MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc.

80 Quality Score

Active Installs

18/30

With 10,000 active installs, it sits well behind category leaders like Popup Maker (700,000) and MailPoet (500,000), suggesting limited adoption outside niche users.

Update Freshness

25/25

Updated July 2026 and tested against WordPress 7.0, the plugin is clearly and consistently maintained by an active developer.

User Rating

14/15

A 96/100 rating from 434 reviews is strong, though the smaller sample size compared to top alternatives means the score carries slightly less weight.

Support Health

8/15

Only one support thread on record, resolved at 100%, indicates limited community traffic, so buyers should not expect a bustling forum of shared solutions.

WP Compatibility

15/15

Requires WordPress 6.4 and PHP 7.4, which is current and broadly compatible with modern hosting environments.

Scores higher than 78% of indexed plugins

About

Create popup, optin forms using easy form builder & popup maker. Send automated email to subscribers — Mailchimp, ActiveCampaign, Campaign Monitor etc

Active Installs 10k+

Rating ★★★★½ 4.8/5

Last Updated 2026-08-28 11:48am GMT

Requires WordPress 6.4+

Tested Up To 7.1

Requires PHP 7.4+

Security History

7 known vulnerabilities, all patched

1 Critical 1 High 5 Medium

Most recent: July 29, 2026

View details ▸

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.78.0 - Authenticated (Contributor+) Stored Cross-Site Scripting Medium

July 29, 2026 Patched in ["1.2.78.1"] CVE-2026-66703

MailOptin – Popup, Optin Forms & Email Newsletters for Mailchimp, HubSpot, AWeber Etc. <= 1.2.77.3 - Unauthenticated Privilege Escalation Critical

July 9, 2026 Patched in ["1.2.78.0"] CVE-2026-57813

MailOptin <= 1.2.75.0 - Authenticated (Administrator+) Stored Cross-Site Scripting Medium

September 3, 2025 Patched in ["1.2.75.1"] CVE-2025-58596

Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin <= 1.2.70.3 - Authenticated (Contributor+) Stored Cross-Site Scripting Medium

September 23, 2024 Patched in ["1.2.70.4"] CVE-2024-8628

MailOptin <= 1.2.54.0 - Authenticated (Admin+) Cross Site Scripting Medium

January 20, 2023 Patched in ["1.2.54.1"] CVE-2023-23980

MailOptin <= 1.2.49.0 - Missing Authorization to Cache Deletion Medium

September 23, 2022 Patched in ["1.2.50.0"] CVE-2022-36340

Popup, Optin Form & Email Newsletters for Mailchimp, HubSpot, AWeber – MailOptin <= 1.2.35.1 - Authorization Bypass High

June 30, 2021 Patched in ["1.2.35.2"]

What It Does

MailOptin is an optin form and popup builder that connects WordPress sites to email marketing services like Mailchimp, HubSpot, AWeber, ActiveCampaign, and Campaign Monitor. It lets you build popups, slide-ins, and embedded forms without code, then push collected leads directly into your chosen ESP. It also handles automated newsletter sending from within WordPress.

Who It's For

This plugin is best for small to mid-sized businesses and marketers who run a single WordPress site and want one tool to manage popups, inline optins, and basic newsletter delivery across multiple email platforms. It suits users who want a unified interface rather than juggling separate plugins for each integration.

Who Should Skip It

If you already use a dedicated popup tool like Popup Maker or OptinMonster, or a full email marketing suite like MailPoet, adding MailOptin is redundant. Sites needing deep automation workflows, segmentation, or transactional email will outgrow it quickly.

The Bottom Line

MailOptin earns a solid 79.81/100 overall, with standout maintenance and a high user rating offset by modest adoption and limited support activity. It is a capable, well-kept all-rounder for sites that want popups and ESP connectivity in one package, but busier projects may prefer a category leader with a larger install base and richer third-party ecosystem.

Choose Popup Maker if you need a battle-tested popup plugin with 700,000 installs and more third-party extensions, and you are happy wiring up your own email integration.

Hostinger Reach – AI-Powered Email Marketing for WordPress 89/100

Pick Hostinger Reach if you want AI-assisted email campaign creation and are already hosted with Hostinger or want an all-in-one email tool with a million-install track record.

MC4WP: Mailchimp for WordPress 89/100

Go with Mailchimp for WordPress if you are firmly committed to Mailchimp and want a lightweight, focused integration that has a million installs behind it.

MailPoet – Newsletters, Email Marketing, and Automation 89/100

Select MailPoet if you prefer to host newsletters and automation inside WordPress itself rather than relying on an external ESP.

Popup Builder & Popup Maker for WordPress – OptinMonster Email Marketing and Lead Generation 87/100

Opt for OptinMonster when advanced targeting, exit-intent technology, and conversion optimization features matter more than price or breadth of ESP integrations.