Location and overview of mail client settings can be found below. The server settings being the same regardless of what mail client or device is being set up. Note that port settings may need to be adjusted depending on local network or ISP restrictions.
The mail server for a site can be found at Everleap Control Panel > Sites > Manage (if multi-site) > Email > in the "Email Info" pane as in the image below
Replacing "xx" with the mail server for the site, the connection settings are
incoming mail server: smxx.internetmailserver.net
outgoing mail server: smxx.internetmailserver.net
username: full email address (example: firstname.lastname@example.org)
password: email account password
And SMTP authentication will need to be enabled in the client to send mail.
General Port Information
The port used depends on encryption settings and possible local network restrictions, like port blocks. Note that depending on the device there may be a "STARTTLS" as well as a "SSL / TLS" or "TLS" option. While information is available if you want to read up on the difference, generally speaking you'll want to select TLS over STARTTLS. TLS is also the newer encryption protocol, so it is best to try it before SSL. Though SSL can be used in cases of older clients / devices that do not support TLS 1.2 or port restrictions.
POP TLS: 110
POP SSL: 995
POP (unencrypted): 110
IMAP TLS: 143
IMAP SSL: 993
IMAP (unencrypted): 143
SMTP TLS: 25 or 587
SMTP SSL: 465
SMTP (unencrypted): 25 or 587