tl;dr: don't use sendgrid.
no it wasn't. i have 100s of messages stuck in my queue marked as 'deferred'. these are critical emails that affect us financially. and the response is to "wait a few days". laughable.
even without this process, lots of messages get stuck for 10 minutes or more with no response from their support department as to why. And this is a PAID service.
over to AWS i go. i don't need complex reporting or elegant UI. just send the bloody email.
If your email reliability is affecting you financially maybe you should pay for a pro account?
I would NEVER use a "free" service for e-mail if I depended on it for $
This is a lesson well learned for you.
i am paying sendgrid. i'm not using the "free" service either. Pro is 8x the cost i'm paying now. mandrill was the same price and actually delivered email. go figure. and i'm equally pissed at the horrible level of customer service as i am at the quality of the actual service.
If you're sending financially critical email, you probably shouldn't be using the $10/month tier of an online service. Email is complicated, I feel like most of these types of services explain the tradeoffs of each price point fairly well.
sorry, but i've used all sorts of services from free to paid. this has been the worst experience of all of them. mandrill was best. i'm pissed at the crappy customer service as much as i am about them deferring email (i understand the complexities) and we cant afford $1000 per year on email.