Email Limitations – Sparklight Support
support.sparklight.com › hc › en-us35 messages per hour (to non Sparklight email addresses) using an email client; 35 messages per hour using our website; Storage Limits. The total mailbox storage for each email address is 20 GB. This includes the Inbox and all subfolders. The maximum attachment size per email is 20 MB. The maximum number of email contacts is in an address book is 10,000.
Maximum Email Size Limits You Should Follow
https://mailtrap.io/blog/email-size24.08.2019 · limit to send a message (your email system) limit to retrieve a message (your recipients’ mail system). For example, if your email service is able to send messages up to 15 MB but the email recipient can retrieve messages only up to 10 MB, it’s obvious that your email should not exceed 10MB. Otherwise, the email will be rejected.