Polymail might be a bit more popular than VirusTotal. We know about 1 link to it since March 2021 and only 1 link to VirusTotal. 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.
On a side note Virus Total is a good site to check before you click/download something. Source: almost 2 years ago
Polymail - This one is a lot like Twobird but with a lot more features. It's a different type of email client. It's really cool, but the Windows version is just a web app. It's available on iOS as well. Source: over 2 years ago
Cuckoo Sandbox - Cuckoo Sandbox provides detailed analysis of any suspected malware to help protect you from online threats.
Airmail - Airmail is a lightweight and lightning fast mail client for Mac.
Any.Run - Interactive malware hunting service. Any environments ready for live testing most type of threats.
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
Metadefender - Metadefender, by OPSWAT, allows you to quickly multi-scan your files for malware using 43 antivirus...
Thunderbird - Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!