated in Mailster and no longer maintained! Please switch to the &lt;a href=&quot;&lt;?php echo esc_url( $search_url ); ?&gt;&quot;&gt;new version&lt;/a&gt; as soon as possible or &lt;a href=&quot;&lt;?php echo esc_url( $install_url ); ?&gt;&quot;&gt;install it now!&lt;/a&gt;
				&lt;/p&gt;
			&lt;/div&gt;
					&lt;?php

				}
			);
		}

	}


	/**
	 * initsend function.
	 *
	 * uses mymail_initsend hook to set initial settings
	 *
	 * @access public
	 * @return void
	 * @param mixed $mailobject
	 */
	public function initsend( $mailobject ) {

		$method = mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; );

		if ( $method == &#039;smtp&#039; ) {

			$secure = mymail_option( MYMAIL_SENDGRID_ID . &#039;_secure&#039; );

			$mailobject-&gt;mailer-&gt;Mailer        = &#039;smtp&#039;;
			$mailobject-&gt;mailer-&gt;SMTPSecure    = $secure ? &#039;ssl&#039; : &#039;none&#039;;
			$mailobject-&gt;mailer-&gt;Host          = &#039;smtp.sendgrid.net&#039;;
			$mailobject-&gt;mailer-&gt;Port          = $secure ? 465 : 587;
			$mailobject-&gt;mailer-&gt;SMTPAuth      = true;
			$mailobject-&gt;mailer-&gt;Username      = mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; );
			$mailobject-&gt;mailer-&gt;Password      = mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; );
			$mailobject-&gt;mailer-&gt;SMTPKeepAlive = true;

		} elseif ( $method == &#039;web&#039; ) {

		}

		// sendgrid will handle DKIM integration
		$mailobject-&gt;dkim = false;

	}


	/**
	 * presend function.
	 *
	 * uses the mymail_presend hook to apply settings before each mail
	 *
	 * @access public
	 * @return void
	 * @param mixed $mailobject
	 */
	public function presend( $mailobject ) {

		$method = mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; );

		$xsmtpapi[&#039;unique_args&#039;] = array(
			&#039;subject&#039;      =&gt; $mailobject-&gt;subject,
			&#039;subscriberID&#039; =&gt; $mailobject-&gt;subscriberID,
			&#039;campaignID&#039;   =&gt; $mailobject-&gt;campaignID,
		);
		$categories              = mymail_option( MYMAIL_SENDGRID_ID . &#039;_categories&#039; );
		if ( ! empty( $categories ) ) {
			$xsmtpapi[&#039;category&#039;] = array_slice( array_map( &#039;trim&#039;, explode( &#039;,&#039;, $categories ) ), 0, 10 );
		}

		if ( $method == &#039;smtp&#039; ) {

			if ( ! empty( $xsmtpapi ) ) {
				$mailobject-&gt;add_header( &#039;X-SMTPAPI&#039;, json_encode( $xsmtpapi ) );
			}

			// use pre_send from the main class
			$mailobject-&gt;pre_send();

		} elseif ( $method == &#039;web&#039; ) {

			// embedding images doesn&#039;t work
			$mailobject-&gt;embed_images = false;

			$mailobject-&gt;pre_send();

			$mailobject-&gt;sendgrid_object = array(
				&#039;from&#039;      =&gt; $mailobject-&gt;from,
				&#039;fromname&#039;  =&gt; $mailobject-&gt;from_name,
				&#039;replyto&#039;   =&gt; $mailobject-&gt;reply_to,
				// doesn&#039;t work right now
				// &#039;returnpath&#039; =&gt; $mailobject-&gt;bouncemail,
				&#039;to&#039;        =&gt; $mailobject-&gt;to,
				&#039;subject&#039;   =&gt; $mailobject-&gt;subject,
				&#039;text&#039;      =&gt; $mailobject-&gt;mailer-&gt;AltBody,
				&#039;html&#039;      =&gt; $mailobject-&gt;mailer-&gt;Body,
				&#039;api_user&#039;  =&gt; mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; ),
				&#039;api_key&#039;   =&gt; mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; ),
				&#039;files&#039;     =&gt; array(),
				&#039;content&#039;   =&gt; array(),
				&#039;x-smtpapi&#039; =&gt; json_encode( $xsmtpapi ),
			);

			if ( ! empty( $mailobject-&gt;headers ) ) {
				$mailobject-&gt;sendgrid_object[&#039;headers&#039;] = json_encode( $mailobject-&gt;headers );
			}

