I'm starting this thread as a follow-on from this one.
I have just lost a booking for two gites for two weeks because my reply went into the enquirers spam folder - However, the customer was kind enough to let me know.gam wrote: A worry for many businesses.
You probably already know this but I thought it worth a mention. Delivery into the intended inbox rather than disappearing into a spam bucket may be improved by using SPF (sender policy framework) functionality often offered by your web host in their email system but, in my experience, rarely used - probably because it's not widely known about.
If it's not something you know about or use then it might be worth checking whether your host offers SPF and domain keys*. If they do then chances are that they are turned off as they usually need a bit of configuration.
I have checked my email settings for authentication and my Yahoo Small business account requires SSL/TLS authentication - Is this enough (evidently not!)
What can I do to prevent this problem reoccuring?