Subscriber Engagement: Email providers increasingly use engagement signals to determine deliverability. When your recipients consistently to my inbox open, read, reply, or click through your emails, that’s a positive signal that your email wants to signal. Positive engagement signals (opens, clicks) build credibility and improve inbox placement for future deliveries. Conversely, when a lot of your users ignore your emails, delete them unread, or job function email database mark them as spam, that’s a negative signal. Think about it this way: providers like Gmail or Outlook watch how their users interact with their messages. High engagement = “This sender provides value, so .” High deletions or spam flags =
My users don’t like this, so I’ll probably send it to spam.
Therefore, senders with high engagement rates tend to enjoy better deliverability. That’s why sending relevant content to the right people (and weeding is your content generating too few leads? these could be the reasons. out those who never engage) is so important for keeping them in the inbox.
Email List Quality (Hygiene):
The quality of your email list has a direct impact on your deliverability. A “clean” list is one that contains valid, opted-in, and active email addresses. A list with a lot of bad addresses (hard bounces), spam traps, or unauthorized users will result in high bounce rates and spam complaints, both of which ruin your deliverability. ISPs see high to my inbox bounce rates as a sign of a bad sender (they don’t maintain their lists). Spam complaints obviously phone number spanish damage your reputation. Good list hygiene means regularly removing or correcting bad addresses, avoiding sending to people who never engage, and not using purchased lists. For example, repeatedly sending emails to addresses that hard bounce will worsen your bounce rate and raise red flags with your ISP. On the other hand, senders who prioritize list hygiene will benefit greatly.
Frequency and Volume:
How you send your emails (how often and how much) also affects deliverability. Sudden spikes in email volume or irregular sending patterns can look like spam activity. ISPs will notice if you go from sending 1,000 emails a week to 100,000 emails a day. This is a warning sign that you may be spamming. Similarly, if you send a huge list of emails very infrequently (say, once a year), many recipients may not remember you and may mark you as spam when you get there. It’s a good idea to have a steady and consistent sending schedule so to my inbox that your target audience gets used to your emails. If you need to increase volume (say, because your list is growing or you have a large campaign), it’s a good idea to gradually increase your volume to “warm up” your sending IP/domain. This will help you build a positive reputation as you scale. Think of it like not overwhelming the postal system all at once. Regular and periodic sending will help keep your subscribers engaged over time, rather than surprising them with a sudden notification after a long period of silence.
Each of these factors is within your control to some degree
Which is good news. You can adjust your practices to improve each area. For example, if you notice that your emails are frequently going to spam, you might investigate: Is my sender reputation low (perhaps due to an old, unengaged list)? Is my SPF/DKIM authentication missing? Does my content look like spam? Below, we’ll cover best practices for addressing these areas and improving your deliverability.