			// currently not working on some clients
			if ( false ) {

				$images = $this-&gt;embedd_images( $mailobject-&gt;make_img_relative( $mailobject-&gt;content ) );

				$mailobject-&gt;sendgrid_object[&#039;files&#039;]   = wp_parse_args( $images[&#039;files&#039;], $mailobject-&gt;sendgrid_object[&#039;files&#039;] );
				$mailobject-&gt;sendgrid_object[&#039;content&#039;] = wp_parse_args( $images[&#039;content&#039;], $mailobject-&gt;sendgrid_object[&#039;content&#039;] );

			}

			if ( ! empty( $mailobject-&gt;attachments ) ) {

				$attachments = $this-&gt;attachments( $mailobject-&gt;attachments );

				$mailobject-&gt;sendgrid_object[&#039;files&#039;]   = wp_parse_args( $attachments[&#039;files&#039;], $mailobject-&gt;sendgrid_object[&#039;files&#039;] );
				$mailobject-&gt;sendgrid_object[&#039;content&#039;] = wp_parse_args( $attachments[&#039;content&#039;], $mailobject-&gt;sendgrid_object[&#039;content&#039;] );

			}
		}

	}


	/**
	 * dosend function.
	 *
	 * uses the ymail_dosend hook and triggers the send
	 *
	 * @access public
	 * @param mixed $mailobject
	 * @return void
	 */
	public function dosend( $mailobject ) {

		$method = mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; );

		if ( $method == &#039;smtp&#039; ) {

			// use send from the main class
			$mailobject-&gt;do_send();

		} elseif ( $method == &#039;web&#039; ) {

			if ( ! isset( $mailobject-&gt;sendgrid_object ) ) {
				$mailobject-&gt;set_error( __( &#039;SendGrid options not defined&#039;, &#039;mymail-sendgrid&#039; ) );
				return false;
			}

			$response = $this-&gt;do_call( &#039;mail.send&#039;, $mailobject-&gt;sendgrid_object, true );

			// set errors if exists
			if ( isset( $response-&gt;errors ) ) {
				$mailobject-&gt;set_error( $response-&gt;errors );
			}

			if ( isset( $response-&gt;message ) &amp;&amp; $response-&gt;message == &#039;success&#039; ) {
				$mailobject-&gt;sent = true;
			} else {
				$mailobject-&gt;sent = false;
			}
		}
	}


	/**
	 * reset function.
	 *
	 * resets the current time
	 *
	 * @access public
	 * @param mixed $message
	 * @return array
	 */
	public function reset() {
		update_option( &#039;_transient__mymail_send_period_timeout&#039;, false );
		update_option( &#039;_transient__mymail_send_period&#039;, 0 );

	}


	/**
	 * attachments function.
	 *
	 * prepares the array for attachemnts
	 *
	 * @access public
	 * @param unknown $attachments
	 * @return array
	 */
	public function attachments( $attachments ) {

		$return = array(
			&#039;files&#039;   =&gt; array(),
			&#039;content&#039; =&gt; array(),
		);

		foreach ( $attachments as $attachment ) {
			if ( ! file_exists( $attachment ) ) {
				continue;
			}
			$filename = basename( $attachment );

			$return[&#039;files&#039;][ $filename ]   = file_get_contents( $attachment );
			$return[&#039;content&#039;][ $filename ] = $filename;

		}

		return $return;
	}


	/**
	 * embedd_images function.
	 *
	 * prepares the array for embedded images
	 *
	 * @access public
	 * @param mixed $message
	 * @return array
	 */
	public function embedd_images( $message ) {

		$return = array(
			&#039;files&#039;   =&gt; array(),
			&#039;content&#039; =&gt; array(),
			&#039;html&#039;    =&gt; $message,
		);

