SparkPost (now Bird Email)
Still solid transactional email infrastructure under the hood, but the SparkPost brand itself is being phased out in favor of "Bird Email," which makes it a confusing addition to a directory unless clearly labeled as a rebrand.
What it does
SparkPost is transactional and bulk email-sending infrastructure (API and SMTP relay) with deliverability analytics, reputation monitoring, and engagement tracking, historically used by high-volume senders. Following its 2021 acquisition by MessageBird and the company's 2023+ "Bird" rebrand, the product is now marketed as Bird Email, though documentation and support still reference the SparkPost name in places.
Who this helps
You send transactional or bulk email through an API.
You want deliverability analytics.
You monitor sender reputation.
You're a developer or high-volume sender.
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