Email subscribers can send email through the portal or through 3rd party mail clients like Microsoft Outlook, Apple Mail or Mozilla Thunderbird. The following are the outgoing email limitations per user. These limitations prevent spammers from 'hogging' mail server resources and bandwidth.
Your email service is not a mass-mailing tool - the mail system is not designed to manage massive bouncebacks and list subscriptions. To send bulk marketing email to a mailing list, please consider using a service like iContact, Streamsend or Mail Chimp for mass mailings.
PORTAL SENDING LIMITS
200 Recipients per message (To:, CC:)
BCC: 50 Recipients
50MB File Attachment Limit *Receiving servers may reject attachments over a certain size (e.g. 20MB)
SMTP SENDING LIMITS*
100 Recipients per message (To:, CC:, BCC:)
100 Messages per Hour
20MB File Attachment Limit