by Kingmailer
5 (0 reviews)
Kingmailer WordPress SMTP
SMTP for sending user registration emails, order emails, contact form emails.
Tested up to WP 6.8 (Current: 6.9)
v0.3.15
Current Version v0.3.15
Updated 6 months ago
Last Update on 28 Jun, 2025
Synced 10 hours ago
Last Synced on
Rank
#16,558
-8 this week
Active Installs
100+
-13%
KW Avg Position
85.4
+0.2 better
Downloads
3K
+1 today
Support Resolved
0%
—
No change
Rating
100%
Review 5 out of 5
5
(0 reviews)
Next Milestone 200
100+
200+
3,404
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
Pro
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Need 87 more installs to reach 200+
Rank Changes
Current
#16,558
Change
Best
#
Downloads Growth
Downloads
Growth
Peak
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5.0
0 reviews
Overall
100%
5
0
(0%)
4
0
(0%)
3
0
(0%)
2
0
(0%)
1
0
(0%)
Tracked Keywords
Showing 5 of 5| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| gmail smtp | 41 | — | Tag | 12 hours ago |
| sendgrid smtp | 43 | — | Tag | 12 hours ago |
| mailgun smtp | 44 | — | Tag | 12 hours ago |
| wordpress smtp | 144 | — | Tag | 12 hours ago |
| smtp | 155 | — | Tag | 12 hours ago |
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Start Tracking FreePlugin Details
- Version
- 0.3.15
- Last Updated
- Jun 28, 2025
- Requires WP
- 3.3+
- Tested Up To
- 6.8
- PHP Version
- N/A
- Author
- Kingmailer
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 0
- Support Threads
- 0
- Resolved
- 0%
Keywords
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Frequently Asked Questions
Common questions about Kingmailer WordPress SMTP
Account alerts (subscription ending, credit card expiring, etc.)
Abandoned cart notifications
Event notifications
Order confirmations and purchase receipts
Responses to customer service inquiries
Password reminders or resets
Requests for feedback
Subscription welcome emails
Abandoned cart notifications
Event notifications
Order confirmations and purchase receipts
Responses to customer service inquiries
Password reminders or resets
Requests for feedback
Subscription welcome emails
Your domain
From name
From address
API-key
From name
From address
API-key
Visit Kingsmtp.com click on sign up.
Click on the link in the activation email to activate your account
You now have a Kingmailer-account.
How much does Kingmailer cost?
Kingmailer, in case you will upgrade, only costs $5 p/mo, you can sign up and test for free. No credit card required.
Does Kingmailer WordPress SMTP work with WooCommerce?
Yes. Kingmailer WordPress SMTP works perfectly with WooCommerce.
Which plugins work with Kingmailer WordPress SMTP?
Woocommerce
WPForms
Elementor Forms
Contact Form 7
Gravity Forms
Fast Secure Contact Form
Visual Forms Builder
Contact Form Builder
PlanSo Forms
Quform
MyMail Newsletter by revaxarts
SendPress Newsletters
WP HTML Mail
Email Templates
WordPress Leads
...etc
All plugins that uses the WordPress API wp_mail to send emails.
Which port does Kingmailer support?
The Kingmailer WordPress SMTP plugin is designed for port 587. Other ports that we support are 25, 2525 and 465.
Is the connection encrypted?
Yes. All emails are encypted with TLS.
Does Kingmailer also accept Bitcoin?
Yes.
Testing the configuration fails when using the HTTP API
Your web server may not allow outbound HTTP connections. Set Use HTTP API to "No", and fill out the configuration options to SMTP and test again. A different possibility may be: your server IP is blocked by Spamhaus or other services that regulates spam. Please check if your IP is not blacklisted.
Can Kingmailer WordPress SMTP be configured globally for WordPress Multisite?
Kingmailer WordPress SMTP plugin is not yet tested with WordPress Multisite.
The plain text alternative of my mail looks different from my template
Plain text alternatives are for mail clients that cannot process HTML. As such, html tags are stripped from the plain text alternative. This is done before applying the wp_mail filters.
How do I get support?
Feel free to send us an email wordpress@kingsmtp.com or start a topic in the support forum.
Click on the link in the activation email to activate your account
You now have a Kingmailer-account.
How much does Kingmailer cost?
Kingmailer, in case you will upgrade, only costs $5 p/mo, you can sign up and test for free. No credit card required.
Does Kingmailer WordPress SMTP work with WooCommerce?
Yes. Kingmailer WordPress SMTP works perfectly with WooCommerce.
Which plugins work with Kingmailer WordPress SMTP?
Woocommerce
WPForms
Elementor Forms
Contact Form 7
Gravity Forms
Fast Secure Contact Form
Visual Forms Builder
Contact Form Builder
PlanSo Forms
Quform
MyMail Newsletter by revaxarts
SendPress Newsletters
WP HTML Mail
Email Templates
WordPress Leads
...etc
All plugins that uses the WordPress API wp_mail to send emails.
Which port does Kingmailer support?
The Kingmailer WordPress SMTP plugin is designed for port 587. Other ports that we support are 25, 2525 and 465.
Is the connection encrypted?
Yes. All emails are encypted with TLS.
Does Kingmailer also accept Bitcoin?
Yes.
Testing the configuration fails when using the HTTP API
Your web server may not allow outbound HTTP connections. Set Use HTTP API to "No", and fill out the configuration options to SMTP and test again. A different possibility may be: your server IP is blocked by Spamhaus or other services that regulates spam. Please check if your IP is not blacklisted.
Can Kingmailer WordPress SMTP be configured globally for WordPress Multisite?
Kingmailer WordPress SMTP plugin is not yet tested with WordPress Multisite.
The plain text alternative of my mail looks different from my template
Plain text alternatives are for mail clients that cannot process HTML. As such, html tags are stripped from the plain text alternative. This is done before applying the wp_mail filters.
How do I get support?
Feel free to send us an email wordpress@kingsmtp.com or start a topic in the support forum.