A: Hi,

It's Alex, the founder of ProxiedMail.

You have unlimited proxy emails, but limited real addresses.
Limit of real addresses is only for cases when people are trying to send spam through ProxiedMail. Real limit is actually double higher for Appsumo users.
Proxy email is like: test@pxdmail.com or test@mydomain.com while the real address is something like johny@gmail.com
1. Domains are unlimited.
2. Sure. When you're sending the email please make sure you're sending from the right address like Stingray@pxdmail.com or hello@mydomain.com
Email providers kinda likes us since we're not doing bad things and preventing spam, so make sure everything good on your end too.
Sometimes it happens, but unfo there is no pill to threat all potential false-positive cases.
3. No limit for domains, no limit for proxy emails, limit for real addresses can be increased, but idk why you would need that. Anyway, feel free to reach me out.
4. In your spam - no way. In spam of your recipients - let's say not very likely, but possible.
Since the beginning or After you use ProxiedMail for some time it won't land in spam anymore.

Thank you.
Let me know if you want to clarify anything else.