Hi,
yes restriction are not the best.
However the tested services (E4ward, Spamex) asking both for money and have
E4ward.com: Non working Read More site, Dokumentation on version 1.0 and Copyright from 2012
Spamex.com: News site last reply from 2003 and advertising on main page from 2015.
So honestly im not sure if here is everything up to date beside the payment site.
Within 33mail you have forwarded / spam / blocked counter but no number of limiting recieving mails.
An what i will pobably use in future is my own domain because i also figured out some sites who not accepting SG domains.
BUT this is only the option if SG really shut down what I will not hope.
I would much more like to spend my money here.
Regards
Duck