Sponsor comparison
Customer.io vs Apollo
Newsletter sponsorship activity, audience reach, and ad formats — side by side.
Sponsorship breakdown
Technology
Health & Fitness
MKT1 Newsletter with Emily Kramer
54K subscribers
The Hustle
1000K subscribers
54K subs
1000K subs
used by Notion, Segment, and Clearbit to message and engage with customers acros…
May 2025
November 2020
Ad copy examples
Customer.io
used by Notion, Segment, and Clearbit to message and engage with customers across email, push, in-app, SMS, Slack, and WhatsApp. It’s easy to plug in your data and trigger campaigns based on just about anything: profiled attributes, events, actions—you name it.
Apollo
No ad copy available
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