SMTP Mailer Plugin For WordPress

SMTP Mailer is the easiest SMTP plugin for WordPress. It allows you to configure an SMTP server to send email from your website. SMTP Mailer enhances the default WordPress mail (“wp_mail”) function by letting you connect to a remote SMPT server to send an email instead of doing it from your web server. This reduces heavy load from your server and increases email deliverability.

SMTP Mailer Plugin Demo

SMTP Mailer Installation

You can install the SMTP plugin like any other WordPress plugin.

Option 1 (Quick & Easy install)

1. Go to Plugins->Add New from your WordPress admin dashboard
2. Search for SMTP Mailer
3. Click Install once you have found it

Option 2 (Manual install)

1. Download the zip version of the plugin
2. Go to Plugins->Add New
3. Click Upload Plugin
4. Select the zip file on your computer
5. Install it

Option 3 (FTP install)

1. Download the zip version of the plugin
2. Extract it on your computer
3. Connect to your site via FTP
4. Browse to “/wp-content/uploads/plugins/” directory
5. Upload the folder that contains the main plugin files

SMTP Mailer Settings

You will need to configure your SMTP server related information in order to send email from your website. In order to access the settings menu go to “Settings->SMTP Mailer” from your admin dashboard.

The settings menu comes with three separate tabs – General Settings, Test Email & Server Info.

General Settings

SMTP Host

Your outgoing mail server which will be used for sending email (e.g. smtp.gmail.com).

SMTP Authentication

Enable/Disable SMTP authentication when sending an email (Supported values: True/False).

SMTP Username

The username to connect to your SMTP server. You will need to provide a username if you enable “SMTP Authentication”.

SMTP Password

The password to connect to your SMTP server. You will need to provide a password if you enable “SMTP Authentication”.

Type of Encryption

The encryption which will be used for sending an email (Supported values: TLS/SSL/No Encryption. TLS is recommended).

SMTP Port

The port which will be used when sending an email (587/465/25). If you choose TLS the port should be set to 587. For SSL use port 465 instead.

From Email Address

The email address which is be used as the From Address if it is not supplied to the mail function.

From Name

The name which will be used as the From Name if it is not supplied to the mail function.

Test Email

“Test Email” menu allows you to test the functionality of the plugin after you have configured everything.

Server Info

“Server Info” menu displays some technical information regarding your server. This is very useful for troubleshooting.

Outgoing Mail Server Configurations

Here are the settings for all the popular outgoing mail (SMTP) servers.

Gmail SMTP

1. SMTP Host: smtp.gmail.com
2. SMTP Authentication: True
3. SMTP Username: Either your Gmail account username or full email address
4. SMTP Password: Your Gmail account’s password
5. Type of Encryption: TLS or SSL
6. SMTP Port: 587 (if TLS) or 465 (if SSL)

Troubleshooting

1.For security reasons, Gmail now blocks any incoming connection to its SMTP server. In order to make a connection to the Gmail SMTP server and send email, you will also need to allow less secure apps in your account.

If you do not wish to turn on this feature, you might want to take a look at my Gmail SMTP plugin.

2.When you are sending an email for the first time via SMTP, you might get this SMTP Error: “Could not authenticate“.

In order to fix this issue login to your Gmail account first. You should see a security warning from Gmail upon login – “Your account has been hacked” or “Somebody stole your password”. As soon as you confirm that it was you who tried to login (Just click on the link that shows up in that message), the plugin should be able to connect to the Gmail SMTP server.

Sendinblue SMTP

1. SMTP Host: smtp-relay.sendinblue.com
2. SMTP Authentication: True
3. SMTP Username: Your login email (can found be under SMTP & API > SMTP menu)
4. SMTP Password: Your smtp master password (can found be under SMTP & API > SMTP menu)
5. Type of Encryption: TLS
6. SMTP Port: 587

You can learn more about Sendinblue here.

Yahoo SMTP

1. SMTP Host: smtp.mail.yahoo.com
2. SMTP Authentication: True
3. SMTP Username: Your full Yahoo email address
4. SMTP Password: Your Yahoo email account’s password
5. Type of Encryption: TLS or SSL
6. SMTP Port: 587 (if TLS) or 465 (if SSL)

Outlook SMTP

1. SMTP Host: smtp-mail.outlook.com
2. SMTP Authentication: True
3. SMTP Username: Your email address
4. SMTP Password: Your password
5. Type of Encryption: TLS
6. SMTP Port: 25 or 587 (if port 25 is blocked)

SendGrid SMTP

1. SMTP Host: smtp.sendgrid.net
2. SMTP Authentication: True
3. SMTP Username: Your SendGrid username
4. SMTP Password: Your SendGrid password
5. Type of Encryption: TLS
6. SMTP Port: 587 (if TLS) or 465 (if SSL). If you select “No Encryption” use port 25 instead.

Mandrill SMTP

1. SMTP Host: smtp.mandrillapp.com
2. SMTP Authentication: True
3. SMTP Username: Your Mandrill username
4. SMTP Password: Your Mandrill password
5. Type of Encryption: TLS
6. SMTP Port: 587, 25 or 2525 (if TLS or No Encryption). For SSL use port 465.

GoDaddy SMTP

1. SMTP Host: relay-hosting.secureserver.net
2. SMTP Authentication: False
3. Type of Encryption: No Encryption
4. SMTP Port: 25

Office 365 SMTP

1. SMTP Host: smtp.office365.com
2. SMTP Authentication: True
3. SMTP Username: Your office365 username
4. SMTP Password: Your office365 password
5. Type of Encryption: TLS
6. SMTP Port: 587

Amazon SES SMTP

1. SMTP Host: email-smtp.us-west-2.amazonaws.com if you are in the US West (Oregon) region. You can find the SMTP endpoint for your region here.
2. SMTP Authentication: True
3. SMTP Username: Your Amazon SES SMTP username (See how to obtain your Amazon SES SMTP credentials here)
4. SMTP Password: Your Amazon SES SMTP password
5. Type of Encryption: TLS
6. SMTP Port: 587