

To leverage that kind of ROI, you need to invest in a dedicated email marketing service like Brevo. Why You Should Use Email Marketing Software to Send Mass EmailsĮmail marketing remains the most profitable marketing channel with an ROI of $32 for every $1 spent. Unprofessional sender address : Sending mass emails from an address, along with a high number of spam reports, can get your mail server IP address blacklisted when sending through Outlook.Lower sender reputation: Spam reports impact your sender reputation, making it less likely you’ll reach your recipients’ inboxes in the future.Flagged as spam: Mass emails sent from Outlook, Gmail, and Yahoo are often flagged as spam by both ESPs and email recipients.


Unlike dedicated email marketing services, Outlook isn’t designed for sending mass emails. Why You Shouldn’t Send Mass Email in Outlook Easy, right? Now let’s talk about the disadvantages of sending mass email campaigns with Outlook.
