Software Alternatives, Accelerators & Startups

SimpleLogin VS Alterable

Compare SimpleLogin VS Alterable and see what are their differences

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SimpleLogin logo SimpleLogin

Receive and send emails anonymously. Create a unique email address for each website to avoid cross-site tracking and protect your inbox from spam, phishing and data breaches.

Alterable logo Alterable

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.
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  • SimpleLogin Landing page
    Landing page //
    2020-03-31

SimpleLogin is an open-source email alias solution that allows you to protect your email via "email alias": just use alias instead of email address everywhere. Emails sent to an alias are forwarded to your mailbox. If you want to reply, just hit "reply" and the reply will come from your alias, keeping your personal email hidden. You can also send emails from alias, making alias just a "normal" email address. Because of that, alias can be used as business email: all SimpleLogin team emails are actually aliases :).

  • Alterable
    Image date //
    2026-08-29
  • Alterable
    Image date //
    2026-08-29
  • Alterable
    Image date //
    2026-08-29
  • Alterable
    Image date //
    2026-08-29
  • Alterable
    Image date //
    2026-08-29

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 deadline for your whole list, an evergreen timer that starts when each subscriber opens, or a per-recipient deadline pulled from a merge tag. Ten visual styles, full color and font control.

Dynamic images show a different visual to every recipient based on location, device, language, weather, temperature, or time of day. A no-code rules builder stacks conditions and maps each combination to its own image variation.

Dynamic products pull live price, stock, and availability at the moment an email opens. Sold-out items hide automatically; low-stock items get a scarcity badge. Sync via CSV, REST API, or a Shopify/BigCommerce connection.

Local maps show each subscriber their nearest store, rendered around their location at open-time. Four map styles, custom markers, and deep links to native navigation apps.

Surveys put a one-click star, number, or emoji rating directly in the email body, no landing page, no login. Results populate a live dashboard as votes arrive.

Scratchers turn a discount into a game: a scratch-card reveal linking to a hosted prize page, with customizable cover art, reveal animations, and (on Pro) multiple weighted prizes.

Every asset works the same way: build it in Alterable's editor, copy one image tag, paste it into any ESP. Because it's just an image, it works in every major email client, no JavaScript or AMP required. Integrates with 50+ platforms including Klaviyo, Mailchimp, HubSpot, Brevo, ActiveCampaign, Constant Contact, GetResponse, AWeber, and Kit.

Also included: 22-language localization, timezone support, real-time analytics, CDN delivery, and REST API access. Free to start, no credit card required.

SimpleLogin

$ Details
freemium $2.99 / Monthly (Premium)
Platforms
Browser iOS Web Mac OSX Android
Release Date
2019 June
Startup details
Country
France

Alterable

$ Details
freemium
Platforms
Web
Release Date
-
Startup details
Country
United States
State
Delaware
City
Claymont
Founder(s)
Matthieu Fauveau, Nicolas Ropiot
Employees
1 - 9

SimpleLogin features and specs

  • Privacy Protection
    SimpleLogin allows users to create email aliases that forward to their real email address, helping to shield their primary email from potential spam and data breaches.
  • Ease of Use
    The service offers a user-friendly interface that makes it simple to generate and manage multiple email aliases without technical expertise.
  • Custom Domains
    Advanced users can integrate their own domains to create custom email aliases, adding a layer of personalization and branding.
  • Open Source
    Being an open-source project, SimpleLogin allows users to inspect the codebase for security vulnerabilities and contribute to its improvement.
  • Integration with Email Clients
    SimpleLogin can be integrated with various email clients, allowing seamless alias management directly from the user's inbox.

Possible disadvantages of SimpleLogin

  • Limited Free Plan
    The free tier of SimpleLogin comes with restrictions on the number of aliases and features available, which might not suffice for heavy users.
  • Subscription Cost
    Accessing premium features requires a paid subscription, which might be a financial consideration for some users.
  • Learning Curve for Advanced Features
    While the basic features are easy to use, advanced functionalities like custom domains may require more time to understand and set up for less tech-savvy users.
  • Dependency on Third-party Email Services
    SimpleLogin forwards emails to existing email accounts, meaning users still rely on third-party email services like Gmail, Yahoo, etc., which may come with their own privacy issues.
  • Potential Downtime
    As with any online service, there may be occasional downtime or maintenance periods affecting the ability to receive forwarded emails in real-time.

Alterable features and specs

  • Countdown Timers
    Live, ticking countdown images embedded in email via a single <img> tag. Re-rendered fresh every time an email is opened.
  • Dynamic Images
    Serves a different image per recipient based on location, device, language, weather, temperature, time of day, or custom rules, rendered at open-time.
  • Dynamic Products
    Product blocks showing live price, stock level, and availability at the moment of open; auto-hides sold-out items, auto-badges low stock.
  • Local Maps
    Geo-targeted map showing each recipient's nearest store or point of interest, rendered at open-time from a CSV-imported location list.
  • Surveys
    One-click star, number, or emoji rating widgets embedded directly in email; no landing page or login required to respond.
  • Scratchers
    Scratch-card-style gamified prize reveal; Alterable hosts the resulting prize page.

