Title: SMTP Plugins
Last modified: February 22, 2026

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# SMTP Plugins

 *  Resolved [embrasurespace](https://wordpress.org/support/users/embrasurespace/)
 * (@embrasurespace)
 * [3 months ago](https://wordpress.org/support/topic/smtp-plugins/)
 * It appears that the February 19th update caused some conflicts with some SMTP
   plugins like SureMail where cleantalk may be preventing the plugins from sending
   using the designated APIs. It may be worth investigating.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  Plugin Support [amagsumov](https://wordpress.org/support/users/amagsumov/)
 * (@amagsumov)
 * [3 months ago](https://wordpress.org/support/topic/smtp-plugins/#post-18829600)
 * Hello [@embrasurespace](https://wordpress.org/support/users/embrasurespace/),
 * Thank you for reaching out.
 * Could you please provide a few more details?
    - Which website is currently being affected?
    - Are you seeing any specific error messages or pages when the blocking occurs?
 * If you prefer not to share these details publicly, reach out to us directly through
   our private support system: [https://cleantalk.org/my/support/open](https://cleantalk.org/my/support/open)
 * Thank you.
 *  Plugin Support [katereji](https://wordpress.org/support/users/katereji/)
 * (@katereji)
 * [1 month, 3 weeks ago](https://wordpress.org/support/topic/smtp-plugins/#post-18867849)
 * Hello,
 * We have investigated this further and determined that the root cause of the issue
   cannot be resolved directly within our plugin’s code. Our developers have created
   a temporary fix for the SureMail plugin.
 * We have contacted the SureMail support team and shared our research results with
   them here: [https://wordpress.org/support/topic/improvement-to-codebase-to-be-more-fluent-with-other-modules/](https://wordpress.org/support/topic/improvement-to-codebase-to-be-more-fluent-with-other-modules/)
 * They have promised to make the necessary changes to their plugin to resolve this.
   Please keep an eye on their changelog and reach out to them directly for further
   updates as the solution progresses.
 * I’m going to mark this thread as “resolved”.

Viewing 2 replies - 1 through 2 (of 2 total)

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 * ![](https://ps.w.org/cleantalk-spam-protect/assets/icon-256x256.gif?rev=3539767)
 * [Anti Spam for Contact Forms, Comments & Online Stores - CleanTalk](https://wordpress.org/plugins/cleantalk-spam-protect/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/cleantalk-spam-protect/#faq)
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 * 2 replies
 * 3 participants
 * Last reply from: [katereji](https://wordpress.org/support/users/katereji/)
 * Last activity: [1 month, 3 weeks ago](https://wordpress.org/support/topic/smtp-plugins/#post-18867849)
 * Status: resolved