Understanding email quarantines
Types of quarantines
There are three different types of quarantines:
- Temporary quarantines: soft bounces, addresses temporarily not available (inbox full, out of office messages...).
Duration of a temporary quarantine:
- 1st time → 1 week
- 2nd time → 2 weeks
- 3rd time → 4 weeks (1 month)
- 4th time → 8 weeks (2 months)
- 5th time → 16 weeks (4 months)
The fact that a webmail classifies an email address as spam doesn't imply a quarantine. In this case, the problem is the sender, not the address quality.
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Long-term quarantines: hard bounces, addresses that don't exist or don't exist anymore.
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Blacklist: people who have marked your emails as spam from their inbox.
Quarantines (both, long-term and temporary) are common to all databases and Actito clients. Blacklists only apply to your particular license.
This means that a quarantined address is, in a way, a blocked address all the users. However, a blacklisted address is an address that has specifically blocked your emails.
Why is an email quarantined?
There are usually three reasons for an email to be quarantined.
- An email has been sent to a given profile and a hard bounce has taken place. When the domain is well-known, such as @gmail.com or @yahoo.fr, the bounce is trustworthy. In this case, a long-term quarantine starts right after the first message. If it's not a well-known domain (a corporate domain, for example), the quarantine will not be as direct and up to two messages will be allowed before starting the long-term quarantine.
- Several emails are sent over several months to an address and there is always a soft bounce (for example, full inbox). First, a temporary quarantine (one or more weeks) will start. If the issue persists, the address goes into a long-term quarantine.
- A quarantine history from the tool previously used by the client (if that tool is reliable and manages quarantines in a similar way to Actito) is imported and the email addresses are put in quarantine.
Even if we are extremely cautious, an imported history might always contain mistakes. In this case, the source of the error can be identified and a quarantined address could be imposed or lifted to solve the problem. The history import is also verified. When a particularly big license is integrated into Actito, it can be cleaned so as to release the most active quarantined profiles.
If someone clicks on the "Mark as Spam" button (which is a complaint), they will be blacklisted, and all the messages sent by your license to their email address will be automatically filtered. Their profile's blacklist field will show the moment the complaint was issued.
It is possible to release an email address from a blacklist, but the process a bit more complex.
Some "junk" domains are filtered automatically. Some domains, such as "yopmail" for example, offer temporary addresses that will damage your database quality and your deliverability on the long run.
All this information is linked to the email addresses and not to the profiles. This means that a person may leave the quarantine or the blacklist only by changing its email address. Of course, if the new address is not already quarantined or blacklisted.
How to check if an address is quarantined?
It's possible to find out who is quarantined and to use that information in your targeting. However, this is only possible when you have already tried to contact your profiles at least once.
This is how you can find out how many addresses are affected by quarantines and blacklist restrictions:
- For quarantines:
- For quarantines and blacklist:
For a particular profile
If you want to find out the status of a given profile, you can check their profile file. In the "Attributes" section, in the "Technical attributes", there are two fields that will provide you with this information.
The first one is "Blacklisted on": the moment where a profile complained
The second one is "Latest email status": if the address is filtered, it'll be shown here
In the Interactions section you can check, email by email, if they have been filtered and why. If you click on the eye icon, at the right of the email, you'll obtain more information:
Can a quarantine be lifted?
If you want to release a given number of specific quarantined addresses, please contact our support indicating the relevant addresses. You should specify if the quarantine is long-term or blacklist. The procedure is slightly different for blacklist cases, where you will have to take on a part of the process.
When it comes to bigger number of profiles (hundreds or thousands), an in-depth investigation is required to understand why there are so many quarantined addresses.
Is it risky to lift a quarantine?
It is not risky if we are to release just a couple of profiles from long-term quarantines. In the worst case scenario, we would receive hard bounces from them. As long as they do not amount for more than 1% of the campaign, this is not a problem. The profiles would then be quarantined again and, at least this time, we would know that they are rightly so.
However, if we are to release a big number of addresses, the risk of having our bounce rate increased is high and that can impact our deliverability on the long run. In this case the options must be considered on a case by case basis. The strategies will depend on the total volume of your campaigns and the number of addresses affected.
On the other hand, releasing a profile from a blacklist instead of a quarantine is a different process. In this case, the risk is rather legal. For that reason, there's a different procedure in place for which the profile will have to testify that he agrees not being blacklisted anymore.