The ImprovMX Insider’s Guide
Everything we know about ImprovMX in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
ImprovMX
The Insider’s Guide
Email forwarding and sending for custom domains
Every plan, grade, refund rule and rival among email apps, read from ImprovMX’s own pages.
Made by ImprovMX · checked Nov 12, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from ImprovMX’s own pages, its app-store listings and our grades. Every fact in it is on ImprovMX’s page too, where it is kept up to date. Checked Nov 12, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.4
GPA, above 26 of the 70 other email apps we grade
ImprovMX forwards mail sent to addresses on your own domain to an existing inbox, and paid plans add sending from those addresses over SMTP or an API. It supports catch-all and regex aliases, routing rules, webhooks and email logs. A free plan covers one domain. The company says it has operated since 2013.
To get you started, here are 9 things to know about ImprovMX, taken from its own pages and our grades.
You change your domain's DNS records to point mail at it.
- 1
Best for email forwarding for your own domain
It isn't a mailbox and the free plan has no sending or rules.
- 2
Paid plans start at $4.17 a month when paid by the year
As its pricing page puts it: $50 per year (Light, up to 5 domains).
- 3
There is a free plan
1 domain, 25 aliases, 500 forwarded emails a day, 7-day email logs and API access. No SMTP sending.
- 4
It runs on Web
Web.
- 5
Alias forwarding
Forwards mail from addresses on your domain to one or several destinations, with catch-all and regex aliases, or to a webhook.
- 6
Sending from your domain
Paid plans send over SMTP or a JSON send API using the custom domain, within monthly send limits.
- 7
Routing rules
Customizable rules control how incoming email is routed; the number of rules rises by plan.
- 8
A 2.4 GPA, above 26 of 70
That is against the other email apps we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace ImprovMX 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.
ImprovMX at a glance
- Pricing
- Free plan, from $50 per year (Light, up to 5 domains)
- Free plan
- Yes
- Free trial
- None stated
- Runs on
- Web
- Made by
- ImprovMX, since 2013
- Category
- Email Apps
- Our grade
- 2.4 GPA, fair
The report card
Best for email forwarding for your own domain
ImprovMX forwards mail sent to your own domain to an inbox you already have, free for 1 domain and 25 aliases. It isn't a mailbox and the free plan has no sending or rules. Sending starts at Light for $50 a year.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | B | Free for 1 domain, 25 aliases and 500 forwarded emails a day, and Light is $50 a year, about $4.17 a month. Sending isn't in the free plan. |
| Free plan and trial | B | 1 domain, 25 aliases, 500 forwards a day, 7-day logs and API access for nothing. One person could live on it, as long as they don't need to send. |
| Features | C | Alias forwarding, sending from your domain, routing rules, logs and webhooks, and an API. It does forwarding fully, but that's a smaller job than a mailbox, and sending needs Light. |
| Ease of use | C | No store rating on record. You change your domain's DNS records to point mail at it. |
| Platforms and integrations | C | Web only, with an API and webhooks. No integrations list, phone app or desktop app. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who ImprovMX is for
- Fits if you have a domain and want its mail to land in an inbox you already use
- Works for people who send from their own domain and want plans from $50 a year
Who it is not for
- Not for you if you want a mailbox or email client, as it only forwards
- Tight if you stay free: no SMTP sending and no rules
- Watch out: forwarding stops if a daily or monthly limit is hit until it resets or you upgrade
- Watch out: Enterprise is sold through contact only
Good to know
Good for
- Side projects and small sites that need addresses on a custom domain without hosting a mailbox
- Anyone with many domains forwarding into one inbox
Worth knowing
- ImprovMX forwards mail; it does not host mailboxes or provide a mail client.
- The Free plan has no SMTP sending and no rules; sending needs Light or higher.
- Forwarding stops if a daily or monthly limit is hit until it resets or you upgrade.
- Enterprise is sold through contact only.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$4.17
A month to start, paid by the year. There is a free plan too
ImprovMX has a free plan. Paid plans start at $50 per year (Light, up to 5 domains).
