Software Alternatives & Startups

ADDCAL VS StackMail

Compare ADDCAL VS StackMail and see what are their differences

ADDCAL

Add-to-calendar links, RSVPs and subscription calendars for events

Rating
0 reviews
Pricing
Freemium $12 / Monthly (Premium Plan)
StackMail

Stackmail is a webmail service whereby you can log in to your emails from any browser at any time!

Rating
0 reviews
Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Productivity popularity
100% vs 0%
alternatives listed
81 vs 1

Base details

Website, pricing, platforms and company facts side by side.

ADDCAL
StackMail
Website addcal.co stackmail.com
Pricing
Freemium $12 / Monthly (Premium Plan) Official pricing
—
Company Startup from Australia · 1 - 9 employees · 2025 —
Listed in

About ADDCAL and StackMail

In their own words, as submitted to SaaSHub.

ADDCAL
StackMail

AddCal is an event-sharing platform for getting events into attendees' calendars. Create a single add-to-calendar link or button that works with Google Calendar, Apple Calendar, Outlook, Office 365 and Yahoo. Key features Add-to-calendar links & buttons – one universal link per event, with...

Read more about ADDCAL

No description of StackMail yet.

Features and specs

What each product offers, as listed by its team.

ADDCAL 8 features
StackMail 5 features
  • Add-to-Calendar Links
    One universal link or button per event that works with Google, Apple, Outlook, Office 365 and Yahoo calendars
  • Subscription Calendars
    Live calendar feeds that automatically update subscribers when events change or are cancelled
  • RSVP Management
    Going/maybe/not going responses, custom questions, capacity limits with waitlists and CSV export
  • Smart Links
    Generate calendar events dynamically from URL parameters, webhooks or Zapier
  • Event Analytics
    Track clicks and calendar adds per link, broken down by calendar provider
  • Integrations
    Zapier, Zoom and an MCP server for AI assistants
  • Public Event Pages & Embeds
    Shareable public calendar pages and embeddable widgets for websites
  • Custom Domains & Branding
    Serve links from your own domain and remove AddCal branding
  • Privacy-Focused
    StackMail emphasizes data privacy and security, offering encrypted email services without scanning user data for advertising purposes, appealing to privacy-conscious businesses.
  • Business-Oriented Features
    Designed specifically for businesses, it includes features like custom domain email, collaborative tools, calendars, and contact management tailored for professional use.
  • Competitive Pricing
    StackMail offers competitively priced plans compared to some larger email providers, making it accessible for small to medium-sized businesses.
  • No Ads
    Unlike some free email services, StackMail does not display ads to users, providing a cleaner and more professional email experience.
  • Custom Domain Support
    Users can easily set up email addresses with their own custom domain names, enhancing brand professionalism and consistency.

Possible disadvantages

  • Limited Brand Recognition
    As a newer or lesser-known provider compared to Google Workspace or Microsoft 365, StackMail may lack the trust and reputation that larger providers have established.
  • Fewer Third-Party Integrations
    Compared to major email service providers, StackMail may offer fewer integrations with third-party apps and services, limiting its versatility for some businesses.
  • Limited Advanced Features
    It may not offer the same breadth of advanced productivity and collaboration tools that come bundled with larger platforms like Microsoft 365 or Google Workspace.
  • Smaller User Community
    Due to a smaller user base, there may be fewer community resources, third-party tutorials, or troubleshooting forums available online.
  • Uncertain Long-Term Support
    As a smaller company, there might be concerns regarding the long-term viability, updates, and continued support of the service compared to more established providers.

Analysis

An editorial look at what each product does well and who it suits.

ADDCAL
StackMail

No analysis of ADDCAL yet.

Overall verdict

  • StackMail is a solid choice for individuals and businesses seeking a secure, ad-free, privacy-focused email hosting solution with reliable features at a competitive price point.

Why this product is good

  • Ad-free email experience with no data mining or tracking of user content
  • Custom domain email hosting suitable for professional and business use
  • Competitive pricing compared to major enterprise email providers
  • Includes essential productivity tools like calendar, contacts, and webmail access
  • Strong emphasis on privacy and security in data handling
  • Straightforward setup process for custom domains

Recommended for

  • Small to medium-sized businesses wanting professional email addresses
  • Privacy-conscious individuals and organizations
  • Startups looking for cost-effective email hosting
  • Users seeking an alternative to Google Workspace or Microsoft 365
  • Freelancers and entrepreneurs needing custom domain email

Category popularity

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

Score bands 0–20 21–40 41–50 51–60 61–100
ADDCAL
StackMail
100% 100%
0% 0%
0% 0%
100% 100%
100% 100%
0% 0%
0% 0%
100% 100%

Questions & Answers

As answered by people managing ADDCAL and StackMail.

Which are the primary technologies used for building your product?

ADDCAL's answer

Laravel on Laravel Vapor (AWS Lambda), a Vue.js front end, Cloudflare, PostgreSQL on PlanetScale, and Stripe for billing.

What makes your product unique?

ADDCAL's answer

AddCal combines add-to-calendar links, live subscription calendars and RSVPs in one tool, so organisers don't need separate products for each. One link works across Google, Apple, Outlook, Office 365 and Yahoo. Subscription calendars push updates and cancellations to subscribers automatically. Smart Links let developers generate events on the fly from URL parameters, webhooks or Zapier. There's also an MCP server, so AI assistants can create and manage events directly.

Why should a person choose your product over its competitors?

ADDCAL's answer

The free plan includes unlimited calendar adds and subscription calendars, and paid plans are simple monthly or annual tiers with no per-event fees. Every link comes with analytics. Moving from AddEvent takes one click. AddCal is independently built and run, so support comes straight from the people who build the product.

How would you describe the primary audience of your product?

ADDCAL's answer

Anyone who needs people to actually save and attend their events: webinar and SaaS marketers, schools and school districts, universities, local councils, sports clubs, community and faith groups, and event organisers. It's also for developers who add calendar links to apps, emails and booking flows.

Who are some of the biggest customers of your product?

ADDCAL's answer

  • MIT
  • Accenture
  • Deloitte
  • ServiceNow
  • Workday
  • Snowflake
  • Merck

What's the story behind your product?

ADDCAL's answer

In 2020, a webinar invite that worked in Gmail broke in Outlook, and half the attendees couldn't add the event to their calendars. That frustration led to Calndr.link, a weekend hack that offered one add-to-calendar link that worked in every calendar app. Organisers wanted more, so Calndr.link grew into AddCal, which added RSVPs, subscription calendars, embeddable widgets, automation and analytics. Every Calndr.link URL still works. Today AddCal is used by more than 15,000 people and teams in over 120 countries, with more than 25 million calendar adds.

User comments

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