Microsoft will limit Exchange Online bulk emails to fight spam
Microsoft has announced plans to fight spam by imposing a daily Exchange Online bulk email limit of 2,000 external recipients starting January 2025.
New Email Rules 2024: Marketers, Authenticate or Get Trashed
Email authentication is now mandatory in 2024. To avoid emails going to spam or being blocked, marketers must urgently comply with new identity verification requirements from Google and Yahoo by authenticating their email sending infrastructure.