Who should use Flex SMTP?

Flex SMTP is a B2B product built for wordPress site owners and administrators.

Yes — Flex SMTP is free to use.

What platforms does Flex SMTP run on?

Flex SMTP runs on the web. It can also be self-hosted.

Is Flex SMTP still active?

Unverified. Flex SMTP has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to Flex SMTP?

Similar projects tracked by PulseGate include SMTPify, Smooth SMTP, and Lean SMTP.

Who develops Flex SMTP?

Flex SMTP is developed by Flex Plugins.

When did Flex SMTP launch?

Flex SMTP first shipped in 2026.

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Flex SMTP

Name: Flex SMTP
Author: Flex Plugins

wordpress.orgEmail & inbox

Flex SMTP is a WordPress plugin that routes wp_mail() messages through SMTP or transactional email provider HTTP APIs. It provides provider presets, sender controls, test emails, and searchable delivery logs for WordPress sites and Flex plugin users.

FreeWebSelf-hosted

Visit wordpress.org

Overview

8 features

In the Email & inbox space, Flex SMTP takes a focused approach. It focuses on delivering reliable WordPress email when default mail delivery or outbound SMTP ports are unavailable. Flex SMTP is a B2B product aimed at wordPress site owners and administrators. Flex SMTP is free to use. It runs on the web, and it can be self-hosted.

It is developed by Flex Plugins, and it first shipped in 2026. Key capabilities include SMTP delivery, HTTP API delivery, and provider presets. The interface is available in English and French. It exposes integrations via a public API.

Summary written by a language model from the project’s public pages.

SMTP delivery
HTTP API delivery
Provider presets
Test email
Delivery log
Sender controls
Log retention
From replacement

Built with & integrations

Connectors

API

Runs on

BrowserSelf-hosted

Trust & compliance

Verified signals

HTTPSPrivacy PolicyFree tierMulti-language

Legal

Indexing history

What PulseGate has recorded for this listing

Nothing recorded for this listing in this window.

Frequently asked questions about Flex SMTP

What is Flex SMTP?: Flex SMTP focuses on delivering reliable WordPress email when default mail delivery or outbound SMTP ports are unavailable. It is catalogued under Email & inbox on PulseGate.
Who should use Flex SMTP?: Flex SMTP is a B2B product built for wordPress site owners and administrators.
Is Flex SMTP free?: Yes — Flex SMTP is free to use.
What platforms does Flex SMTP run on?: Flex SMTP runs on the web. It can also be self-hosted.
Is Flex SMTP still active?: Unverified. Flex SMTP has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to Flex SMTP?: Similar projects tracked by PulseGate include SMTPify, Smooth SMTP, and Lean SMTP.SMTPify Smooth SMTP Lean SMTP
Who develops Flex SMTP?: Flex SMTP is developed by Flex Plugins.
When did Flex SMTP launch?: Flex SMTP first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
Languages: English, French
First seen: 31 Aug 2026
Built for: WordPress site owners and administrators
Model: B2B
Solves: Delivering reliable WordPress email when default mail delivery or outbound SMTP ports are unavailable.

Registered as

WordPress.org: flex-smtp

Developer

Flex Plugins

Index record

Indexed: 31 Aug 2026
Lifecycle: Alive
First seen: Aug 2026
Last seen: 31 Aug 2026

Identity audit (13)

Slug: flex-smtp-wordpress-org
Lifecycle state recorded: 31 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 31 Aug 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 31 Aug 2026
Canonical URL: https://wordpress.org/plugins/flex-smtp

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