Nylas domain certificates
Most of Nylas domains are compliant with Let's Encrypt's chain of trust. Some devices might receive errors if they access the Nylas domains. This is because they can't access websites secured by Let's Encrypt certificates.
The following are the Nylas domains that use the Let's Encrypt certificates:
nyl.asnylas.comnylas.teamus.nylas.com
For information on the Let's Encrypt certificates and workarounds, see the Let's Encrypt's official documentation. You can review a list of devices that support the new certificate at Let's Encrypt's Certificate Compatibility page.