Exchange user? cPanel? Postfix? Sendmail? No matter what mail server you're running, or even if you're using a hosted mail solution, Heluna can work for you. A quick two-minute change to your domain's DNS MX records, and Heluna will start filtering messages for you, and only delivering the "clean" messages to your mail server.
Messages destined for your domain wind up being delivered to the Heluna servers, where we analyze and filter out spam messages. That leaves only the clean messages for your users, which we then deliver directly to your mail server.
For extra security, you can make sure that email connections to your mail server only come from Heluna, to eliminate what we like to call "transient spam", where a spammer will ignore a domain's MX records and attempt to directly connect to your mail server themselves.
When a message comes into the Heluna system, we apply thousands of filters, including our proprietary sender reputation filters, shared block lists, machine learning algorithms, and message content filtering. All of these filters run within seconds, and only clean messages wind up getting delivered to you.
If your mail server goes offline, that's no problem. We'll continue to hold onto your messages for up to a month, and then once your server comes back online, those queued messages will be automatically delivered to you.
What sets Heluna apart from other antispam services is our advanced precise filtering based upon our own custom algorithms to determine a sender's reputation.
Our reputation filters wind up catching a significant portion of spam messages sent to your account, and can accurately filter out brand new spam techniques.
Heluna works together with other antispam vendors to share information about senders, using distributed block lists to filter out spam messages.
These shared block lists alone are effective enough to filter out over 70% of all incoming spam messages, and working in conjunction with our other filters makes Heluna that much more effective.
The Heluna system learns from every message that it sees, both spam messages and clean messages, and then applies that knowledge to new incoming messages.
Every message get assigned a score of how much the system thinks that the message looks like spam, and messages that score high enough ("I know this is a spam message") get placed immediately into quarantine.
Heluna recognizes spam based upon the content of the message itself, including any URLs inside the message, keywords, headers, and other attributes.
Pure content filtering is generally accepted as the least effective filtering method, but running in conjunction with our other filters, we've found that the content filters still catch a percentage of messages the other filters can't.
Your Heluna account can protect an unlimited number of domains, an unlimited number of mailboxes, and an unlimited number of messages. You're only charged for the clean messages that we deliver to your mail server. With one of our pre-paid plans, you can save even more.
Example A: 2 users, in 2 domains, getting 5 clean messages per day for a total of 300 clean messages per month = $0.75 per month
Example B: 30 users, in 5 domains, getting 50 clean messages per day for a total of 45,000 clean messages per month = $15 per month
Within the client dashboard, you can see logs of every message that was destined for your account, and statistics about all the domains in your account.
Users in any of your domains can set their own custom preferences, or you can set domain-wide (or account-wide) preferences as well, including approved senders, blocked senders, filter sensitivity, quarantine digest frequency, and much much more.