Improve WordPress email deliverability. Connect Gmail SMTP, Microsoft 365, Brevo, SendGrid, Mailgun, Zoho, Amazon SES, etc. #1 WordPress SMTP Plugin.
Category Scores
Top Issues by Category
maintainability2,018
security1,487
Issues Details
3,907 issues found in latest scan
Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$PNG_TEMP_DIR".
All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '" <a href='{$skip_url}' class='button button-small button-secondary'>{$use_plugin_anonymously_text}</a>"'.
Global constants defined by a theme/plugin should start with the theme/plugin prefix. Found: "FS_API__ADDRESS".
Processing form data without nonce verification.
Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "_fs_text".
$_GET['_psnonce'] not unslashed before sanitization. Use wp_unslash() or similar
Classes declared by a theme/plugin should start with the theme/plugin prefix. Found: "FS_Admin_Menu_Manager".
All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '" $this->_max"'.
Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "active_plugins".
PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit;
A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders.
trigger_error() found. Debug code should not normally be used in production.
All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'.
print_r() found. Debug code should not normally be used in production.
Detected usage of a possibly undefined superglobal array index: $_GET['access_token']. Check that the array index exists before using it.
Detected usage of a non-sanitized input variable: $_GET['_psnonce']
Mismatched text domain. Expected 'post-smtp' but got 'maileroo'.
In footer ($in_footer) is not set explicitly wp_enqueue_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header.
The $text parameter must be a single text string literal. Found: $host
Direct database call without caching detected. Consider using wp_cache_get() / wp_cache_set() or wp_cache_delete().
File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fclose().
wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed.
date() is affected by runtime timezone changes which can cause date/time to be incorrectly displayed. Use gmdate() instead.
| Code | Type | Message | Count |
|---|---|---|---|
| WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedVariableFound | WARNING | Global variables defined by a theme/plugin should start with the theme/plugin prefix. Found: "$PNG_TEMP_DIR". | 1,143 |
| WordPress.Security.EscapeOutput.OutputNotEscaped | ERROR | All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '" <a href='{$skip_url}' class='button button-small button-secondary'>{$use_plugin_anonymously_text}</a>"'. | 952 |
| WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedConstantFound | WARNING | Global constants defined by a theme/plugin should start with the theme/plugin prefix. Found: "FS_API__ADDRESS". | 199 |
| WordPress.Security.NonceVerification.Recommended | WARNING | Processing form data without nonce verification. | 130 |
| WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedFunctionFound | WARNING | Functions declared in the global namespace by a theme/plugin should start with the theme/plugin prefix. Found: "_fs_text". | 126 |
| WordPress.Security.ValidatedSanitizedInput.MissingUnslash | WARNING | $_GET['_psnonce'] not unslashed before sanitization. Use wp_unslash() or similar | 117 |
| WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedClassFound | WARNING | Classes declared by a theme/plugin should start with the theme/plugin prefix. Found: "FS_Admin_Menu_Manager". | 104 |
| WordPress.Security.EscapeOutput.ExceptionNotEscaped | ERROR | All output should be run through an escaping function (see the Security sections in the WordPress Developer Handbooks), found '" $this->_max"'. | 100 |
| WordPress.NamingConventions.PrefixAllGlobals.NonPrefixedHooknameFound | WARNING | Hook names invoked by a theme/plugin should start with the theme/plugin prefix. Found: "active_plugins". | 97 |
| missing_direct_file_access_protection | ERROR | PHP file should prevent direct access. Add a check like: if ( ! defined( 'ABSPATH' ) ) exit; | 96 |
| WordPress.WP.I18n.MissingTranslatorsComment | ERROR | A function call to __() with texts containing placeholders was found, but was not accompanied by a "translators:" comment on the line above to clarify the meaning of the placeholders. | 92 |
| WordPress.PHP.DevelopmentFunctions.error_log_trigger_error | WARNING | trigger_error() found. Debug code should not normally be used in production. | 64 |
| WordPress.Security.EscapeOutput.UnsafePrintingFunction | ERROR | All output should be run through an escaping function (like esc_html_e() or esc_attr_e()), found '_e'. | 63 |
| WordPress.PHP.DevelopmentFunctions.error_log_print_r | WARNING | print_r() found. Debug code should not normally be used in production. | 60 |
| WordPress.Security.ValidatedSanitizedInput.InputNotValidated | WARNING | Detected usage of a possibly undefined superglobal array index: $_GET['access_token']. Check that the array index exists before using it. | 53 |
| WordPress.Security.ValidatedSanitizedInput.InputNotSanitized | WARNING | Detected usage of a non-sanitized input variable: $_GET['_psnonce'] | 52 |
| WordPress.WP.I18n.TextDomainMismatch | ERROR | Mismatched text domain. Expected 'post-smtp' but got 'maileroo'. | 43 |
| WordPress.WP.I18n.MissingArgDomain | ERROR | Missing $domain parameter in function call to __(). | 35 |
| WordPress.WP.EnqueuedResourceParameters.NotInFooter | WARNING | In footer ($in_footer) is not set explicitly wp_enqueue_script; It is recommended to load scripts in the footer. Please set this value to `true` to load it in the footer, or explicitly `false` if it should be loaded in the header. | 34 |
| WordPress.DB.DirectDatabaseQuery.DirectQuery | WARNING | Use of a direct database call is discouraged. | 29 |
| WordPress.WP.I18n.NonSingularStringLiteralText | ERROR | The $text parameter must be a single text string literal. Found: $host | 28 |
| WordPress.DB.DirectDatabaseQuery.NoCaching | WARNING | Direct database call without caching detected. Consider using wp_cache_get() / wp_cache_set() or wp_cache_delete(). | 26 |
| WordPress.WP.AlternativeFunctions.file_system_operations_fclose | ERROR | File operations should use WP_Filesystem methods instead of direct PHP filesystem calls. Found: fclose(). | 24 |
| WordPress.Security.SafeRedirect.wp_redirect_wp_redirect | WARNING | wp_redirect() found. Using wp_safe_redirect(), along with the "allowed_redirect_hosts" filter if needed, can help avoid any chances of malicious redirects within code. It is also important to remember to call exit() after a redirect so that no other unwanted code is executed. | 20 |
| WordPress.DateTime.RestrictedFunctions.date_date | ERROR | date() is affected by runtime timezone changes which can cause date/time to be incorrectly displayed. Use gmdate() instead. | 16 |
Latest Snapshot
Findings
3,907
Errors
1,581
Warnings
2,326
Score History
First score snapshot
First scan completed Jun 19, 2026
v3.9.4 · Plugin Check 2.0.0 · Model 2026.06-mvp-static-v2
Jun 19, 2026
v3.9.4
22
Latest
- Findings
- 3,907
- Errors
- 1,581
- Warnings
- 2,326
- Plugin Check
- 2.0.0
- Model
- 2026.06-mvp-static-v2
| Scan | Score | Findings | Errors | Warnings | Plugin | Plugin Check | Model |
|---|---|---|---|---|---|---|---|
| Jun 19, 2026Latest | 22 | 3,907 | 1,581 | 2,326 | v3.9.4 | 2.0.0 | 2026.06-mvp-static-v2 |