		$upload_folder = wp_upload_dir();
		$folder        = $upload_folder[&#039;basedir&#039;];

		preg_match_all( &quot;/(src|background)=[\&quot;&#039;]([^\&quot;&#039;]+)[\&quot;&#039;]/Ui&quot;, $message, $images );

		if ( isset( $images[2] ) ) {

			foreach ( $images[2] as $i =&gt; $url ) {
				if ( empty( $url ) ) {
					continue;
				}
				if ( substr( $url, 0, 7 ) == &#039;http://&#039; ) {
					continue;
				}
				if ( substr( $url, 0, 8 ) == &#039;https://&#039; ) {
					continue;
				}
				if ( ! file_exists( $folder . &#039;/&#039; . $url ) ) {
					continue;
				}
				$filename  = basename( $url );
				$directory = dirname( $url );
				if ( $directory == &#039;.&#039; ) {
					$directory = &#039;&#039;;
				}
				$cid                            = md5( $folder . &#039;/&#039; . $url . time() );
				$return[&#039;html&#039;]                 = str_replace( $url, &#039;cid:&#039; . $cid, $return[&#039;html&#039;] );
				$return[&#039;files&#039;][ $filename ]   = file_get_contents( $folder . &#039;/&#039; . $url );
				$return[&#039;content&#039;][ $filename ] = $cid;
			}
		}
		return $return;
	}


	/**
	 * delivery_method function.
	 *
	 * add the delivery method to the options
	 *
	 * @access public
	 * @param mixed $delivery_methods
	 * @return void
	 */
	public function delivery_method( $delivery_methods ) {
		$delivery_methods[ MYMAIL_SENDGRID_ID ] = &#039;SendGrid&#039;;
		return $delivery_methods;
	}


	/**
	 * deliverytab function.
	 *
	 * the content of the tab for the options
	 *
	 * @access public
	 * @return void
	 */
	public function deliverytab() {

		$verified = mymail_option( MYMAIL_SENDGRID_ID . &#039;_verified&#039; );

		?&gt;
		&lt;table class=&quot;form-table&quot;&gt;
			&lt;?php if ( ! $verified ) { ?&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&amp;nbsp;&lt;/th&gt;
				&lt;td&gt;&lt;p class=&quot;description&quot;&gt;&lt;?php echo sprintf( __( &#039;You need a %s account to use this service!&#039;, &#039;mymail-sendgrid&#039; ), &#039;&lt;a href=&quot;http://mbsy.co/sendgrid/63320&quot; class=&quot;external&quot;&gt;SendGrid&lt;/a&gt;&#039; ); ?&gt;&lt;/p&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;?php } ?&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;SendGrid Username&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_user]&quot; value=&quot;&lt;?php echo esc_attr( mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; ) ); ?&gt;&quot; class=&quot;regular-text&quot;&gt;&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;SendGrid Password&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;&lt;input type=&quot;password&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_pwd]&quot; value=&quot;&lt;?php echo esc_attr( mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; ) ); ?&gt;&quot; class=&quot;regular-text&quot; autocomplete=&quot;new-password&quot;&gt;&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&amp;nbsp;&lt;/th&gt;
				&lt;td&gt;
					&lt;?php if ( $verified ) : ?&gt;
					&lt;span style=&quot;color:#3AB61B&quot;&gt;&amp;#10004;&lt;/span&gt; &lt;?php esc_html_e( &#039;Your credentials are ok!&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;
					&lt;?php else : ?&gt;
					&lt;span style=&quot;color:#D54E21&quot;&gt;&amp;#10006;&lt;/span&gt; &lt;?php esc_html_e( &#039;Your credentials are WRONG!&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;
					&lt;?php endif; ?&gt;

