The solution is stable and robust. There are no bugs or glitches. It doesn't crash or freeze. 

I'd rate the stability a ten out of ten.

We haven't sent a lot of emails since the two projects were not so big in terms of the quantity of clients and the quantity of messages. However, I've noted they send tons of emails daily. In order to have some problem with the performance, you would have to be playing with millions of customers, and maybe, in that case you need to coordinate with the technical team of SendGrid. However, we are not that big and haven't had any issues with stability at all.

The solution is stable. I haven't encountered any downtime. Most of the time, the emails are sent properly, and then I can also see the email deliverability, and I can see the status of each email.

The solution is 100% stable. There are no bugs or glitches. It doesn't crash or freeze. It's very reliable, and the performance is good. 

It's very stable. It's rare that I would see an email fail, for example. It's very reliable, and the performance is excellent. 

I've never faced any issues. We are good there. 

SendGrid is a stable product; once deployed, you don't have to look at it again.

It is a stable solution. 

No. Never had a connection problem with SendGrid API or Web.

No issues encountered.