
Click2Mail
MappyMail
Sendz.net
MailXstream
Mail A Letter
Lob
LetterStream
Mailform is the easiest way to print and mail documents online.

NiftyImages
Sendtric
OpenAlternative
MailChimp
CountdownMail
Postmark
Mailtimer.io
Real-time, open-time content for email: countdown timers, dynamic images, live product picks, geo-targeted maps, one-click surveys, and scratch-card rewards. No code, no ESP integration, rendered fresh every time someone opens.

Which is more popular?
Based on our record, Mailform seems to be more popular. It has been mentioned 6 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | mailform.io | alterable.com |
| Pricing | ||
| Platforms | — | |
| Company | — | Startup from the United States · 1 - 9 employees |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Mailform yet.
Alterable adds real-time, open-time content to email campaigns, no coding, no ESP integration, no resends. Every asset is a single image URL that renders fresh the moment a subscriber opens the message, not the moment you hit send. Countdown timers count down live in the inbox. Choose a fixed...
What each product offers, as listed by its team.


Possible disadvantages
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Mailform and Alterable.
Alterable's answer:
Most tools in this space (NiftyImages, Sendtric, MotionMail, CountdownMail) do one thing well, usually just countdown timers. Alterable is a single platform for six distinct open-time content types, timers, dynamic images, live product data, geo-targeted maps, surveys, and scratch-card rewards, all rendered the same way: one image tag, no ESP integration, no JavaScript.
That "just an image" approach is also what makes it universal: it works in every major email client without exception, since there's nothing for Outlook or Gmail to selectively support or block.
The rules engine is shared across all six content types too. The same conditions (location, weather, device, time of day, stock level) that pick a dynamic image can pick a product, a map location, or a timer variant, so teams build a targeting logic once and reuse it everywhere instead of learning a separate tool per feature.
Alterable's answer:
Against single-purpose timer tools (Sendtric, CountdownMail, MotionMail, CountingDownTo): those platforms do one thing, a countdown widget. Alterable includes countdown timers plus dynamic images, live product data, geo-targeted maps, surveys, and scratch cards, on one account, with one shared rules engine. If a team outgrows "just a timer," there's no second tool to adopt.
Against broader personalization platforms (NiftyImages, Movable Ink): Alterable is free to start with no credit card, and every asset is a plain image tag rather than requiring a native ESP integration or account connection. That keeps setup to minutes and means it works identically across Klaviyo, Mailchimp, HubSpot, GetResponse, or any of 50+ platforms, with no per-ESP configuration to maintain.
Because it's "just an image": there's no JavaScript, no AMP, no interactive-email fallback logic to write or test. It renders the same way in Outlook as it does in Gmail, which is where more elaborate interactive approaches usually break first.
Share your experience with using Mailform and Alterable. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


UPDATE: I got the piece of registered mail I sent to myself! I requested the scan and that worked too. But they never got the postcard (which was sent on April 15 from the same service, mailform.io). I might test it out a little more... Source: over 3 years ago
Hey folks! You may remember some of my posts. I made the mcbroken Terraform provider and the Grafana dashboard to track Elon Musk's jet :D. Well I have another stupid project to share. I thought it would be hilarious to be able to send... Source: almost 4 years ago
Has anyone had experience working with any direct mail businesses? If so, what are your recommendations? I was thinking of Docupost or Mailform. Price is perhaps the most important factor, but lead times and deliveries before deadlines... Source: almost 4 years ago
Tracking Alterable since Feb 2022.
When comparing Mailform and Alterable, you can also consider the following products.


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How to send mail the easy way. Pick a location on the map, write your message or upload a PDF, and we print your letter and mail it for you. Certified mail, photos, and documents. No account required.
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Easily create animated countdown timers on Sendtric to boost your clickthrough rates and increase sales. Free with no watermarks or account required.
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Sendz Prints and Mails your Documents Worldwide
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Discover Open Source Alternatives to Popular Software
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