Why your emails land in spam (and how to fix it)
Quick answerEmails usually land in spam because of an unverified sending domain, a list full of people who never opted in, spammy formatting, or a missing unsubscribe link. Most of these are things a business owner can check and fix without any technical background.
Most business owners have felt it: you send a newsletter or a promotion, and the numbers come back much lower than you expected. Before you assume nobody's interested, it's worth checking something simpler. A good number of emails never make it to the inbox at all.
The good news is that spam filters aren't a mystery. They're looking for a handful of specific signals, and most of them are things you can check yourself in a few minutes.
Send from a domain that's set up correctly
Inbox providers like Gmail and Outlook want proof that an email really came from who it says it came from. That proof comes from a couple of small technical records added to your domain, often called SPF and DKIM. Think of it as verifying your domain: a one-time setup that tells Gmail and Outlook "yes, this business really does send from this address."
If you're sending from a free address like a Gmail or Yahoo account instead of your own business domain, that's one of the fastest ways to end up in spam. A real domain (yourbusiness.com) that's been verified this way is the foundation everything else builds on.
Most email tools, including MailerLite and similar services, walk you through this setup with copy-paste instructions, and support teams are usually happy to confirm it's active if you ask. If you're not sure whether yours is done, that's worth checking first before anything else on this list.
Only email people who said yes
Spam filters pay close attention to how people react to your email. If a lot of recipients ignore it, delete it without opening it, or mark it as spam, that tells the filter something about you, and it starts routing more of your mail away from the inbox.
The best protection is a list built from real opt-ins: customers, past clients, and people who signed up on your site or in your shop. If you're not sure how to grow that list the right way, building an email list for a local business covers the practical side of it.
Buying or borrowing a list of contacts skips that step entirely. Those people never agreed to hear from you, so a much larger share of them will ignore your email or report it, which drags down how every future email performs, not just that one.
Watch the words and the formatting
Certain words and habits catch a filter's attention: ALL CAPS SUBJECT LINES, a string of exclamation points, or phrases that sound like a sweepstakes ("FREE MONEY," "ACT NOW," "100% GUARANTEED"). None of these will sink an email on their own, but they add up, especially alongside other warning signs.
The same goes for the body of the email. A message that's a single giant image with barely any text, or one packed with too many links, can look suspicious to a filter even when a person would read it as perfectly normal.
The fix is usually just writing the way you'd talk to a customer in person: clear subject line, a mix of text and images, and a reasonable number of links.
Give people an easy way to leave
Every marketing email needs a working unsubscribe link, and it needs to actually work when someone clicks it. This isn't just good manners. Inbox providers track how often people report an email as spam instead of unsubscribing, and a hard-to-find or broken unsubscribe link pushes people toward that button instead.
Make it visible, make it one click, and honor it right away. A shorter list of people who actually want your emails will outperform a longer list of people who don't, every time.
Keep an eye on your list over time
Email addresses go stale. People change jobs, close old accounts, or simply stop opening anything from anyone. Sending to a list full of dead or inactive addresses tells inbox providers your mail isn't wanted, even if the content is fine.
It's worth occasionally removing addresses that bounce or that haven't opened anything in a long stretch, and giving inactive subscribers one more chance with a "still want to hear from us?" message before you let them go. A smaller, engaged list reaches more inboxes than a large one nobody reads.
The honest part
None of this is complicated, but it also isn't a one-time fix. Domain setup is mostly set-and-forget, but list quality and sending habits need occasional attention, and it's easy for that to fall down the priority list when you're running a business.
If you'd rather not keep track of all of it yourself, tell us what you're working with and we'll take a look at your setup, or get a clear quote for handling your email marketing going forward.
Frequently asked questions
How do I know if my emails are going to spam?
Watch your open rates over time and check for a steady drop, especially right after you switch email tools or send to a new list. Many email platforms also show a deliverability or inbox placement report you can check directly.
What is SPF and DKIM, in plain terms?
They're small records added to your domain that verify an email really came from your business. Most email tools guide you through setting them up once, and after that they run quietly in the background.
Is it ever okay to buy an email list?
It's not a good idea. People on a bought list never agreed to hear from you, so far more of them ignore or report your email, and that hurts how all of your future emails perform, not just that one.
