Limits on Sending Messages
iCloud has several safeguards to ensure that only iCloud members can send messages using the iCloud outgoing mail server. Among these safeguards are reasonable limitations on:
- The total number of messages you can send each day (200 messages)
- The number of recipients to whom you can send each day (1000 recipients)
- The maximum number of recipients per message (100 recipients)
- The size of incoming and outgoing messages (20 MB)
iCloud email has been designed primarily for personal use. Sending unsolicited bulk email messages through iCloud email servers is prohibited.