Alternatives to Customer.io

The top Customer Engagement Platform companies similar to Customer.io, ranked by relevance (named competitors first, then how closely their sectors overlap) and our 0-100 AI-readiness score. Each links to a full profile with funding and team.

Open source alternatives to Customer.io (60) →

Company	Sector	HQ	Funding	Score
Constant Contact	Digital Marketing	Waltham, United States	$37.0M	53
HUHull	Customer Data Platform	Atlanta, United States	$2.6M	46
Weave	Voice AI	Lehi, United States	—	70
Freshworks	AI	San Mateo, United States	$150.0M	62
Catalyst	Customer Success Platform	New York, United States	$281.0M	52
Kayako	Customer Support Software	London, United Kingdom	—	33
HappyFox	CRM	Irvine, United States	—	29
COComm100	Omnichannel Software	Vancouver, Canada	—	28
OneSignal	Customer Engagement Platform	San Mateo, United States	$57.0M	61
Klaviyo	Marketing Automation	—	$372.9M	68
INInsider One	Customer Engagement Platform	Istanbul, Turkey	$773.0M	59
Weezmo	Marketing	Tel Aviv, Israel	$1.0M	42
mapp Mobile	MarTech	Munich, Germany	$2.4M	34
BRBraze	Customer Engagement Platform	New York, United States	$695.1M	72
Postscript	E-commerce	San Francisco, United States	—	64
Fullpath	Automotive	Tel Aviv, Israel	$40.0M	61
MoEngage	MarTech	Bangalore, India	$246.0M	56
iContact	Email Marketing	Morrisville, United States	$45.6M	55
Optimove	Analytics	Tel Aviv, Israel	$97.0M	53
BRBrevo Marketing Platform	MarTech	Paris, France	—	49
Litmus	MarTech	Woburn, United States	$30.0M	48
Coldlabsdeliverability	Email Deliverability	—	—	33
Warmy.io	Email	—	—	30
Exposebox	Marketing	Tel Aviv, Israel	—	30
Tomobox	Marketing	—	—	20
Awonna	Retail	—	—	11
Textivo	SMS Marketing	—	—	—
Getunlayer	Email Marketing	San Francisco, United States	—	—
Emailbench	Email Marketing	—	—	—
ActiveCampaign	Agentic AI	Chicago, United States	$50.0M	75
ZEZeta Global	Marketing Technology	New York City, United States	$855.0M	70
Sprout Social Influencer Marketing	Social Media Management	Chicago, United States	$103.5M	69
Manychat	Chat Marketing	Palo Alto, United States	$150.0M	67
BLBloomreach	E-commerce	Mountain View, United States	$452.0M	66
Unbounce	MarTech	Vancouver, Canada	—	61
FirmPilot	LegalTech	Miami, Malta	$4.7M	60
ITITERABLE	SaaS	San Francisco, United States	$250.1M	58
Sitecore	Digital Experience Platform	San Francisco, United States	$1.2B	56
Jeeng	Marketing	Tel Aviv, Israel	$20.5M	55
Mailjet	Email Marketing	Paris, France	$16.7M	54
PRPrimetag	Influencer Marketing	Lisbon, Portugal	—	54
Anagog	Mobile	London, United Kingdom	$25.0M	54
Levitate	Relationship Marketing	Raleigh, United States	$44.0M	53
ClickDimensions	Marketing	Atlanta, United States	$4.0M	51
CoreMedia	Digital Experience Platform	Hamburg, Germany	$4.7M	49
BOBonobo.ai	Marketing	Tel Aviv, Israel	$4.4M	48
AppCard	Marketing	New York, United States	$8.5M	48
Akool	Generative AI	Palo Alto, United States	$40.0M	47
Datawit	Marketing	—	—	46
WebyClip	Marketing	Tel Aviv, Israel	$4.2M	43
Crisp	Customer Engagement	Paris, France	—	42
Khloud, .	Digital Marketing	Tel Aviv, Israel	—	38
Julai	Marketing	Tel Aviv, Israel	$1.5M	37
Adsmurai	AdTech	Barcelona, Spain	$47.3M	37
SRsrcflare	Marketing	—	—	36
FORTVISION	Marketing	—	—	35
Doctor Mailer	Productivity	—	—	35
UserMaven	MarTech	Lewes, United States	—	33
Campaignz	MarTech	Tel Aviv, Israel	$1.5M	32
ReplyAssist	Sales Automation	—	—	31