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SendGrid and AppsFlyer are actually very different products, so the choice usually depends on the problem you’re solving.
For an iOS app:
SendGrid is mainly used for:
transactional emails
verification emails
password reset emails
email delivery infrastructure
marketing emails
AppsFlyer is mainly used for:
mobile attribution
install tracking
ad campaign analytics
SKAdNetwork support
measuring user acquisition ROI
So normally it’s not:
“SendGrid vs AppsFlyer”
It’s more:
“Email infrastructure vs mobile attribution platform”
A company might choose SendGrid if their immediate need is:
reliable email delivery
lower infrastructure complexity
developer-friendly APIs
onboarding/authentication emails
A company would choose AppsFlyer if they need:
ad attribution
tracking paid installs
measuring Facebook/TikTok/Google campaign performance
mobile growth analytics
For AI/SaaS startups specifically, many early-stage teams prioritize:
product onboarding
auth flows
transactional communication
before investing heavily in paid mobile acquisition analytics, which could explain prioritizing SendGrid first.
Also, AppsFlyer can become relatively expensive and operationally heavier once attribution scales, while SendGrid is usually simpler to adopt early on.
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SendGrid is the email platform businesses trust to deliver transactional and marketing email at scale. We chose it because deliverability matters, and SendGrid's infrastructure means your emails actually reach the inbox instead of disappearing into the void.
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