One person could live on it, as long as they don't need to send.
Free
$0
1 domain, 25 aliases, 500 forwarded emails a day, 7-day logs, API access and standard support.
Light
$50
per year, up to 5 domains
25 aliases per domain, 150,000 forwarded and 750 SMTP-sent emails a month, 5 rules per domain.
Premium
$9
per month, up to 30 domains
100 aliases per domain, 150,000 forwarded and 12,000 SMTP-sent emails a month, webhooks.
Pro
$24
per month, up to 100 domains
200 aliases per domain, 450,000 forwarded and 60,000 SMTP-sent emails a month, 50 rules per domain.
Enterprise
Custom
Unlimited domains, aliases and sending, a dedicated account manager and support SLAs.
The free plan
1 domain, 25 aliases, 500 forwarded emails a day, 7-day email logs and API access. No SMTP sending.
Read from improvmx.com on Nov 12, 2026.
Ways to pay less
Annual discount
15% off yearly billing
Yearly billing costs $90 for Premium and $240 for Pro, which the pricing page labels as 15% off.
Stated on improvmx.com
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Email forwarding and sending for custom domains. Here is what it does, as its own site describes it, and what it covers: public API, inbox filtering, transactional email.
Alias forwarding, sending from your domain, routing rules, logs and webhooks, and an API.
- Alias forwarding
- Forwards mail from addresses on your domain to one or several destinations, with catch-all and regex aliases, or to a webhook.
- Sending from your domain
- Paid plans send over SMTP or a JSON send API using the custom domain, within monthly send limits.
- Routing rules
- Customizable rules control how incoming email is routed; the number of rules rises by plan.
- Logs and webhooks
- Email logs help trace missing messages, with retention from 7 days to 180 days on paid plans; webhooks are paid-only.
- Public API
- An API key lets you create domains and aliases and view logs programmatically, on every plan including Free.
Where it runs
- Web
What it works with
Its own pages name no integrations.
ImprovMX is made by ImprovMX, and has been around since 2013.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
26/70
Other email apps it is graded above
ImprovMX's GPA of 2.4 is higher than 26 of the 70 other email apps we grade, and level with 12.
It stands best on free plan and trial (B, above 47 of 70) and worst on features (C, above 0).
Its paid plans start at $4.17 a month when paid by the year, against a middle price of $4.92 for the category: 26 of the 56 others that charge start lower.
On features, ease of use and platforms it scores 2.0 out of 4. 27 tools score higher and cost less.
Each grade against the category
Every bar is all 71 email apps we grade, cut by the letter each got. ImprovMX’s own letter is outlined.
- BValue for moneyAbove 35 of 70
- BFree plan and trialAbove 47 of 70
- CFeaturesAbove 0 of 70
- CEase of useAbove 1 of 70
- CPlatforms and integrationsAbove 5 of 70
Price against what you get
Each dot is one of 67 email apps. Further left costs less; higher up scores better on features, ease of use and platforms. ImprovMX is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace ImprovMX 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.
It costs $50 a year.
What you could not
- Mail servers with a good name among inbox providers.
- Filters that read every message as it arrives.
- An API that other software can build on.
What this rests on. ImprovMX’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.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
SimpleLogin, addy.io, Migadu, Zoho Mail and Fastmail
The 5 tools ImprovMX is most often weighed against, with where each one differs from it.
- 2.4GPA
SimpleLogin
Free plan · from $36/yr
Open-source email aliases that forward to your own inbox.
- Only SimpleLogin lists iOS and Android apps.
- Only SimpleLogin lists a browser extension.
- SimpleLogin is open source and self-hostable, according to its own site.
- 2.6GPA
addy.io
Free plan · from $1/mo
Email alias forwarding that hides your real address from sites.
- Only addy.io lists iOS and Android apps.
- Only addy.io lists a browser extension.
- addy.io is open source and self-hostable, according to its own site.
