Note, if your store is on the solomono.net subdomain, email sending might not work perfectly. The best option is to connect your own domain. Connecting your own domain is available on all rental packages, including the Free package.
About how to connect your own domain, you can read here - https://solomono.net/domain-connection-instructions-a-526.html
About what changes need to be made to your domain's DNS settings after connecting, so that email sending starts working, you can read at this link - https://solomono.net/is-sending-emails-not-working-after-domain-connection-dmarc-dkim-spf--a-642.html
Additionally, we provide promo codes for certain domains, more about this at these links: