Software Alternatives, Accelerators & Startups

iRedMail VS Cal.com

Compare iRedMail VS Cal.com and see what are their differences

iRedMail logo iRedMail

A fully fledged, free email server solution, an open source project (GPL v2).

Cal.com logo Cal.com

Cal.com (formerly Calendso) is the open source Calendly alternative.
  • iRedMail Landing page
    Landing page //
    2022-10-18
  • Cal.com Landing page
    Landing page //
    2023-10-08

iRedMail videos

Part 1: iRedMail

More videos:

  • Tutorial - Complete Email Server iRedMail Installation Tutorial

Cal.com videos

What can you do with Cal? | Cal.com Version 1.1 Launch | 10 new languages

More videos:

  • Review - Cal.com Version 1.0 Launch Event

Category Popularity

0-100% (relative to iRedMail and Cal.com)
Email
100 100%
0% 0
Productivity
0 0%
100% 100
SMTP Server
100 100%
0% 0
Appointments and Scheduling

User comments

Share your experience with using iRedMail and Cal.com. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare iRedMail and Cal.com

iRedMail Reviews

10 Microsoft Exchange Server Alternatives
iRedMail is a free email server solution that is a fully-fledged and open source project. This platform can use the official binary package from the distributions of Linux/BSD, having the support of both i386 and x86/64. It is easy to use with a fast deployment process in almost less than one minute. iRedMail allows the user to work on both virtualized and non-virtualized...
15 Best iRedMail Alternatives 2021
You might want a service that offers better security and protections, more features, or faster processes than what iRedMail provides. Hence, it’s important to consider other options out there that can competently replace iRedMail.
The BEST Email Hosting Providers for Small Business in 2021
There are three products offered by iRedmail. The first one is the iRedMail downloadable installer. To start with iRedMail you need to download the installer package, and after installation, you need to set up DNS records for your iRedMail server. After you have done these two steps, you will need to upgrade with additional installations. The second one is iRedMail Easy....
15 Best Email Hosting for Small Business (2019)
iRedMail is an open source mail server since 2007. It works on most Linux/BSD distributions. It offer paid version ($499/year) with professional support.

Cal.com Reviews

I've poked around a while ago at some Calendly alternatives (specifically was lo... | Hacker News
I tried using https://cal.com for a bit but ended up just switching over to https://zcal.co and it has been great so far. All these other scheduling tools end up trying to do too much and always seem to end up a bit clunky and charge absurd amounts for it

Social recommendations and mentions

Based on our record, Cal.com seems to be a lot more popular than iRedMail. While we know about 53 links to Cal.com, we've tracked only 3 mentions of iRedMail. 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.

iRedMail mentions (3)

  • Ask HN: Custom domain for personal email – yay or nay?
    Yay! I use the free version of iRedMail [0] under OpenBSD since 2017 and every email I send gets through with any issues (except the first days when I screwed up my SPF/DKIM configuration). [0] https://iredmail.org/. - Source: Hacker News / 17 days ago
  • Selfhosted backup solution for iCloud Backup
    For photo I use Immich. For contact and calendar I use my own mail server (iRedMail). For Cloud I have my own nextcloud server. With nextcloud you can sync contact and calendar of uou don't have a mail server likes iRedMail. Source: 12 months ago
  • I am highly excited and overjoyed to share this post.
    I used to spend all my time maintaining e-mail quirks for my server. Adjust this, updated that, fix this breakage, yada yada. But then I decided to setup iRedMail which uses postfix, dovecot, certbot, roundcube, spamassasin, mariadb, ldap and all the bells and whistles. All I have to do now is make sure I don’t break it doing any software upgrades on freebsd. 10/10 scores after configuring and blacklist free. Source: about 2 years ago

Cal.com mentions (53)

  • Start your own (side) business with open-source in mind
    Cal.com is an open-source event-juggling scheduler for everyone, and is free for individuals. - Source: dev.to / 4 months ago
  • Fellow HSP entrepreneurs, how do you manage your energy and stress?
    I force clients who want to talk to me to book a call. I use cal.com (free) and my Google Calendar (which its linked to) only allows calls on specific days/times. I have a few "Call Blocks" where they can book. That let's me do calls in a small section of my week, with ample downtime to recover the rest of the week. I'm still learning how many calls a day I can handle. Currently anything more than 2 is too much. Source: 6 months ago
  • 🔥🔥 Our awesome OSS friends 😍
    Cal.com- Cal.com is a scheduling tool that helps you schedule meetings without the back-and-forth emails. - Source: dev.to / 7 months ago
  • Cal.com Selfhost Issue: Deploying cal.com on selfhost environment gives prisma is not defined issue.
    Has any one deployed cal.com with selfhosted environment. Is yes how would have configured prisma for the same. Source: 8 months ago
  • Open Source, EVERYTHING??
    Recently I came across a company called cal.com, it's a Calendly alternative, but the catch is the entire software is open source: https://github.com/calcom/cal.com. Source: 9 months ago
View more

What are some alternatives?

When comparing iRedMail and Cal.com, you can also consider the following products

Zimbra - Zimbra is trusted by over 500 million users to increase productivity with a complete set of collaboration tools while maintaining total control over security and privacy.

TidyCal - Optimize your schedule with custom booking pages and calendar integrations

mailcow - An open source mailserver suite.

SavvyCal - A scheduling tool both the sender and the recipient will love.

Roundcube - Web-based IMAP email client

Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.