We tweaked our pricing today so 100k free and fixed the confusing plans - check it out <a href="https:&#x2F;&#x2F;www.sparkpost.com&#x2F;pricing" rel="nofollow">https:&#x2F;&#x2F;www.sparkpost.com&#x2F;pricing</a>
We have been doing transactional email for 15 years for the likes of Twitter, Pinterest, Zillow smaller developers and startups and are not going anywhere - we are very developer friendly.  Also check out <a href="https:&#x2F;&#x2F;developers.sparkpost.com" rel="nofollow">https:&#x2F;&#x2F;developers.sparkpost.com</a>