I have been warned that sending too many emails too quickly can trigger an internet email blacklist/spam filter.
I have a list of approximately 5,000 customers that I want to send a newsletter to.
I am sending 5,000 people the exact same message, it would undoubtedly look like spam in my opinion no matter what way you look at it.
I was thinking about sending 1 per second and getting it all over and done within 2 hours - but then my web host suggested I break it up into two chunks of 2,500 and place a few hours in between each batch.
How would doing that make it look any less like "spam" to these dreaded email blacklists?
Are there any other good tips for helping the messages get through without ruining my online reputation? (ip address/domain name apparently can be blacklisted?)
I do have the first and last names of everybody I will be sending the emails too so that personalization should help I would assume?