Pingly might be a bit more popular than Insight Employee Engagement. We know about 1 link to it since March 2021 and only 1 link to Insight Employee Engagement. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Check out Inventiv. https://inventiv.io We used it a couple years ago and really liked it—super responsive team and flexible tool. Source: over 2 years ago
If they're hitting the outbound SMTP servers, there's no way (at least that I know of) to protect the IP/servers via obfuscation with a service like Cloudflare etc. Email deliverability relies heavily on the source IP of the sending SMTP for reputation and is going to be viewable in the headers of an email. Also changing IPs isn't a small task unless you're sitting on a load of good reputation IPs that are... - Source: Hacker News / over 2 years ago
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