SparkPost

SparkPost is now part of Bird. It targets enterprise high-volume senders. The signal-and-analytics product is its strongest differentiator. Smaller teams typically find Postmark or Mailgun easier.

Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.

Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, SparkPost covers scheduling, event stream, the suppressions API, and multi-tenant support, and does not cover operating track record. Whether that gap matters depends on how central those are to the build.

• Scheduling: Yes
• Event stream: Yes
• Deliverability: Strong at scale; deliverability dashboard with engagement and inbox-rate signals.
• Operating since: 2014
• Suppressions API: Yes
• Best published rate per 1,000: Tiers not published in comparable form
• Multi-tenant: Yes
• Free tier: No permanent free tier
• Starts at: $30/mo on Starter plan

Strong at scale; deliverability dashboard with engagement and inbox-rate signals.

Enterprise senders pushing millions per month who need analytics depth.