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Super Duper Plugins
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Super Duper SMTP Mail Bridge
Reliable SMTP email delivery with backup failover, rate limiting, domain control, BCC monitoring, and full email log. 100% free.
Super Duper SMTP Mail Bridge ranks #26,331 among WordPress.org plugins with 20+ active installations, is #1,112 of 3,382 in the Communication category, and was last updated Jun 2, 2026. Data from WordPress.org, refreshed twice daily — see methodology.
Tested up to WP 7.0.5 (Current: 7.1.2)
v1.3.3
Current Version v1.3.3
Updated 3 months ago
Last Update on 02 Jun, 2026
Refreshed 11 hours ago
Last Refreshed on
#1,112 of 3,382 in Communication
Top 50% by installs
Rank
#26,331
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No change
Active Installs
20+
+1900%
KW Avg Position
N/A
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No change
Downloads
562
+2 today
Support Resolved
0%
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No change
Rating
0%
Review 0 out of 5
0
(0 reviews)
Next Milestone 30
20+
30+
3,601
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
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- Version
- 1.3.3
- Last Updated
- Jun 02, 2026
- Requires WP
- 6.2+
- Tested Up To
- 7.0.5
- PHP Version
- 8.0 or higher
- Author
- Super Duper Plugins
Support & Rating
- Rating
- ☆ ☆ ☆ ☆ ☆ 0
- Reviews
- 0
- Support Threads
- 0
- Resolved
- 0%
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Frequently Asked Questions
Common questions about Super Duper SMTP Mail Bridge
Any standard SMTP server works: Gmail, Outlook/Office 365, Mailgun, SendGrid, Amazon SES, Postmark, your own mail server, your hosting provider's SMTP – if it speaks SMTP, this plugin connects to it.
Yes. SMTP passwords are encrypted with AES-256-CBC (using OpenSSL) before storage. The encryption key is derived from your WordPress AUTH_KEY salt. Most other SMTP plugins store passwords in plain text or simple base64 encoding.
If you have configured a backup SMTP server, the plugin automatically retries the email through the backup. Both the primary failure and the backup attempt are logged separately, so you have full visibility.
Rate limiting caps the number of emails your site can send per minute, hour, or day. This protects you if a contact form gets spammed, a plugin sends mass notifications, or your site is compromised. Emails exceeding the limit are blocked and logged.
All plugin data is completely removed: options, transients, and the custom log database table. No traces left behind.
Yes. All WooCommerce transactional emails (order confirmations, shipping notifications, password resets) are sent through your configured SMTP server.
Rate limiting, domain whitelisting/blacklisting, BCC monitoring with GDPR compliance, sender domain validation, and AES-256 password encryption are features no other free SMTP plugin offers. If you want maximum control over your email delivery without paying for a Pro license, this is your plugin.
Under GDPR, you may need to prove that a specific email (e.g. a consent confirmation, data deletion notice, or privacy policy update) was actually sent to a user. The email log provides a timestamped record with full content, and the BCC copy gives you an independent second proof stored in a separate mailbox. Together, this creates a verifiable audit trail that can hold up in legal disputes – something no other free SMTP plugin provides out of the box.
