Why Outlook Puts Your Emails in Spam and Makes You Look Like a Scammer

You’ve done everything right. Your app sends transactional emails exactly when it should. You’ve verified they were sent. But users with Outlook or Hotmail addresses still miss them. Later they say, “Oh, I found it in spam.”

And that’s the real problem.

Even if your user finds your message, it’s sitting in the same folder as scams, fake invoices, and phishing attempts. That’s what you’re associated with now.

Your product might be solid, your message helpful, your timing perfect. But none of that matters when Outlook dumps it in the junk folder.

Getting Marked as Spam Hurts More Than Deliverability

You’re not just missing out on inbox placement. You’re being seen as unprofessional. A product that can’t even deliver a basic email correctly comes across as unfinished, risky, or careless.

It chips away at user trust. It makes your product feel like it hasn’t figured things out. That perception can kill growth faster than any technical bug.

So how did we end up here?

Outlook uses a filter system that looks beyond content. It pays attention to things like:

• Whether your SPF, DKIM, and DMARC are aligned

• Whether your domain is new, or linked to spammy traffic

• Whether you’re sending from a clean IP

• Whether your headers make you look like a bulk sender

Most email services gloss over these. They assume passing basic authentication is enough. But with Outlook, it's not.

Why Lemon Email Works

We designed Lemon Email to be the solution to this exact issue.

Everything we do is aimed at one outcome: inbox placement at Microsoft-controlled domains.

We give you real domain alignment, warmed IPs with good reputation, proper headers, and infrastructure that doesn’t get you mistaken for a marketing blast.

You won’t see “sent via ESP-name.com” in your headers. You won’t be signed by a random shared DKIM key. And you won’t be grouped with 10,000 apps using the same sending pool.

We remove the triggers Microsoft watches for. The result is simple: your emails land in the inbox.

Stop Looking Like a Scam

If you’re serious about your product, you can’t afford to be seen as spam. Every missed email is a missed opportunity. But worse, every spam-folder placement is a dent in your brand.

Lemon Email isn’t just about deliverability. It’s about credibility. Your users won’t notice the infrastructure. But they’ll notice if your email ends up next to a lottery scam.

Don’t let Outlook decide your brand looks untrustworthy. Control what you can.

Lemon Email helps you do that.