App comparison
Add up to 4 apps below to see how they compare. You can also use the "Compare" buttons while browsing.
GetApp offers objective, independent research and verified user reviews. We may earn a referral fee when you visit a vendor through our links.
Our commitment
Independent research methodology
Our researchers use a mix of verified reviews, independent research, and objective methodologies to bring you selection and ranking information you can trust. While we may earn a referral fee when you visit a provider through our links or speak to an advisor, this has no influence on our research or methodology.
Verified user reviews
GetApp maintains a proprietary database of millions of in-depth, verified user reviews across thousands of products in hundreds of software categories. Our data scientists apply advanced modeling techniques to identify key insights about products based on those reviews. We may also share aggregated ratings and select excerpts from those reviews throughout our site.
Our human moderators verify that reviewers are real people and that reviews are authentic. They use leading tech to analyze text quality and to detect plagiarism and generative AI.
How GetApp ensures transparency
GetApp lists all providers across its website—not just those that pay us—so that users can make informed purchase decisions. GetApp is free for users. Software providers pay us for sponsored profiles to receive web traffic and sales opportunities. Sponsored profiles include a link-out icon that takes users to the provider’s website.
Email Marketing Software Integrated with Customer.io (2026)
Last updated: April 2026
18 software options
Sponsored
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based CRM solution for salespeople
Read more about Pipedrive
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
AI-Powered, No-Code App Building Platform
Read more about Airtable
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Contact management & social relationship solution
Read more about Nimble
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
AI-powered customer service with helpdesk
Read more about Intercom
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Marketing Email, Transactional Email, Transactional SMS
Read more about Mailjet
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Live chat & in-app messaging for sales & marketing
Read more about Drift
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based content marketing platform
Read more about Kajabi
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Transactional email API service for developers
Read more about Mailgun
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Maximize Engagement. Minimize churn.
Read more about OneSignal
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Website builder, community platform, and online courses
Read more about Podia
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Turn relationships into results
Read more about Contactually
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email marketing, testing & tracking solution
Read more about Litmus
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email list growth platform for marketers
Read more about Privy
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Real time email verification and email list cleaning service
Read more about NeverBounce
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email marketing software with templates and AMP emails
Read more about Mailmodo
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Email creation and collaboration management platform
Read more about Knak
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Customizable web forms that integrate with your stack
Read more about Digioh
Based on GetApp‘s extensive, proprietary database of in-depth, verified user reviews
Cloud-based email marketing software
Read more about NiftyImages