Customer.io vs Userlist

Which one do AI engines recommend, and how do they differ on price, fit and features?

The short answer

Customer.io is the stronger AI pick in Email Marketing: it has a visibility score of 6.2 versus 1.2 for Userlist, and ranks ahead in 100% of the answers that name both.

Choose Customer.io if…

You want the brand AI engines rank higher (6.2 vs 1.2)
You need GDPR or CCPA or ISO 27001 or SOC 2 Type II or HIPAA coverage
You prefer a larger, established vendor (201–500 employees)
Strong behavioral and event-driven automation

Choose Userlist if…

Recommended as a top choice on B2B SaaS shortlists

AI visibility side by side

Latest weekly run · Nov 2

Metric	Customer.io	Userlist
Visibility score	6.2%	1.2%
Change vs last week	New	New
Rank in Email Marketing	#16	#32
Share of voice	1.7%	0.4%
Mentions this run	10	2
Positive in AI answers	34%	—

The stronger value in each row is marked with a ✓.

Visibility score trend

Weekly runs over the last 60 days

Customer.io 0pp · Userlist 0pp over 0 weekly runs.

Engine by engine

Customer.io leads on 2 of 3 engines

ChatGPT

1.7%

AI Mode

Perplexity

11.5%

Customer.ioUserlist

Head to head in AI answers

2 engine answers name both brands

2Customer.io ranked higher

0Userlist ranked higher

Prompt	Engine	Customer.io	Userlist
Top email marketing platform options for B2B SaaS companies	ChatGPT	#2	#5
Top email marketing platform options for B2B SaaS companies	Perplexity	#1	#4

Features, pricing & fit

Dimension	Customer.io	Userlist
Pricing model	Usage-based	Usage-based
Entry price	$100 / mo	Contact sales
Free plan	No	No · 14-day trial
Deployment	Cloud-hosted, with US and EU data centers	—
Compliance	GDPR, CCPA, ISO 27001, SOC 2 Type II, HIPAA	—
Support	Email and chat support, Documentation and community support, Dedicated Customer Success Manager on Enterprise	Email support at support@userlist.com, Discovery demo and 60-minute roadmapping session for new accounts, Group training for the team on Professional, Dedicated account manager and monthly review calls on Enterprise
Founded	2012	2017
Headquarters	Portland, Oregon, USA	Atlanta, Georgia, United States
Employees	201–500	1–10
Funding	Series A led by Spectrum Equity	Pre-seed from 21 angel investors
Best for	Teams getting started with data-driven messaging, and teams scaling across channels with custom workflows.	Growing B2B SaaS companies that need to onboard, engage and nurture both customers and marketing leads, especially where accounts have several users.