					&lt;input type=&quot;hidden&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_verified]&quot; value=&quot;&lt;?php echo $verified; ?&gt;&quot;&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;Send Emails with&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;
				&lt;select name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_api]&quot;&gt;
					&lt;option value=&quot;web&quot; &lt;?php selected( mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; ), &#039;web&#039; ); ?&gt;&gt;WEB API&lt;/option&gt;
					&lt;option value=&quot;smtp&quot; &lt;?php selected( mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; ), &#039;smtp&#039; ); ?&gt;&gt;SMTP API&lt;/option&gt;
				&lt;/select&gt;
				&lt;?php if ( mymail_option( MYMAIL_SENDGRID_ID . &#039;_api&#039; ) == &#039;web&#039; ) : ?&gt;
				&lt;span class=&quot;description&quot;&gt;&lt;?php _e( &#039;embedded images are not working with the web API!&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/span&gt;
				&lt;?php endif; ?&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;Categories&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;&lt;input type=&quot;text&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_categories]&quot; value=&quot;&lt;?php echo esc_attr( mymail_option( MYMAIL_SENDGRID_ID . &#039;_categories&#039; ) ); ?&gt;&quot; class=&quot;large-text&quot;&gt;
				&lt;p class=&quot;howto&quot;&gt;&lt;?php echo sprintf( __( &#039;Define up to 10 %s, separated with commas which get send via SendGrid X-SMTPAPI&#039;, &#039;mymail-sendgrid&#039; ), &#039;&lt;a href=&quot;https://sendgrid.com/docs/API_Reference/SMTP_API/categories.html&quot; class=&quot;external&quot;&gt;&#039; . __( &#039;Categories&#039;, &#039;mymail-sendgrid&#039; ) . &#039;&lt;/a&gt;&#039; ); ?&gt;&lt;/p&gt;
			&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;Secure Connection&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;&lt;label&gt;&lt;input type=&quot;hidden&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_secure]&quot; value=&quot;&quot;&gt;&lt;input type=&quot;checkbox&quot; name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_secure]&quot; value=&quot;1&quot; &lt;?php checked( mymail_option( MYMAIL_SENDGRID_ID . &#039;_secure&#039; ), true ); ?&gt;&gt; &lt;?php _e( &#039;use secure connection&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/label&gt;&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;Bounce Handling via&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;
				&lt;select name=&quot;mymail_options[&lt;?php echo MYMAIL_SENDGRID_ID; ?&gt;_bouncehandling]&quot;&gt;
					&lt;option value=&quot;sendgrid&quot; &lt;?php selected( mymail_option( MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ), &#039;sendgrid&#039; ); ?&gt;&gt;SendGrid&lt;/option&gt;
					&lt;option value=&quot;mymail&quot; &lt;?php selected( mymail_option( MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ), &#039;mymail&#039; ); ?&gt;&gt;MyMail&lt;/option&gt;
				&lt;/select&gt; &lt;span class=&quot;description&quot;&gt;&lt;?php _e( &#039;MyMail cannot handle bounces when the WEB API is used&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/span&gt;
				&lt;/td&gt;
			&lt;/tr&gt;
			&lt;tr valign=&quot;top&quot;&gt;
				&lt;th scope=&quot;row&quot;&gt;&lt;?php _e( &#039;DKIM&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/th&gt;
				&lt;td&gt;&lt;p class=&quot;howto&quot;&gt;&lt;?php _e( &#039;Set the domain to &quot;sendgrid.me&quot; on the &quot;Apps&quot; page at SendGrid.com (default)&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/p&gt;&lt;/td&gt;
			&lt;/tr&gt;
		&lt;/table&gt;

		&lt;?php

	}


	/**
	 * verify_options function.
	 *
	 * some verification if options are saved
	 *
	 * @access public
	 * @param unknown $user (optional)
	 * @param unknown $pwd  (optional)
	 * @return void
	 */
	public function verify( $user = &#039;&#039;, $pwd = &#039;&#039; ) {

		$url = ( mymail_option( MYMAIL_SENDGRID_ID . &#039;_secure&#039; ) ? &#039;https&#039; : &#039;http&#039; ) . &#039;://api.sendgrid.com/api/profile.get.json&#039;;

		if ( ! $user ) {
			$user = mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; );
		}
		if ( ! $pwd ) {
			$pwd = mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; );
		}

		$data = array(
			&#039;api_user&#039; =&gt; $user,
			&#039;api_key&#039;  =&gt; $pwd,
		);

		$response = wp_remote_get(
			add_query_arg( $data, $url ),
			array(
				&#039;timeout&#039; =&gt; 5,
			)
		);

		$response = wp_remote_retrieve_body( $response );
		$response = json_decode( $response );

		if ( isset( $response-&gt;error ) ) {
			return false;
		} elseif ( isset( $response[0]-&gt;username ) ) {
			return true;
		}

		return false;
	}


	/**
	 * verify_options function.
	 *
	 * some verification if options are saved
	 *
	 * @access public
	 * @param mixed $options
	 * @return void
	 */
	public function verify_options( $options ) {

		if ( $timestamp = wp_next_scheduled( &#039;mymail_sendgrid_cron&#039; ) ) {
			wp_unschedule_event( $timestamp, &#039;mymail_sendgrid_cron&#039; );
		}

		if ( $options[&#039;deliverymethod&#039;] == MYMAIL_SENDGRID_ID ) {

			$old_user = mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; );
			$old_pwd  = mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; );

			if ( $old_user != $options[ MYMAIL_SENDGRID_ID . &#039;_user&#039; ]
				|| $old_pwd != $options[ MYMAIL_SENDGRID_ID . &#039;_pwd&#039; ]
				|| ! mymail_option( MYMAIL_SENDGRID_ID . &#039;_verified&#039; ) ) {

