Mailer To Go review (2026): is it worth $15 a month?
Managed SMTP sending for developers and Heroku apps
Black Friday: is there a Mailer To Go sale?
Mailer To Go report card
Weak · out of 4.0 · graded Nov 13, 2026
Best for SMTP sending for developers on Heroku or anywhere
Mailer To Go sends transactional email over SMTP, from $15 a month for 25,000 emails. There is no free plan, and the REST API is still listed as in development.
Who Mailer To Go is for
- Fits if you run an app on Heroku and want SMTP email
- Works for developers who are fine with SMTP and no REST API yet
Who Mailer To Go is not for
- Not for you if you want a free plan, as there isn't one
- Skip it if you need a REST API, which is still in development
- Tight if you add a dedicated IP, which is $30 a month on Growth and Scale
- Watch out: plans bought through Heroku, Addons.io or Build.io are billed and priced separately
Why Mailer To Go gets a 1.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- CValue for moneyStarter is $15 a month for 25,000 emails, the middle of this category's prices. Extra email is $1.00 per 1,000, and a dedicated IP is $30 a month.
- FFree plan and trialNothing free: there is no free plan or trial, so every plan is paid from day one.
- CFeaturesSMTP sending, delegated DNS, suppression handling, delivery webhooks and inbound routing. The REST API is still in development, so sending today is SMTP only.
- CEase of useNo store rating on record. It takes sending domains and DNS to set up, but it is a plain SMTP service.
- BPlatforms and integrationsWeb, SMTP, and Heroku, Addons.io and Build.io add-ons, plus Rails, Django, Laravel and Nodemailer guides. No apps.
What these grades rest on. Graded from this listing, whose facts were read from Mailer To Go's own pages on 13 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/mailer-to-go#review"><img src="https://toolgpa.com/badge/mailer-to-go.svg" alt="Mailer To Go: 1.8 GPA on ToolGPA" width="196" height="56"></a>Where Mailer To Go stands among email sending services
Mailer To Go's GPA of 1.8 is higher than 4 of the 50 other email sending services we grade, and level with 4.
It stands best on platforms and integrations (B, above 17 of 50) and worst on free plan and trial (F, above 0).
Its paid plans start at $15 a month, against a middle price of $15 for the category: 19 of the 41 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 7 tools score higher and cost less.
Each grade against the category
Every bar is all 51 email sending services we grade, cut by the letter each got. Mailer To Go’s own letter is outlined.
- CValue for moneyAbove 8 of 50, level with 16
- FFree plan and trialAbove 0 of 50, level with 7
- CFeaturesAbove 0 of 50, level with 29
- CEase of useAbove 7 of 50, level with 43
- BPlatforms and integrationsAbove 17 of 50, level with 32
Price against what you get
Each dot is one of 44 email sending services. 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 Mailer To Go, or make your own?
Keep it
To replace Mailer To Go you would be making mail servers with a good name among inbox providers. 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: 42 of the 50 other email sending services grade higher. It costs $180 a year.
What you could not
- Mail servers with a good name among inbox providers.
- It plugs into other products, Heroku, Addons.io and Build.io among them, and has an API.
What this rests on. Mailer To Go’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 Mailer To Go?
Mailer To Go is a transactional email service for developers that sends over SMTP, with webhooks for delivery events and inbound routing. A REST API is listed as in development. It is also sold as an add-on on Heroku, Addons.io and Build.io.
Worth knowing
- There is no free plan; every plan is paid.
- The pages say a REST API is in development, so sending today is over SMTP.
- A dedicated IP is a $30 per month add-on on Growth and Scale, on request.
- Plans bought through Heroku, Addons.io or Build.io are billed there and priced separately from the direct plans.
Key features
- SMTP sending
- Standard SMTP on port 587 (STARTTLS) or 465 (SSL), so framework mailers work by pointing them at the dashboard credentials.
- Delegated DNS
- Publish one NS record and the service publishes and rotates SPF, DKIM and DMARC records for a dedicated sending subdomain.
- Suppression handling
- Hard bounces and spam complaints are added to a suppression list automatically.
- Delivery webhooks
- Webhook URLs receive delivered, bounced, opened and clicked events.
- Inbound routing
- Inbound mail can be forwarded by rule or delivered to an app as a webhook.
- Marketplace add-ons
- Available as an add-on on Heroku, Addons.io and Build.io, which sets SMTP credentials as config variables.
Mailer To Go pricing
As of Nov 13, 2026, Mailer To Go is a paid product, starting at $15 per month for 25,000 emails.
- Starts at
- $15 per month for 25,000 emails
- Free plan
- None
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Starter | $15per month for up to 25,000 emails, billed monthly | 5 sending domains, 30 days of event history, email support. Extra email is $1.00 per 1,000. |
| Growth | $50per month for up to 250,000 emails, billed monthly | 25 sending domains, 90 days of event history, priority support. Extra email is $0.60 per 1,000. |
| Scale | $150per month for up to 1,000,000 emails, billed monthly | Unlimited sending domains, 12 months of event history, priority support. Extra email is $0.40 per 1,000. |
Read from mailertogo.com on Nov 13, 2026. Prices change, so confirm with Mailer To Go before you buy.
Ways to pay less
- Annual discount20% off with annual billing
The plans page says annual billing saves 20% on the direct plans.
Stated on mailertogo.com
Works with
- Heroku
- Addons.io
- Build.io
- Rails
- Django
- Laravel
- Nodemailer
Mailer To Go alternatives
- Mailer To Go vs Mailgun
Free plan · from $15/mo
- Mailer To Go vs Twilio SendGrid
Free trial · from $19.95/mo
- Mailer To Go vs Postmark
Free plan · from $15/mo
- Mailer To Go vs Amazon SES
Free trial
- Mailer To Go vs SMTP2GO
Free plan · from $15/mo
Common questions
Does Mailer To Go have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Mailer To Go is listed for Web.
Does Mailer To Go have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Mailer To Go is listed for Web.
Is Mailer To Go open source?
Mailer To Go is not described as open source on its own site, as read on Nov 13, 2026.
Does Mailer To Go have an API?
Yes. Mailer To Go offers a public API, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.