- 2.2GPA
Migadu
Free trial · from $19/yr
Swiss email hosting with unlimited addresses at a flat price.
- ImprovMX has a free plan. Migadu does not, though it has a free trial.
- ImprovMX also covers inbox filtering and transactional email.
- Migadu also covers calendar and email client.
- 3.2GPA
Zoho Mail
Free plan · from $1/mo
Ad-free business email hosting with calendar, tasks and notes.
- Only Zoho Mail lists macOS, Windows, Linux, iOS and Android apps.
- ImprovMX also covers inbox filtering and transactional email.
- Zoho Mail also covers tasks, calendar and email client.
- 2.8GPA
Fastmail
Free trial · from $3/mo
Paid, ad-free email with calendar, contacts and custom domains.
- ImprovMX has a free plan. Fastmail does not, though it has a free trial.
- Only Fastmail lists Windows, macOS, Linux, iOS and Android apps.
- ImprovMX also covers inbox filtering and transactional email.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
13
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is ImprovMX free?
ImprovMX has a free plan. 1 domain, 25 aliases, 500 forwarded emails a day, 7-day email logs and API access.
How much does ImprovMX cost?
ImprovMX lists 5 plans. Free: $0.
What platforms does ImprovMX work on?
ImprovMX is available on Web.
Does ImprovMX offer any discounts?
ImprovMX publicly lists the following: 15% off yearly billing.
Does ImprovMX have an Android app?
No Android app was listed when its pages were read on Nov 12, 2026. ImprovMX is listed for Web.
Does ImprovMX have an iPhone app?
No iPhone app was listed when its pages were read on Nov 12, 2026. ImprovMX is listed for Web.
Is ImprovMX open source?
ImprovMX is not described as open source on its own site, as read on Nov 12, 2026.
Does ImprovMX have an API?
Yes. ImprovMX offers a public API, according to its own site.
Who makes ImprovMX?
ImprovMX is made by a company of the same name. It dates from 2013.
What are the alternatives to ImprovMX?
The closest alternatives to ImprovMX in our directory are SimpleLogin, addy.io, Migadu, Zoho Mail and Fastmail.
How does ImprovMX compare with other email apps?
ImprovMX's GPA of 2.4 is higher than 26 of the 70 other email apps we grade, and level with 12.
Is ImprovMX good value for money?
ToolGPA grades ImprovMX B for value for money. Its paid plans start at $4.17 a month when paid by the year, against a middle price of $4.92 for the category: 26 of the 56 others that charge start lower.
Could I make my own version of ImprovMX?
To replace ImprovMX you would be making mail servers with a good name among inbox providers.
Where this guide comes from
The prices, plans, platforms and features were read from ImprovMX’s own pages on Nov 12, 2026, and the grades were given on Nov 12, 2026. Graded from this listing, whose facts were read from ImprovMX's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by ImprovMX. Prices change, so check improvmx.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
5,038
Tools graded, in 95 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
5,038
tools graded
95
categories
739
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- ImprovMX, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/improvmx
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "ImprovMX: The Insider's Guide", checked Nov 12, 2026. https://toolgpa.com/tools/improvmx
Know someone choosing between email apps?
Send them this guide: toolgpa.com/tools/improvmx/guide
ToolGPA elsewhere: youtube.com/@toolgpa
See our other guides
The best-graded email apps after ImprovMX, each with an Insider's Guide of its own.
- Email Apps Insider's GuideEvery one of the 74 email apps we grade, compared
- Microsoft Outlook Insider's GuideMicrosoft's email and calendar app for desktop, mobile and web3.6 GPA
- BlueMail Insider's GuideCross-platform email client with a unified inbox and built-in AI3.2 GPA
- GMX Mail Insider's GuideFree webmail with 65GB storage, aliases and a mail collector3.2 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what ImprovMX’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. ImprovMX is a trademark of its owner, and this guide is not made, paid for or approved by ImprovMX. Prices and plans change: check improvmx.com before you buy.