I don't know if it has to do with your maintenance in European data centers, but for the second time in a short time I experience that Zoho does not function as it should. Not via Spark (I'm using MacOS) but also not when I try to send an email via Zoho webmail. Very annoying. I depend on mail for my work. If it turns out to be unreliable, I have a big problem! I would like to hear from you. Thanks.