Mail systems evaluate sender reputation scores before placing emails in the “Inbox” of a recipient. Use the following guidelines while sending bulk emails:
Use an email address that contains your own domain name for your bulk campaigns (e.g. 123@example.com, where “example.com” is your domain address). We also recommend sending business and marketing emails with different domains to avoid potential spam complaints that may affect your business correspondence. Using free mail services may increase your chance of ending up in a recipient's SPAM box, so we do not recommend using Gmail, Yahoo.com, and Hotmail.com for your bulk email campaigns.
Verify your sender’s domain on a DNS server to increase email deliverability and prevent any unauthorized mailings on your behalf. The verification process is covered in the Email domain verification Academy article.
Check your rating on sender reputation score services like https://www.senderscore.org/. Please note that IP addresses with reputation scores below 70% get aggressively filtered.
Please, let us know in case any further information is required.
