Email mistakenly marked as spam [closed]
I recommend the MXToolBox SuperTool:
-
To check if your IP is on any blacklist, enter the command:
blacklist:IP -
To check if your IP has a reverse DNS record, enter the command:
ptr:IP -
To check if your IP has a forward-confirmed reverse DNS, enter the command:
a:hostnamewhere hostname if the result of the second check. It should return your IP.
Other things you can try to pass common spam filters (like Google's):
Set up a SPF record.
Sign your emails with the DKIM method.
Request your IP to be whitelisted (e. g., on dnswl.org).