Spam filter bingo

If your cold emails are vanishing into the void, you might be playing Spam Filter Bingo - and losing. We broke down the most common mistakes that silently kill your deliverability and stop your outreach before it even begins. Avoid these classic traps to reach any inbox and give your emails a real shot at getting opened.

1. You skip the warm-up

Sending cold emails without warm-up is like walking into a job interview without pants - bold, but not effective.

Ramp up gradually, and don’t turn off your warm-up tool. Ever. We recommend using an automated warm-up tool like TrulyInbox or Warmbox.

2. You don’t personalize

Would you open a generic email?

Neither will your prospects. Personalization improves reply rates and builds trust. Try the SalesPort AI Researcher to personalize efficiently and effectively.

3. You neglect the technical setup

Missing SPF, DKIM or DMARC?

That’s like sending mail without a stamp. Set up your technical records - or spam filters will shut the door in your face. Don’t know how? YouTube is your friend.

4. You send to outdated or unverified contacts

Bad quality data is the archenemy.

30% of people change jobs each year. Verify your list or risk high bounce rates - and spam flags. With the SalesPort Extension you get the most up-to-date contact data out there + it’s already verified.

5. You send too many emails...

or have sudden volume spikes.

Going from 0 to 300 emails/day? You’ll get banned. Stay under 30 emails/day during warm-up. Grow slow or get blocked. And NEVER-EVER send more than 100 emails/day. Want to send more? Get more sending accounts.

6. Your ESP is trash

Free email accounts don’t cut it.

Use a professional ESP (email service provider) to increase your chances of landing in the inbox. Here the two most trusted ones are custom Gmail and Outlook domains.

7. Your contact list is sloppy...

and full of broken or weird characters.

Mangled names and special character chaos = instant delete. Keep your data clean and emails readable. A high quality data-provider like SalesPort can help with that.

8. You ignore the law

GDPR fines start at €6,000.

Don’t mess around. Use compliant tools like SalesPort and honor opt-outs.

9. You forget about mobile users

Over 40% of emails are opened on phones.

If your email looks bad on mobile, it gets deleted. Fast. Always check how your email looks on a standard smartphone.

10. You send too many links & spammy words

Your email isn’t a landing page.

One link max. Also, avoid red flag phrases like “Buy now” or “Free money.” Spam filters are trained to catch that.

How many did you hit?

If it’s 2 or more, your deliverability needs help.

Use SalesPort to stay compliant, personalized, and always land in inboxes - not black holes.