SMTP and Sending Limits for Cablevision Email

EQ Admin

EQ Forum Admin
Staff member
Cablevision / Optimum does NOT allow customers to send emails using an email client program or SMTP mail server, unless the customer subscribed to "Optimum Online Boost" or "Optimum Online for Business".
  • Cablevision/Optimum (OOL) email send limit - maximum 50 recipients at one time

  • Cablevision other SMTP limits - max 20mb per outgoing message

  • Cablevision SMTP restriction expiry method - N/A.