Even if your mailing meets the conditions, it may end up in the spam filter, especially with free providers such as Hotmail or Gmail.
With Hotmail and sometimes also with Google, emails end up directly in the spam folder if the sender address is unknown and not in the contact list.
Spam filters are becoming increasingly strict. Unfortunately, this is necessary, because spammers are getting smarter. Fortunately, you have more influence on it than you might think.
Create a Hotmail and Gmail account and send an email to these email addresses. Then look in your Hotmail or Gmail account at the header of the email you sent. Or, even easier, check here if your email contains spam: https://www.mail-tester.com/
In the Mail Headers of many providers you will find more information about the spam score the message has received. This looks something like this:
X-spam-status: no, hits = -0.4 tagged_above = -999.0 Required = 5.0: Tests = Bayes_00, from_no_user, HTML_80_90, HTML_IMAGE_ONLY_16 ,: HTML_MESSAGE
Behind “tests” are the characteristics that have been detected in your email. There are thousands of these characteristics: some give penalty points (email looks like spam), others give bonus points (email does not look like spam). If your email exceeds a certain number of penalty points, the email will be rejected (often 5 penalty points). In this case the following features have been detected:
BAYES_00
The Bayes check (a check for spammy words) found 0% spam words. You will receive bonus points for this.
FROM_NO_USER
There is an error in the From line in the headers of the email you sent, for which you will receive penalty points.
HTML_80_90
The email consists of 80 to 90% HTML codes, a characteristic of spam mail.
HTML_IMAGE_ONLY_16
The email consists mainly of images, also a characteristic of spam.
HTML_MESSAGE
The email is written in HTML, which gives a (very small) indication of spam.
Now in this case this email would get through the filter, but to be on the safe side you can limit the amount of images and HTML and adjust the From line. The features are endless. A good method to find the details of a feature (tag) is to search Google for the feature and “spamassassin”.
If you send mail from your website, make sure the sender is correct! This must be the same as the web address you are emailing from. Many providers check whether the sender exists.
Adding SSL gives security to your website. DKIM ensures more secure email. With SSL and DKIM, parties such as Hotmail and Gmail also see you as a more secure party.
Starting in February 2024, Gmail will require the following requirements for senders who send 5,000 or more messages per day to Gmail accounts: authenticate outgoing emails, don't send unwanted or unsolicited emails, and make it easy for recipients to unsubscribe.
Also check via internet.nl whether your email account meets all the conditions. You can adjust all missing settings yourself in your account.
If you can't figure it out, request help from our support department by opening a ticket.
We also have an additional service that guarantees that the outgoing email is always delivered.
