1) It is not allowed to connect to the mailbox more than 50 times per hour (it is recommended to poll the mailbox no more than every 5 minutes), in order to avoid blocking the mailbox.
2) The maximum size of incoming and outgoing messages is 50 MB.
3) It is not allowed to send more than 400 emails per hour from the hosting service.
In the event of a spam mailing being detected or server overload caused by the mailing, the shared hosting account may be suspended with notification to the service owner.
In case of exceeding the limit when sending emails, you will receive an error: Domain domain.tld has exceeded the max emails per hour allowed. message discarded.
You will be able to resume sending an hour after the last access to the mail account.
4) It is not possible to forward an email with a file attachment with extensions: .ade .adp .bas .bat .chm .cmd .com .cpl .crt .eml .exe .hlp .hta .inf .ins .isp .js .jse .lnk . mdb .mde .msc .msi .msp .mst .pcd .pif .reg .scr .sct .shs .url .vbs .vbe .wsf .wsh .wsc
5) Outgoing connections via SMTP ports (25, 465, 587) to third-party mail servers are prohibited. To send letters, you can use sendmail or mailboxes created as part of your hosting service.
6) Incoming mail from non-existent sender addresses is not accepted. If the sender's address does not exist on the mail server serving his domain, the message will be rejected with an error: Sender verify failed.
