Using the IONOS Mail servers, there are restrictions in place primarily as a security precaution against SPAM, among other reasons. Please see below for the applicable limits based on your email product.
|Email Type||Recipients per Email|
|Mail Basic||200 incl. CC and BCC|
|Mail Business||200 incl. CC and BCC|
|Microsoft Exchange 2013||500 incl. CC and BCC (contact groups or mailing lists are considered 1 recipient)|
** The maximum number of different recipients that you can send emails to within a 24-hour time frame for Microsoft Exchange 2013 accounts is 1000. Contact groups or mailing lists are considered 1 recipient.
Microsoft Exchange 2019 Recipient Rate Limits
|Age of Contract||Emails per day|
|> 14 days||20,000|
Before sending, ensure that you have included an unsubscribe link in the communication. This protects your mailings against being flagged as SPAM.