Create popup, optin forms using easy form builder & popup maker. Send automated email to subscribers — Mailchimp, ActiveCampaign, Campaign Monitor etc
As of April 2026, MailOptin is a WordPress popup plugin with 20K+ active installations and a 4.8/5 rating from 434 reviews. It has been downloaded 2.4M+ times in total. Requires WordPress 6.4+ and PHP 7.4+. Available on WordPress.org since 2017. Actively maintained — updated within the last month. Downloads are down 76% this week. Top alternative: Popup Builder & Popup Maker for….
Build popups & optin forms to get more email newsletter subscribers, leads, and sales with our intuitive popup builder plugin! 🚀
MailOptin is a form builder and popup maker for creating popups, subscribe forms, user registration forms, and sending email newsletters.
With the MailOptin popup plugin, you can displays signup forms, targeted messages, and call-to-actions across your website with a popup (lightbox or modal), in-post subscription form, notification bars, slide-in (or scroll box), and sidebar widget. Our easy-to-use popup maker allows you to create beautiful popup and lead generation campaigns in minutes, not hours!
Automatically notify your subscribers and WordPress users every time you publish new content…
After trying IceGram and being tremendously disappointed, I decided to try MailOptIn. My stack includes WP Mail SMTP, MailOptIn, MailJet, and WP Forms. The implementation has been flawless and I love the ability to customize my forms and newsletters with such ease, and with zero issues. Well done MailOptIn.
One of the customer service reps contacted me and offered to create a free campaign for me! I just told him what I wanted, and he did all the work for me. And he did a great job!
ありがとうございます。
Inquired about exporting optin campaigns as we’re rebuilding our WordPress site. Although the feature is on the roadmap, we had to perform the export manually from WordPress tables. Received quick response on the steps and even faster when we got stuck and couldn’t find one of the records in wp_options. Glad we didn’t have to recreate 75+ optin campaign forms 🙂
I have been using the plugin to connect my elementor/wordpress forms to Keap for a few years now and it works great. Recently I have been getting a connection error and had to continually reconnect the plugin with Keap to get it working again. After doing this 2-3 times I contacted their support and they quickly responded and helped resolve the issue by making a tweak on their end. Their support was great. Cannot recommend them more!
| WordPress | 6.4+ requiredTested up to 7.0 |
| PHP | 7.4+ required |
…and 2 more changes
Plugin data sourced from WordPress.org. Analysis and metrics by PluginSift.