Need help with Drupal bulk mail low open rate for legitimate mailing list
- by Ron Williams
I've moved from constant contact to Drupal Simplenews/Mimemail/SMTP. Previously the open rate was around 50% for constant contact, but now it's 4-5% for the same list via the mentioned setup. Mail is getting out from the server, but it's having an issue anyway.
Here's the setup:
-The e-mail list consists of approximately 80,000 addresses which is queued at 10,000 e-mails per cron run (which runs hourly).
-The server is a Dual Core2Quad machine with 2GB of RAM.
-When mail is being sent, the mail queue will usually go up to ~1000 at the beginning of the hour before reducing to ~250 by the time the next cron occurs.
-Newsletter is themed to display custom style for newsletter on send
-Newsletter is received by some, but appears to be bounced by many (based on low open rate_
-I've added SPF, domain keys, and a PTR record to the DNS
-Server hostname (listed in ptr) is different from hosted domain
-Very low spam number via Spamassassin
-IP and domain are not blacklisted
-Mail goes out via SMTP module on delivery.
Any ideas?