Description
SMTP Mailer plugin allows you to configure a mail server which handles all outgoing email from your website. It takes control of the wp_mail function and use SMTP instead.
Requirements
- A self-hosted website running on WordPress hosting
SMTP Mailer Settings
- SMTP Host: Your outgoing mail server (e.g. smtp.gmail.com).
- SMTP Authentication: Whether to use SMTP authentication when sending an email (True/False). If you choose to authenticate you will also need to provide your username and password.
- SMTP Username: The username to connect to your SMTP server.
- SMTP Password: The password to connect to your SMTP server.
- Type of Encryption: The encryption to be used when sending an email (TLS/SSL/No Encryption. TLS is recommended).
- SMTP Port: The port to 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 to be used as the From Address when sending an email.
- From Name: The name to be used as the From Name when sending an email.
SMTP Mailer Test Email
Once you have configured the settings you can send a test email to check the functionality of the plugin.
- To: Email address of the recipient.
- Subject: Subject of the email.
- Message: Email body.
Known Compatibility
SMTP Mailer should work with any plugin that uses the WordPress Mail function. However, It has been tested with the following form and contact form plugins:
- Contact Form 7
- Jetpack Contact Form
- Visual Form Builder
- Fast Secure Contact Form
- Formidable Forms
- Contact Form by BestWebSoft
For detailed setup instructions please visit the SMTP Mailer plugin page.
Screenshots
SMTP Mailer Settings 
SMTP Mailer Test Email Tab
Installation
- Go to the Add New plugins screen in your WordPress Dashboard
- Click the upload tab
- Browse for the plugin file (smtp-mailer.zip) on your computer
- Click “Install Now” and then hit the activate button
FAQ
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Can I send email via SMTP from my website using this plugin?
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Yes.
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Can I use this plugin with Gmail SMTP?
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Yes.
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Can I use this plugin on any SMTP port?
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Yes.
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Can I use this plugin with Sendinblue SMTP?
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Yes.
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Can I use this plugin with Mailgun SMTP?
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Yes.
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Can I use this plugin with SendGrid SMTP?
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Yes.
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Can I use this plugin with Postmark SMTP?
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Yes.
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Can I use this plugin with Office365 SMTP?
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Yes.
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Can I use this plugin with ZohoMail SMTP?
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Yes.
Reviews
May 20, 2021
SMTP Mailer is a simple, but reliable plugin for sending emails via SMTP. It doesn't feature any special APIs, which keeps it small and quick, but it works, and the author keeps up to date with issues and environmental changes.
I use it for Amazon SES on several sites and it works great.
May 11, 2021
I started with a plugin with a lot of downloads. I gave up after half an hour of unsuccessful attempts. Here, at first, everything worked easily. Thanks.
December 11, 2020
You're a genius! This is the best plugin that does the job. Easy setup, nothing extra.
The entire plugin in 4 files - it's brilliant! Compared to "WP Mail SMTP" - 860 files!!! Which I deleted after I started getting errors on my website from a plugin that I didn't install (!) - "Action Scheduler" which is a part of the "WP Mail SMTP" plugin. They installed a crown record, 4 tables in the database, and my entire log was filled with fatal errors, some class checks for WooCommerce (which I don't even have installed). I write all this in order to show by a comparative example that "SMTP Mailer" is a brilliant plugin. "SMTP Mailer" does the job, doesn't spoil my mood and doesn't waste my time.
August 9, 2020
If you are looking for a plugin to send mail over SMTP, then this is it. Straight forward minimalist design that gets the job done. I particularly like the display of the complete SMTP session when sending a test mail. Great job!
May 10, 2020
Thank very much!!!
April 30, 2020
So i have tried configuring it two ways - with gmail and smtp from my own hosting, it doesn't work in both cases.
With gmail it hangs on password authentication according to log - the password IS correct, less secure apps is checked and critical login is confirmed.
With my own smtp credentials - it supposedly sending test message, but it simply doesn't comply with CF7, there's an error while sending form and that's it.
It is lightweight, which i really like but what of it if plugin doesn't work even on native settings?
To dev:
- if you fix it, then i will change my review. Latest WP, only your plugin and CF7, PHP 7.3 and default WordPress theme.
Contributors & Developers
“SMTP Mailer” is open source software. The following people have contributed to this plugin.
Contributors
“SMTP Mailer” has been translated into 10 locales. Thank you to the translators for their contributions.
Translate “SMTP Mailer” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.1.2
- Fixed an issue that could cause an Undefined variable error if $attachments was not set.
1.1.1
- WordPress 5.7 compatibility update.
1.1.0
- The password field can be left empty when updating the settings.
1.0.9
- Updated the code to be compatible with WordPress 5.5.
1.0.8
- SMTP Mailer is compatible with WordPress 5.3.
1.0.7
- SMTP Mailer now checks for a valid nonce when sending a test email.
1.0.6
- SMTP Mailer no longer shows the saved password in the settings.
1.0.5
- SMTP Mailer is now compatible with WordPress 4.9.
1.0.4
- Updated the mail() function by setting its minimum requirements to WordPress 4.8.
- “phpmailer_init” action hook is now enabled so it can be used by other plugins.
1.0.3
- Fixed a bug where an apostrophe in the password would cause SMTP authentication failure.
1.0.2
- SMTP Mailer now supports the “wp_mail_failed” hook which fires after a phpmailerException is caught.
- Added a new option to bypass this error on some servers where the SSL certificate is not properly configured – Warning: stream_socket_enable_crypto(): SSL operation failed with code 1. OpenSSL Error messages: error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed.
1.0.1
- First commit