I use DynECT SMTP however if that fails it will fail over to send grid
pretty much everything
WordPress with HHVM and all the things you can do it that make it the most appealing software for making websites for me.
it makes it very fast
fantastic tool to communicate with clients
I don't like AWS BUT Pagely's VPS-3 makes it work.
I still use FireHost for most things
alerts me to any issues and blends well with other tools for uptime monitoring
this is used with mover in order to sync sites
The server is comprised of Varnish, Nginx & Apache it is SPDY and an excellent product.
Replaced memcache and alleviated lots of issues on the spot absolutely amazing caching, with memory-based storage it's a win-win.
Because it is required although the server is running HHVM every bit of code is PHP friendly it's an awesome synergy.
to replace PHP