				$options[ MYMAIL_SENDGRID_ID . &#039;_verified&#039; ] = $this-&gt;verify( $options[ MYMAIL_SENDGRID_ID . &#039;_user&#039; ], $options[ MYMAIL_SENDGRID_ID . &#039;_pwd&#039; ] );

				if ( $options[ MYMAIL_SENDGRID_ID . &#039;_verified&#039; ] ) {
					add_settings_error( &#039;mymail_options&#039;, &#039;mymail_options&#039;, sprintf( __( &#039;Please update your sending limits! %s&#039;, &#039;mymail-sendgrid&#039; ), &#039;&lt;a href=&quot;http://sendgrid.com/account/overview&quot; class=&quot;external&quot;&gt;SendGrid Dashboard&lt;/a&gt;&#039; ) );

				}
			}

			if ( ! wp_next_scheduled( &#039;mymail_sendgrid_cron&#039; ) ) {
				// reset on 00:00 PST ( GMT -8 ) == GMT +16
				$timeoffset = strtotime( &#039;midnight&#039; ) + ( ( 24 - 8 ) * HOUR_IN_SECONDS );
				if ( $timeoffset &lt; time() ) {
					$timeoffset + ( 24 * HOUR_IN_SECONDS );
				}
				wp_schedule_event( $timeoffset, &#039;daily&#039;, &#039;mymail_sendgrid_cron&#039; );
			}

			if ( $options[ MYMAIL_SENDGRID_ID . &#039;_api&#039; ] == &#039;smtp&#039; ) {
				if ( function_exists( &#039;fsockopen&#039; ) ) {
					$host = &#039;smtp.sendgrid.net&#039;;
					$port = $options[ MYMAIL_SENDGRID_ID . &#039;_secure&#039; ] ? 465 : 587;
					$conn = fsockopen( $host, $port, $errno, $errstr, 15 );

					if ( is_resource( $conn ) ) {

						fclose( $conn );

					} else {

						add_settings_error( &#039;mymail_options&#039;, &#039;mymail_options&#039;, sprintf( __( &#039;Not able to use SendGrid with SMTP API cause of the blocked port %s! Please send with the WEB API or choose a different delivery method!&#039;, &#039;mymail-sendgrid&#039; ), $port ) );

					}
				}
			} else {

				if ( $options[ MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ] == &#039;mymail&#039; ) {
					add_settings_error( &#039;mymail_options&#039;, &#039;mymail_options&#039;, __( &#039;It is currently not possible to handle bounces with MyMail when using the WEB API&#039;, &#039;mymail-sendgrid&#039; ) );
					$options[ MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ] = &#039;sendgird&#039;;
				}
			}

			if ( $options[ MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ] == &#039;mymail&#039; ) {
				add_settings_error( &#039;mymail_options&#039;, &#039;mymail_options&#039;, sprintf( __( &#039;Please make sure your SendGrid Account &quot;preserve headers&quot; otherwise MyMail is not able to handle bounces&#039;, &#039;mymail-sendgrid&#039; ), $port ) );
			}
		}

		return $options;
	}


	/**
	 * check_bounces function.
	 *
	 * checks for bounces and reset them if needed
	 *
	 * @access public
	 * @return void
	 */
	public function check_bounces() {

		if ( get_transient( &#039;mymail_check_bounces_lock&#039; ) || mymail_option( MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ) == &#039;mymail&#039; ) {
			return false;
		}

		// check bounces only every five minutes
		set_transient( &#039;mymail_check_bounces_lock&#039;, true, mymail_option( &#039;bounce_check&#039;, 5 ) * 60 );

		$collection = array();

		$response = $this-&gt;do_call(
			&#039;bounces.get&#039;,
			array(
				&#039;date&#039;  =&gt; 1,
				&#039;limit&#039; =&gt; 200,
			)
		);

		if ( is_wp_error( $response ) ) {
			return false;
		}

		$collection[&#039;bounces&#039;] = (array) $response-&gt;body;

		$response = $this-&gt;do_call(
			&#039;blocks.get&#039;,
			array(
				&#039;date&#039;  =&gt; 1,
				&#039;limit&#039; =&gt; 200,
			)
		);

		if ( is_wp_error( $response ) ) {
			return false;
		}

		$collection[&#039;blocks&#039;] = (array) $response-&gt;body;

