Descrição
Add Mail SMTP settings for WordPress
Looking to modify the SMTP on your WordPress site?
Our Custom SMTP solution offers you this possibility, allowing you to easily change your WordPress SMTP settings, ensuring your emails consistently land in the recipient’s inbox.
Custom SMTP solves your email deliverability problems by reconfiguring WordPress to use a proper SMTP provider when sending emails.
What’s more, our intuitive settings page and comprehensive documentation will guide you through the process, making the task of modifying your SMTP settings easier than ever.
Custom SMTP is a free tool, packed with all the essential features you need to send your WordPress emails with absolute confidence!
Instalação
- Install Custom SMTP by WPForms either via the WordPress.org plugin repository or by uploading the files to your server.
- Navigate to the Settings > Custom SMTP in the WordPress admin.
- Edit the settings using your chosen SMTP option (SMTP.com, Brevo (formerly Sendinblue), Mailgun SMTP, SendGrid SMTP, Postmark, SparkPost, Gmail SMTP, or Other SMTP) and adhere to the instructions for configuration.
1, 2, 3: You’re done!
Avaliações
Colaboradores e desenvolvedores
“Custom SMTP: Email Deliverability – FREE & Easy-to-use” é um programa de código aberto. As seguintes pessoas contribuíram para este plugin.
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Registro de alterações
1.9.0
Release Date – December 5, 2025
Security
* SMTP password is now encrypted in the database using AES-256-CBC with WordPress salts.
* Password field no longer displays the stored value (shows placeholder instead).
Added
* New “Test Connection” button to verify SMTP settings without sending an email.
* New “SMTP Authentication” option (Yes/No) to support relay servers without authentication.
* Improved error messages: common PHPMailer errors are now translated to user-friendly messages.
Changed
* Test buttons now show “Test Connection” and “Send Test Email” separately.
* Password field shows “Leave empty to keep current password” when a password is already saved.
Note
* Existing plaintext passwords will continue to work and will be encrypted on next save.
1.8.1
Release Date – December 5, 2025
Fixed
* WordPress 6.9 compatibility: Use wp_mail_from filter instead of setting From in phpmailer_init (fixes “Invalid address” error).
* Fixed test email button not working due to duplicate PHPMailer hooks.
Changed
* Breaking: “Mail From” field moved from Optional to Main settings (now required for WordPress 6.9+).
* Test button now auto-saves settings before sending test email.
* Improved error messages: shows which required fields are missing.
* Disabled SMTPAutoTLS when security is set to “None” (fixes Mailpit/local testing).
1.8.0
Release Date – December 4, 2025
Fixed
* WordPress 6.9 compatibility: Fixed email sending failure with AWS SES and other SMTP providers that require verified sender addresses.
* Added proper Envelope-From (Sender/Return-Path) configuration to comply with WordPress 6.9 PHPMailer changes.
* Test emails now correctly use the configured “Mail From” address as the envelope sender.
Changed
* Minimum WordPress version updated to 6.0.
* Minimum PHP version updated to 7.4.
Note
* Users must configure the “Mail From” field in optional settings with a verified email address (especially important for AWS SES users).
1.7
Release Date – July 5, 2024
Improved
* Improved security of saved options with appropriate validation and sanitization.
* Code optimization by removing unused code comments and adding value checks before use.
* Split the main custom-smtp.php file into several files to improve maintainability and readability.
* Creation of includes/admin, includes/smtp and includes/utils folders to organize code by functionality.
Fixed
* Fixed validation of secure options to ensure they are either none, ssl or tls.
* Translations : Test email.
1.6
Release Date – April 3, 2024
- New optional settings for all emails sent by WordPress:
- Addition of “Reply To” option: This feature allows you to specify an email address that recipients will send replies to, instead of the original sender’s email address. This is useful when the sender does not wish to receive replies directly.
- Addition of “CC” option: “CC” stands for “Carbon Copy”. When you CC an email to someone, you send them a copy of your email. The CC’d person may not be the main recipient of the email, but they are included for their reference. Everyone who receives the email can see who has been CC’d.
- Addition of “BCC” option: “BCC” stands for “Blind Carbon Copy”. This works like CC, but BCC recipients are hidden from the other recipients. This is useful when you want to inform someone without letting others know that they are also receiving the same email.
- Incompatible plugin detection: This feature helps identify any plugins that are not compatible and could potentially cause issues (proactive approach to prevent conflicts). It will alert you if an installed plugin is not compatible with the Custom SMTP plugin, allowing you to take necessary action.
- Comprehensive test email with configuration information
1.5
Release Date – March 14, 2024
- You can test your SMTP settings before saving them.
- Secure SMTP option accept
Noneas value. - Custom CSS for Settings.
1.4
Release Date – March 12, 2024
- Public launch of the plugin!
- Completely translated into English and French.
- All SMTP options are editable.