Calendly vs Intercom vs Missive vs Slack

Calendly+

Starting price

$10/month

ViewVisit site ↗

Intercom+

Starting price

$29/month

ViewVisit site ↗

Missive+

Starting price

$14/seat/month

ViewVisit site ↗

Slack+

Starting price

$7.25/month

ViewVisit site ↗

Attribute	Calendly	Intercom	Missive	Slack
Category	Events, Scheduling & Booking	Customer Support & Success	Communication	Communication
Pricing	Free tier	Paid	Paid	Free tier
Starting price	$10/month	$29/month	$14/seat/month	✓ $7.25/month
Free tier	✓ Yes	No	No	✓ Yes
Free trial	✓ Yes	✓ Yes (14d)	✓ Yes	✓ Yes
Deployment	Cloud	—	—	—
API available	✓ Yes	✓ Yes	Unknown	✓ Yes
Platforms	ios, android	—	—	—
Certifications	4	5	—	✓ 8
Integrations	✓ 5	4	1	2
Company	Founded 2013	Founded 2011	—	Founded 2009
Feature attributes
Sso Saml	✓ Yes	✓ Yes	— Unknown	✓ Yes
Rbac	— Unknown	— Unknown	— Unknown	✓ Yes
Mobile App	Ios And Android	— Unknown	— Unknown	— Unknown
Webhooks	✓ Yes	✓ Yes	— Unknown	— Unknown
Data Export	— Unknown	— Unknown	— Unknown	✓ Yes
Calendar Integrations	✓ Yes	— Unknown	— Unknown	— Unknown
Group Scheduling	✓ Yes	— Unknown	— Unknown	— Unknown
Payment Collection	✓ Yes	— Unknown	— Unknown	— Unknown
Routing Forms	✓ Yes	— Unknown	— Unknown	— Unknown
Self Hosting	— Unknown	— Unknown	— Unknown	— Unknown
Ticketing	— Unknown	✓ Yes	— Unknown	— Unknown
Live Chat	— Unknown	✓ Yes	— Unknown	— Unknown
Knowledge Base	— Unknown	✓ Yes	— Unknown	— Unknown
Ai Chatbot	— Unknown	✓ Yes	— Unknown	— Unknown
Omnichannel	— Unknown	✓ Yes	— Unknown	— Unknown
Video Conferencing	— Unknown	— Unknown	— Unknown	✓ Yes
Team Messaging	— Unknown	— Unknown	— Unknown	✓ Yes
Max Participants	— Unknown	— Unknown	— Unknown	— Unknown
Screen Sharing	— Unknown	— Unknown	— Unknown	✓ Yes
Guest Access	— Unknown	— Unknown	— Unknown	— Unknown

Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.