Mailster review (2026): is it worth $79 a year?
Email newsletter plugin that runs inside WordPress
Black Friday: is there a Mailster sale?
Mailster report card
Weak · out of 4.0 · graded Nov 13, 2026
Best for newsletters sent from inside your own WordPress site
Mailster is a WordPress plugin that sends newsletters from your own site, with unlimited subscribers on every tier. It costs $79 a year for one site, but you still need a separate sending service, only 3 automations come on the entry tier, and it's no use if you're not on WordPress.
Who Mailster is for
- Fits if you already run WordPress and want your subscriber list kept in your own database
- Works for sites that send their latest posts or products to a list
Who Mailster is not for
- Skip it if your site isn't on WordPress, because the plugin only runs there
- Tight if you want to send for free: there's no free edition and no trial
- Watch out: it renews at full price after the first year, and each licence covers one site
- Not for you if you don't want to set up a separate sending provider, since Mailster doesn't send the mail itself
- Tight if you need more than 3 automations, which is the Starter limit
Why Mailster gets a 1.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- BValue for money$79 a year for 1 site is about $6.60 a month, inside the cheaper quarter of email tools ($9.99). The first-year price is $39, then it renews at full price, and you pay your sending provider on top.
- FFree plan and trialNo free edition and no trial. There's a demo and a 14-day money-back guarantee, which isn't the same thing.
- CFeaturesNewsletters, drip emails, post-triggered sends, a template editor and segmentation. But Starter has 3 automations, and it doesn't send mail itself, so delivery depends on the provider you connect.
- DEase of useYou need a WordPress site that you host and keep updated, plus an SMTP or email-service connection. No rating on record.
- BPlatforms and integrationsWeb only, inside WordPress, but it connects to Mailgun, SendGrid, SparkPost, Mailjet, Gmail and Gravity Forms, among others.
What these grades rest on. Graded from this listing, whose facts were read from Mailster's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/mailster#review"><img src="https://toolgpa.com/badge/mailster.svg" alt="Mailster: 1.8 GPA on ToolGPA" width="196" height="56"></a>Where Mailster stands among email marketing and newsletter tools
Mailster's GPA of 1.8 is higher than 2 of the 57 other email marketing and newsletter tools we grade, and level with 4.
It stands best on value for money (B, above 44 of 57) and worst on free plan and trial (F, above 0).
Its paid plans start at $6.58 a month when paid by the year, against a middle price of $15 for the category: 2 of the 47 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 3 tools score higher and cost less.
Each grade against the category
Every bar is all 58 email marketing and newsletter tools we grade, cut by the letter each got. Mailster’s own letter is outlined.
- BValue for moneyAbove 44 of 57, level with 9
- FFree plan and trialAbove 0 of 57, level with 8
- CFeaturesAbove 3 of 57, level with 19
- DEase of useAbove 0 of 57, level with 4
- BPlatforms and integrationsAbove 7 of 57, level with 50
Price against what you get
Each dot is one of 50 email marketing and newsletter tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Mailster, or make your own?
Keep it
To replace Mailster you would be making newsletters sent to thousands of people that still reach the inbox. That is not a weekend's work, with an AI app builder or without one.
That makes this kind of software worth paying for, not this one in particular: 51 of the 57 other email marketing and newsletter tools grade higher. It costs $79 a year.
What you could make
- Templates, forms and rSS reader: an app builder makes these well.
What you could not
- Newsletters sent to thousands of people that still reach the inbox.
- Email sent in volume that still reaches the inbox.
- It plugs into other products, Mailgun, SendGrid and SparkPost among them.
What this rests on. Mailster’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Mailster?
Mailster is a premium WordPress plugin for sending newsletters and automated emails from your own site. Subscribers are stored in the site's own database, and mail can go out through any email provider or an SMTP connection. It is licensed per year for one site, with unlimited subscribers on every tier.
Worth knowing
- It runs only inside WordPress, and every licence covers one site or domain.
- There is no free edition; the site offers a demo and a 14-day money-back guarantee.
- Updates and support need an active licence. The plugin keeps working after expiry, but renewals are at full price.
- Mailster does not send mail itself. Deliverability depends on the email provider or server you connect, and the vendor recommends a dedicated provider.
Key features
- Newsletters and automation
- Send newsletters, welcome emails, birthday emails, drip campaigns and autoresponders. The number of automations depends on the tier.
- Send your latest posts
- Send new posts, products, events or other custom post types, and use them to trigger automations.
- Editor and templates
- A drag-and-drop editor with more than 400 free and premium templates.
- Any sending provider
- Mail can go out through SMTP or an email service provider; integrations are available for services such as Mailgun, SendGrid, SparkPost, Mailjet and Gmail.
- Segmentation and tracking
- Segment subscribers and track opens, clicks, email providers and locations from within WordPress.
- Precheck
- A pre-send check that flags issues in a campaign, capped at 10, 100 or 1,000 runs a month by tier.
Mailster pricing
As of Nov 12, 2026, Mailster is a paid product, starting at $79 per year for 1 site, renewing at full price after a first-year price of $39.
- Starts at
- $79 per year for 1 site, renewing at full price after a first-year price of $39
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Starter | $79per year for 1 site | Unlimited subscribers, 3 automations, 10 prechecks a month, 10 free templates. $39 for the first year in a Black Friday listing; renewals at full price. |
| Professional | $99per year for 1 site | Adds 10 automations, 100 prechecks a month and 7 premium templates. Shown at $49 for the first year in a Black Friday listing, with renewals at the full price. |
| Agency | $199per year for 1 site | Unlimited automations and 1,000 prechecks a month. Shown at $99 for the first year in a Black Friday listing, with renewals at the full price. |
Read from mailster.co on Nov 12, 2026. Prices change, so confirm with Mailster before you buy.
Ways to pay less
- Other savingsFirst-year price in a Black Friday listing
The pricing page currently shows $39, $49 and $99 for Starter, Professional and Agency, against $79, $99 and $199 regular prices, and states that renewals are at full price. It gives no end date.
Stated on mailster.co
Works with
Mailster alternatives
- Mailster vs MailPoet
Free plan · from $8/mo
- Mailster vs FluentCRM
Free plan · from $129/yr
- Mailster vs Groundhogg
Free trial · from $20/mo
- Mailster vs Mailcoach
Free trial · from $9.99/mo
- Mailster vs Sendy
From $69 one-time
Common questions
Does Mailster have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. Mailster is listed for Web.
Does Mailster have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. Mailster is listed for Web.
Is Mailster open source?
Mailster is not described as open source on its own site, as read on Nov 12, 2026.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 12, 2026.