Your pricing is high for this service. Exceptionally high, given the limits and no sending ability. I'd suggest taking a good look at competitive services.
Well, if I was shopping around, I might notice that an account at MXRoute costs less than half of your Pro plan, with fewer limits. And that's a full mail service, with mailboxes/POP/IMAP/SMTP etc, but it could also certainly be used simply as a forwarding service for custom domains. And they have many years in business, high credibility (well, higher than a brand new service). That's just one alternative.
Obviously if you have limited needs, just 1 or 2 domains, and can get by on the $1 plan, that is price competitive even with free services (like many domain registrars offering free mail forwarding). But the jump to $10 month is far too much, IMO.
