When should you choose Sequenzy?
Sequenzy is the better choice for SaaS companies that need more than email infrastructure:
SaaS founders who need marketing automation + transactional unified
Small-to-medium teams who want ready-to-use features without enterprise setup
Stripe users who want automated emails based on billing events
Non-developers who need visual email builders, not HTML templates
Companies under 500k emails/month who don't need enterprise scale
When should you stick with SparkPost?
SparkPost is the better choice for enterprise email infrastructure:
High-volume senders sending millions of emails monthly
Enterprises needing advanced deliverability tools and predictive analytics
Multi-tenant platforms that need subaccounts for clients
Companies requiring IP warmup automation for new sending domains
Teams with dedicated email operations who can manage infrastructure
Honest Limitations of Sequenzy
Not built for enterprise-scale sending (millions per month)
No predictive analytics or AI-powered deliverability insights
No Email Health Score for real-time reputation monitoring
No automated IP warmup tools
Basic multi-tenant compared to SparkPost's subaccounts
Newer platform with less scale testing
Honest Limitations of SparkPost
No marketing automation—purely transactional infrastructure
No visual email builder (HTML templates only)
No campaign management or broadcast features
No subscriber segmentation for marketing
Enterprise pricing can be expensive for small teams
Owned by MessageBird—ongoing platform changes