Magento 1.9.1 Sendgrid free version
We use the Sendgrid free version to send out the Confirmation Emails to customers...it worked great but now it seems many people get the Confirmation Email in their SPAM folder. I checked with the hosting company and we are not blacklisted anywhere. What can we do to change this?
Shall we change the FROM Email address? (It comes from sales@.... now) or the Subject line? Would upgrading Sendgrid to the paid version help?