		$response = $this-&gt;do_call(
			&#039;spamreports.get&#039;,
			array(
				&#039;date&#039;  =&gt; 1,
				&#039;limit&#039; =&gt; 200,
			)
		);

		if ( is_wp_error( $response ) ) {
			return false;
		}

		$collection[&#039;spamreports&#039;] = (array) $response-&gt;body;

		$response = $this-&gt;do_call(
			&#039;unsubscribes.get&#039;,
			array(
				&#039;date&#039;  =&gt; 1,
				&#039;limit&#039; =&gt; 200,
			)
		);

		if ( is_wp_error( $response ) ) {
			return false;
		}

		$collection[&#039;unsubscribes&#039;] = (array) $response-&gt;body;

		foreach ( $collection as $type =&gt; $messages ) {

			foreach ( $messages as $message ) {

				$subscriber = mymail( &#039;subscribers&#039; )-&gt;get_by_mail( $message-&gt;email );

				// only if user exists
				if ( $subscriber ) {

					$reseted   = false;
					$campaigns = mymail( &#039;subscribers&#039; )-&gt;get_sent_campaigns( $subscriber-&gt;ID );

					if ( $type == &#039;unsubscribes&#039; ) {

						if ( mymail( &#039;subscribers&#039; )-&gt;unsubscribe( $subscriber-&gt;ID, isset( $campaigns[0] ) ? $campaigns[0]-&gt;campaign_id : null ) ) {
							$response = $this-&gt;do_call( $type . &#039;.delete&#039;, array( &#039;email&#039; =&gt; $message-&gt;email ), true );
							$reseted  = isset( $response-&gt;message ) &amp;&amp; $response-&gt;message == &#039;success&#039;;
						}
					} else {

						// any code with 5 eg 5.x.x or a spamreport
						$is_hard_bounce = $type == &#039;spamreports&#039; || substr( $message-&gt;status, 0, 1 ) == 5;

						foreach ( $campaigns as $i =&gt; $campaign ) {

							// only the last 10 campaigns
							if ( $i &gt;= 10 ) {
								break;
							}

							if ( mymail( &#039;subscribers&#039; )-&gt;bounce( $subscriber-&gt;ID, $campaign-&gt;campaign_id, $is_hard_bounce ) ) {
								$response = $this-&gt;do_call( $type . &#039;.delete&#039;, array( &#039;email&#039; =&gt; $message-&gt;email ), true );
								$reseted  = isset( $response-&gt;message ) &amp;&amp; $response-&gt;message == &#039;success&#039;;
							}
						}
					}

					if ( ! $reseted ) {
						$response = $this-&gt;do_call( $type . &#039;.delete&#039;, array( &#039;email&#039; =&gt; $message-&gt;email ), true );
						$reseted  = isset( $response-&gt;message ) &amp;&amp; $response-&gt;message == &#039;success&#039;;
					}
				} else {
					// remove user from the list
					$response = $this-&gt;do_call( $type . &#039;.delete&#039;, array( &#039;email&#039; =&gt; $message-&gt;email ), true );
					$count++;
				}
			}
		}

	}


	/**
	 * do_call function.
	 *
	 * makes a request to the sendgrid endpoint and returns the result
	 *
	 * @access public
	 * @param mixed $path
	 * @param array $data     (optional) (default: array())
	 * @param bool  $bodyonly (optional) (default: false)
	 * @param int   $timeout  (optional) (default: 5)
	 * @return void
	 */
	public function do_call( $path, $data = array(), $bodyonly = false, $timeout = 5 ) {

		$url = ( ! mymail_option( MYMAIL_SENDGRID_ID . &#039;_secure&#039; ) ? &#039;http&#039; : &#039;https&#039; ) . &#039;://api.sendgrid.com/api/&#039; . $path . &#039;.json&#039;;
		if ( is_bool( $data ) ) {
			$bodyonly = $data;
			$data     = array();
		}

		$user = mymail_option( MYMAIL_SENDGRID_ID . &#039;_user&#039; );
		$pwd  = mymail_option( MYMAIL_SENDGRID_ID . &#039;_pwd&#039; );

		if ( $path == &#039;mail.send&#039; ) {

			$url = add_query_arg(
				array(
					&#039;api_user&#039; =&gt; $user,
					&#039;api_key&#039;  =&gt; $pwd,
				),
				$url
			);