Analysis of SimpleLogin

Overall verdict

  • Overall, SimpleLogin is a strong choice for individuals looking to enhance their online privacy and protect their personal email address. Its features, ease of use, and robust security make it a reliable tool.

Why this product is good

  • SimpleLogin is considered good by many for its ability to create and manage multiple email aliases. This can enhance privacy, improve email organization, and reduce spam. It integrates well with existing email services, offering an easy-to-use interface and strong security features. Users have appreciated its ability to maintain anonymity while allowing for seamless communication.

Recommended for

  • Individuals concerned about email privacy
  • Users wanting to reduce spam in their primary inbox
  • People looking to organize emails better
  • Those who need to frequently sign up for services or newsletters without using their real email addresses

SimpleLogin videos

SimpleLogin Review - How Have I Survived Without It!?

Alterable videos

No Alterable videos yet. You could help us improve this page by suggesting one.

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Category Popularity

0-100% (relative to SimpleLogin and Alterable)
Email
100 100%
0% 0
SaaS
0 0%
100% 100
Security & Privacy
100 100%
0% 0
Email Marketing
0 0%
100% 100

Questions & Answers

As answered by people managing SimpleLogin and Alterable.

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

User comments

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Reviews

These are some of the external sources and on-site user reviews we've used to compare SimpleLogin and Alterable

SimpleLogin Reviews

  1. Works great. Best email alias solution.

    Works great. I've been a premium subscriber for a while and everything works well. New features are released frequently.

    Competitors: Burner Mail, AnonAddy, 33Mail
    Pros:    Reliable|Open-source
  2. Reliable

    SimpleLogin is the best email alias service. Having used it for several months now, for both my personal and pro emails and everything just works.

    The team is very reactive and new features are constantly released. They are also transparent about how emails are handled.

    Open source and can be self-hosted, I guess we cannot ask more from an email service.

    Competitors: 33Mail
    Pros:    Simple|Reliable|Simple pricing
    Cons:    Ui

Alterable Reviews

We have no reviews of Alterable yet.
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Social recommendations and mentions

Based on our record, SimpleLogin seems to be more popular. It has been mentiond 273 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

SimpleLogin mentions (273)

  • Show HN: An ad free temporary mail service
    Simple Login (SL), Addy (AD), and DuckDuckGo Email Protection (DDG) are the 3 alias email services I use. Both SL and AD can send and receive. DDG only receives. You can disable the sending direction and simply allow the forward service to run. I believe you will be able to handle this technological challenge. SL and AD are free for 10 aliases, but AD also includes PGP in the free tier. DDG allows for unlimited... - Source: Hacker News / about 2 years ago
  • Ask HN: Alternatives to the email masking service Firefox Relay?
    There’s https://simplelogin.io/, which is owned by Proton now, so similar in terms of privacy. You can get it separately, or as part of Proton Pass or Mail. - Source: Hacker News / over 2 years ago
  • Protect your emails (short note)
    I belive the best chioce for todays is https://simplelogin.io/, that is why:. - Source: dev.to / over 2 years ago
  • Stalwart mail server (self-hosted all-in-one mail server) now as an admin webui
    >Email aliases, mailing lists, subaddressing and catch-all addresses support. Another feature that would be nice to have built-in is masked hide-my-email aliases for privacy like the cloaked email services from iCloud, FastMail, SimpleLogin, Cloudflare email routing, etc.[1] For now, I use the typical aliases addresses in Dovecot but it doesn't hide the real email when replying. Also, creating new... - Source: Hacker News / over 2 years ago
  • Everyone Wants Your Email Address. Think Twice Before Sharing It
    Note that other than Mozilla’s Firefox Relay and Apple’s Hide My Email there's also SimpleLogin: https://simplelogin.io/ Also the Bitwarden password manager has an integration for SimpleLogin. - Source: Hacker News / over 2 years ago
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Alterable mentions (0)

We have not tracked any mentions of Alterable yet. Tracking of Alterable recommendations started around Feb 2022.

What are some alternatives?

When comparing SimpleLogin and Alterable, you can also consider the following products

AnonAddy - Create unlimited aliases for free. Protect your email from spam using disposable addresses. Encrypt forwarded emails with PGP encryption using this service.

NiftyImages - NiftyImages is a tool to engage clients with personalized images and countdown timers for email.

Firefox Relay - Keep your email safe from hackers & trackers...

OpenAlternative - Discover Open Source Alternatives to Popular Software

33Mail - Simple free disposable email address service, unlimited free disposable email addresses.

Movable Ink - Agile Email Marketing