10 Best Mailster Alternatives in 2026
Updated September 7, 2026 · Ranked by how closely each plugin matches, from WordPress.org data · How this works
Mailster has 7,000+ active installs on WordPress.org. These 10 plugins share its category or its tags on WordPress.org, are actively maintained, and each has at least 100 active installs. They are ordered by how closely they match, not by our opinion.
The 10 closest alternatives to Mailster
- 1
SendPress Newsletters
Closest match4.5 (60) 1,000+ active installsA Newsletter Plugin for WordPress to create, send, manage and track your Newsletters in one place.
Shares the newsletter signup, newsletters tags on WordPress.org. 1,000+ installs against 7,000+, last updated February 7, 2026.
- 2
Kit (formerly ConvertKit) – Email Newsletter, Email Marketing, Membership, Subscribers and Landing Pages
4.8 (90) 40,000+ active installsBuild your email subscriber lists, send email marketing newsletters, create landing pages, build custom subscription forms with the Form Builder block …
Shares the Email Marketing, email newsletter tags on WordPress.org. About 5.7 times the installs, last updated 10 days ago.
- 3
MailMunch – Grow your Email List
4.7 (241) 6,000+ active installsThe best free plugin to get more email subscribers. Beautiful opt-in forms that integrate with MailChimp, Constant Contact, AWeber, Campaign Monitor a …
Shares the newsletters tag on WordPress.org. A similar number of installs, last updated 19 days ago.
- 4
4.6 (245) 2,000+ active installsNewsletter plugin for WordPress to capture subscribers and send beautiful, bulk newsletter emails.
Shares the newsletters tag on WordPress.org. About a third of the installs, last updated 14 days ago.
- 5
FluentCRM – Email Newsletter, Automation, Email Marketing, Email Campaigns, Optins, Leads, and CRM Solution
4.8 (249) 80,000+ active installsThe easiest and fastest Email Marketing, Newsletter, Marketing Automation Plugin & CRM Solution for WordPress
Shares the Email Marketing, email newsletter tags on WordPress.org. About 11 times the installs, last updated 4 days ago.
- 6
ActiveCampaign – The autonomous marketing platform
4.5 (29) 40,000+ active installsAdd ActiveCampaign contact forms and live chat to any post, page, or sidebar. Also enable ActiveCampaign site tracking for your WordPress blog.
Shares the Email Marketing tag on WordPress.org. About 5.7 times the installs, last updated November 14, 2025.
- 7
Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
4.6 (1,169) 50,000+ active installsAdd subscription forms on the website and send newsletters & automatically send post notification about new blog posts once it gets published.
Shares the Email Marketing tag on WordPress.org. About 7.1 times the installs, last updated 12 days ago.
- 8
Poptin – Email Marketing Automation, Newsletter & Exit Pop Ups, Email Popups
4.9 (695) 20,000+ active installsFree email automation, email campaigns, exit intent popup builder, gamified popups with spin the wheel, contact forms & smart pop ups. 🎉
Shares the Email Marketing tag on WordPress.org. About 2.9 times the installs, last updated 5 days ago.
- 9
Email Marketing for WooCommerce by Omnisend
4.9 (168) 40,000+ active installsEmail Marketing, Newsletter, Email Automation, Forms, Pop Up, SMS, Abandoned Cart made easy for WordPress & WooCommerce by Omnisend
Shares the Email Marketing tag on WordPress.org. About 5.7 times the installs, last updated 7 days ago.
- 10
FunnelKit Automations – Email Marketing Automation and CRM for WordPress & WooCommerce
5.0 (346) 20,000+ active installsRecover lost revenue with Cart Abandonment Recovery for WooCommerce. Increase retention with Post Purchase Follow-Up Emails.
Shares the Email Marketing tag on WordPress.org. About 2.9 times the installs, last updated August 5, 2026.
Switching from Mailster: common questions
What is the best alternative to Mailster?
SendPress Newsletters is the closest match: it shares the same WordPress.org tags and has 1,000+ active installs with a 4.5 out of 5 rating.
Which Mailster alternative has the most users?
FluentCRM, with 80,000+ active installs reported by WordPress.org.
Which Mailster alternative is rated highest?
FunnelKit Automations, rated 5.0 out of 5 by 346 reviewers. Only plugins with at least 50 reviews are counted.
Are these Mailster alternatives free?
Every plugin listed here is free to install from WordPress.org. Where WordPress.org marks a plugin as commercial, the developer also sells a paid version or add-ons, and that is shown on each plugin.
How are alternatives chosen?
Automatically, from WordPress.org data: plugins that share a category top 10 with Mailster score highest, then plugins that appear in the same WordPress.org rankings, then plugins with the same tags, weighted so rare tags count more than common ones. Plugins by the same author and plugins rated under 4.0 are left out.
How we choose these alternatives
Nothing on this page is picked by hand. Every day we walk the whole WordPress.org directory, then score every plugin against Mailster on three signals: sharing a category top 10 counts most, then appearing in the same WordPress.org rankings, then carrying the same tags, with rare tags counting for more than common ones like "wordpress". Plugins by the same author are excluded, so an author's own add-ons cannot fill the list, and so is anything rated below 4.0 or with fewer than 100 active installs. The ten highest scores are what you see, in that order. Full methodology.
The bottom line
SendPress Newsletters is the closest match to Mailster by the data we track, and FluentCRM has the widest reach with 80,000+ active installs. FluentCRM shipped the most recent release, on September 3, 2026. The list is rebuilt every day from WordPress.org, so a plugin that stops being maintained drops out on its own.
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What moved this week
One email a week, built from the same daily snapshots these rankings come from: the plugins that climbed, what launched, and one ranking worth a look.