			$response = wp_remote_post(
				$url,
				array(
					&#039;timeout&#039; =&gt; $timeout,
					&#039;body&#039;    =&gt; $data,
				)
			);

		} else {

			$data = wp_parse_args(
				$data,
				array(
					&#039;api_user&#039; =&gt; $user,
					&#039;api_key&#039;  =&gt; $pwd,
				)
			);

			$response = wp_remote_get(
				add_query_arg( $data, $url ),
				array(
					&#039;timeout&#039; =&gt; $timeout,
				)
			);

		}

		if ( is_wp_error( $response ) ) {

			return $response;

		}

		$code = wp_remote_retrieve_response_code( $response );
		$body = json_decode( wp_remote_retrieve_body( $response ) );

		if ( $code != 200 ) {
			return new WP_Error( $code, $body-&gt;message );
		}

		if ( $bodyonly ) {
			return $body;
		}

		return (object) array(
			&#039;code&#039;    =&gt; $code,
			&#039;headers&#039; =&gt; wp_remote_retrieve_headers( $response ),
			&#039;body&#039;    =&gt; $body,
		);

	}


	/**
	 * section_tab_bounce function.
	 *
	 * displays a note on the bounce tab (MyMail &gt;= 1.6.2)
	 *
	 * @access public
	 * @param mixed $options
	 * @return void
	 */
	public function section_tab_bounce() {

		if ( mymail_option( MYMAIL_SENDGRID_ID . &#039;_bouncehandling&#039; ) == &#039;mymail&#039; ) {
			return;
		}

		?&gt;
		&lt;div class=&quot;error inline&quot;&gt;&lt;p&gt;&lt;strong&gt;&lt;?php _e( &#039;Bouncing is handled by SendGrid so all your settings will be ignored&#039;, &#039;mymail-sendgrid&#039; ); ?&gt;&lt;/strong&gt;&lt;/p&gt;&lt;/div&gt;

		&lt;?php
	}


	/**
	 * Notice if MyMail is not available
	 *
	 * @access public
	 * @return void
	 */
	public function notice() {
		?&gt;
	&lt;div id=&quot;message&quot; class=&quot;error&quot;&gt;
	  &lt;p&gt;
	   &lt;strong&gt;SendGrid integration for MyMail&lt;/strong&gt; requires the &lt;a href=&quot;https://evp.to/mymail?utm_campaign=wporg&amp;utm_source=SendGrid+integration+for+MyMail&quot;&gt;MyMail Newsletter Plugin&lt;/a&gt;, at least version &lt;strong&gt;&lt;?php echo MYMAIL_SENDGRID_REQUIRED_VERSION; ?&gt;&lt;/strong&gt;.
	  &lt;/p&gt;
	&lt;/div&gt;
		&lt;?php
	}


	/**
	 * activate function
	 *
	 * @access public
	 * @return void
	 */
	public function activate() {

		if ( function_exists( &#039;mymail&#039; ) ) {

			mymail_notice( sprintf( __( &#039;Change the delivery method on the %s!&#039;, &#039;mymail-sendgrid&#039; ), &#039;&lt;a href=&quot;options-general.php?page=newsletter-settings&amp;mymail_remove_notice=delivery_method#delivery&quot;&gt;Settings Page&lt;/a&gt;&#039; ), &#039;&#039;, false, &#039;delivery_method&#039; );

			$this-&gt;reset();
		}
	}


	/**
	 * deactivate function
	 *
	 * @access public
	 * @return void
	 */
	public function deactivate() {
		if ( function_exists( &#039;mymail&#039; ) ) {
			if ( mymail_option( &#039;deliverymethod&#039; ) == MYMAIL_SENDGRID_ID ) {
				mymail_update_option( &#039;deliverymethod&#039;, &#039;simple&#039; );
				mymail_notice( sprintf( __( &#039;Change the delivery method on the %s!&#039;, &#039;mymail-sendgrid&#039; ), &#039;&lt;a href=&quot;options-general.php?page=newsletter-settings&amp;mymail_remove_notice=delivery_method#delivery&quot;&gt;Settings Page&lt;/a&gt;&#039; ), &#039;&#039;, false, &#039;delivery_method&#039; );
			}
		}
	}


}


new MyMailSendGird();
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