Sending emails to multiple addresses at one domain

[PeteS2024]

Hello. I have sent an email to 3 different domains. There were 20-30 unique email addresses for each domain. For example: mary@domain1.com, bob @domain1.com, ted@domain1.com, etc. When checking the reports many emails were opened from domain1.com, but zero opens from domain2.com and domain3.com. Does constant contact limit the number of emails sent to a single domain at one time or do you think the domain itself rejected the emails? Any info would be appreciated

[William_A]

Hello @PeteS2024 ,

This would indicate something on the receiving side. Here are some general best practices for deliverability. Deliverability can have a lot of variables, from elements on our side, on your side, on the recipient's side, and in their email system company's side. It's also a generally good idea to set up self-authentication since you're sending using an address with your own, unique domain. With all the delivery gatekeeping and anti-spam/malware safeguards in place, it's necessary for businesses using an ESP to have this in place.

If you'd like to learn more about safelisting, and what it entails:

• Safelisting domains in a security system
• Safelisting email addresses in an email client or security system

If you're wanting more in-depth, specialized insight on your current deliverability, it'd be worth speaking with one of our Deliverability agents.