by Imtiaz Epu
1 (0 reviews)
MTX Email DNS Validator for Contact Form 7
Advanced email validation for Contact Form 7 using DNS/MX records and SMTP verification to prevent invalid email submissions.
Compatible with WP 6.9
v1.1.0
Current Version v1.1.0
Updated 2 weeks ago
Last Update on 01 Feb, 2026
Refreshed 12 hours ago
Last Refreshed on
Rank
#56,223
—
No change
Active Installs
1+
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No change
KW Avg Position
76.3
—
No change
Downloads
25
+1 today
Support Resolved
0%
—
No change
Rating
20%
Review 1 out of 5
1
(0 reviews)
Next Milestone 10
0+
10+
45,962
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
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Rank Changes
Current
#56,223
Change
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1.0
0 reviews
Overall
20%
5
0
(0%)
4
0
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3
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2
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1
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Tracked Keywords
Showing 3 of 3| Keyword | Position | Change | Type | Updated |
|---|---|---|---|---|
| mx records | 15 | — | Tag | 15 hours ago |
| smtp verification | 78 | — | Tag | 15 hours ago |
| dns | 136 | — | Tag | 15 hours ago |
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- Version
- 1.1.0
- Last Updated
- Feb 01, 2026
- Requires WP
- 6.2+
- Tested Up To
- 6.9
- PHP Version
- 8.1 or higher
- Author
- Imtiaz Epu
Support & Rating
- Rating
- ★ ☆ ☆ ☆ ☆ 1
- Reviews
- 0
- Support Threads
- 0
- Resolved
- 0%
Keywords
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Frequently Asked Questions
Common questions about MTX Email DNS Validator for Contact Form 7
Yes, the plugin integrates seamlessly with Contact Form 7's validation hooks.
DNS Mode checks if the domain can receive emails (fast, ~0.5 seconds). DNS+SMTP Mode also verifies if the specific mailbox exists (thorough, ~2-5 seconds). Abstract API Mode provides comprehensive validation including deliverability, quality scoring, risk assessment, disposable detection, and breach history. Example: epu@imtiazepu.com - DNS mode: Validates imtiazepu.com has MX records - DNS+SMTP mode: Validates both domain AND that mailbox epu exists - Abstract API mode: All of the above PLUS quality score, risk level, disposable check, breach history
Abstract API is a third-party email validation service that provides comprehensive email verification including deliverability status, quality scoring, risk assessment, disposable email detection, and data breach history. To get an API key: 1. Visit Abstract API Email Validation 2. Sign up for a free account 3. Copy your API key from the dashboard 4. Paste it in the plugin settings under "Abstract API Key" The free tier includes a limited number of API calls per month.
DNS Mode: Very minimal impact (~0.5 seconds) DNS+SMTP Mode: Adds 2-5 seconds per submission, but prevents invalid mailboxes DNS lookups are cached for 24 hours by default, so repeated submissions from the same domain are instant.
Yes, you can set global error messages or customize them per-form.
Contact Form 7 already validates email format. This plugin adds DNS/MX record and optional SMTP mailbox validation on top of that.
Some mail servers block SMTP verification for privacy/security reasons. In these cases, the plugin treats the result as valid to avoid false positives.
A catch-all domain accepts ANY email address, even ones that don't exist. For example, if domain.com is configured as catch-all, emails to realuser@domain.com, fakename@domain.com, and anything@domain.com will all be accepted by the mail server. The Problem: You can't verify if a specific mailbox actually exists on a catch-all domain. The Solution: The plugin can detect catch-all domains by testing with a random impossible email address. If that also gets accepted, the domain is catch-all.
- Enable rejection (default): Better spam protection, ensures only real mailboxes - Disable rejection: More lenient, accepts all catch-all domains This setting is only available when using DNS+SMTP validation mode.
By default, all plugin data (settings, logs, and database tables) is preserved when you uninstall the plugin. This prevents accidental data loss. If you want to completely remove all plugin data, you can enable "Delete all data on uninstall" in Settings → Data Management. When enabled, uninstalling the plugin will delete: * Plugin settings * Validation logs database table * Per-form configurations * DNS cache * User preferences (welcome pointer dismissals)