Created new broadcast and send immediately to all subscribers in a newsletter group.
Created 4 subscribers to a newsletter then broadcast an email to the subscriber group.
My issue, 1st time broadcast, 3 got email, 1 nothing.
2nd time, only 1 receive the email. Other 3 nothing.
Repeat the same process a couple of times and got inconsistent results.
Is this issue related to the plugin. Anyone got any suggestion ?
The value of column wpr_queue.sent = ‘1’ for all records.
1. You may have touched teh hourly sending limit of your server
2. The e-mail may have been blacklisted as spam by a spam filter.
3. Improper e-mail server configuration.
4. Network problems
and many many more reasons.
If the wpr_queue.sent value is set to 1 and you received at least one e-mail from that particular delivery queue, then I believe the plug-in has done whatever can be done in its power. After that it is up to the local mail server and the network after that to deliver it. IMHO, there is no 100% delivery guarantee with e-mail.