All email inboxes are protected by filters that help to block spam and junk emails from unwanted sources. These filters work on a scoring system that grades incoming mail against undisclosed criteria to determine whether it is junk or not:
One or two triggers might still allow emails through, but if enough triggers are set off the email will not be received in an inbox.
Warning triggers include:
Size of the email
Size of images inside the email
Heavy usage of images and links in the body of the email
Image-only emails without any accompanying body text
Very short or very long subject lines
'spammy' / ‘red flag’ keywords inside subject lines
Email text / content that is not personalized (Dear [First Name Last Name], etc.)
Use of non 'web-safe' fonts
Unrecognizable sender information / email being sent by an intermediary
Sending emails too frequently after a period of inactivity
Emails sent to individuals that weren’t recently engaged
The good news is zkipster has taken steps to maximize the deliverability of your email invitations! One of these steps is whitelabeling your domain and email addresses. Find out how to set this up on your zkipster account in this article here.
In addition to this, is it very important that your email recipient list is clean and regularly checked. Most, if not all, email providers’ spam filters penalize your domain or IP with a higher spam score (meaning there is a higher possibility of your emails going to the junk folder) if they see that you are sending emails to bad email accounts. A bad email account is an address that does not exist, has been disabled or has a full inbox. These addresses should be cleaned (or “pruned”) from your email list regularly to avoid this. If you allow them to add up on your list, you will eventually be flagged as a spam provider.
Additional tips we can provide:
Keep a consistent sending pattern - sending emails to individuals that are not recently engaged (past 90 days) can lead to spam and bounces. Sudden increase in the frequency of emails can also be damaging to your domain reputation.
Always send as slowly as you can - schedule sending emails in advance by using the schedule option
Be aware that spam filters and mail receivers are on high alert.
Please note: Most mail receivers (i.e. Gmail, Yahoo, etc.) and spam filters have tightened their security due to the influx of pandemic scams and phishing attempts, causing legitimate emails to be flagged. Each mail receiver/spam filter has its filtering algorithms, so it can be tough to generalize its rules. Please also check these helpful articles from Sendgrid and Higher Logic for more insights.