
Deputy
Sling
ResourceGuru
Float
Bizimply
Findmyshift
Shiftee
When I Work is an employee scheduling and communication app using the web, mobile apps, text messaging, social media, and email.

Mailgun
Resend
Twilio
Mailjet
Brevo
Amazon SES
MailChimp
Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Which is more popular?
Based on our record, Postmark should be more popular than When I Work. It has been mentioned 57 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | wheniwork.com | postmarkapp.com |
| Pricing | ||
| Company | — | Startup from the United States |
| Listed in |
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
When I Work is recommended for small to medium-sized businesses looking for an efficient and intuitive platform to manage employee schedules, track time, and facilitate communication between team members. It is particularly useful for industries such as retail, healthcare, hospitality, and restaurant services where shift work is common.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Digital Unboxing: When I Work
More videos
Using Postmark to send email from Darkroom Booth
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using When I Work and Postmark. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


Whether you’ve grown tired of When I Work or are looking to change things up and see if there’s an app that’s better out there – then this article is for you. In just a moment, we will walk you through nine different...
Postmark are the most expensive transactional email service (10x the cost of Amazon SES), so what do they do to justify the sky high pricing? Their focus seems to be on providing a high-end service using only the best...
Recommendations tracked on public social media and blogs since March 2021.


How are the users accessing these calendars if you don't create accounts for them? What you probably want is a work scheduling service like when I work: https://wheniwork.com. Source: over 3 years ago
You could try something like this: https://wheniwork.com. Source: about 4 years ago
I record all of our takings through a spreadsheet and from this I add our takings into wheniwork.com and get my labour as a percentage of sales. Source: about 5 years ago
Postmark has been doing exactly one thing since 2010: transactional email, done carefully. It enforces a hard separation between transactional and bulk/marketing sending streams (you can't mix them on the same account), which is exactly... - Source: dev.to / 4 days ago
We want to shout out Postmark for sponsoring this challenge. Postmark's developer-focused API and reliable inbound email parsing made these innovative projects possible, allowing the community to focus on creativity rather than email... - Source: dev.to / about 1 year ago
PurifyPDF is a privacy-first PDF sanitization workflow built using n8n, Postmark, PDF.co, and Airtable. - Source: dev.to / over 1 year ago
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A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.
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Sling is a free shift scheduling and communication software. It is built around four main features - shifts, messages, newsfeed and tasks, making it possible for managers to organize all aspects of their work on a single platform.
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Resource management software that helps teams schedule with clarity, plan with flexibility, and deliver projects with confidence.
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Brings voice and messaging to your web and mobile applications.
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