1. When I send email from Zoho mailbox I can see this letter only in Zoho. This mail is not shown in my Yandex mailbox.
2. An answer for the letter send from Zoho mail is delivered only to my Yandex mailbox. And it's not shown at Zoho mailbox.
3. So, in Zoho mailbox I have only letters send from Zoho and no answers for them. And the same time I don't see in Zoho any mail from my Yandex mailbox.
How can you improve it?