Facebook audiences, Wordpress, form values

'Why is this message in Spam? We've found that lots of messages from mailer.effifinance.com are spam'

Do you have any suggestions on how I can get my messaging out of people's SPAM folders for future campaigns?

For reference, since we started using Act-On (about 3 months ago), we've received approximately 7 spam complaints and 25 unique opt-outs.

Any help, advice, etc. would be much appreciated.

Thank you all! And welcome to the new community :D

Jaime