Create your own mail server on cloud just like Gmail.
Host mail for multiple users and multiple domain names.
Synchronize contacts & calendar using Exchange/ActiveSync
You server will be automatically configured to follow modern mail protocols (DMARC, DKIM, and SPF) and the best security practices which includes HSTS, strong ciphers, opportunistic TLS, DNSSEC (with DANE TLSA). These configuration will ensure your newsletters never get flagged.
You will also be able to create website on main domain as mail server will be installed on subdomain.
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