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How to prevent your emails from being blocked or bounced

Simple best practices to help your emails reach your leads’ inbox

Luise avatar
Written by Luise
Updated over 2 weeks ago

Emails are a central part of your funnel – they bring your leads into conversation with you and turn prospects into real customers. But if your messages end up in the spam folder or get blocked, all your work is wasted. The good news: there are proven best practices that can significantly increase your chances of landing in the inbox.

Why this matters

Every bounce and every spam report directly affects your sender reputation. Providers like AWS, Gmail, or Outlook track this – and if your rate is too high, you risk your emails not being delivered or your sender being blocked.

While nothing can guarantee 100% inbox placement, following a few essential practices will greatly improve your chances.

Best practices for successful email deliverability

1. Same sender domain as your funnel domain

  • Your sender address should always match your funnel domain.
    If your funnel runs on smithconsulting.com, your emails should also come from @smithconsulting.com.
    This builds trust and recognition.

  • Avoid generic or passive sender addresses like no-reply@ – actively monitored inboxes help build trust and increase deliverability.

2. Recognizable branding & sender name

  • Place your logo and brand colors clearly in your email design.

  • Don’t use emojis in the sender name – even though this is technically possible, inboxes often flag this as suspicious.

  • Use a consistent, recognizable sender name (e.g., your company name). This should also match your sender address.
    ✅ Do:
    Sender name: Johnson Coaching
    Sender address: contact@johnsoncoaching.com

    ❌ Don’t:
    Sender name: Mike
    Sender address: johnson123@yahoo.com

3. Set clear expectations in the funnel

  • Communicate in your funnel what kind of emails your lead will receive after signing up (e.g., tips, offers, updates). This way, your messages won’t come as a surprise.

  • Also let them know how often you’ll email them (e.g., “only when we have new offers”). This makes your communication more predictable and professional.
    ✅ Do:
    “Sign up here and get our 3-part email series with the top tax tips for small business owners.”
    ❌ Don’t:
    “Sign up now for exciting updates!” → followed by lots of unclear promotional emails unrelated to the funnel entry.

4. Relevant & personalized content

  • Remind recipients at the start of each email why they are receiving it:
    Example: “You signed up on July 14 through our funnel to get more information…”

  • Only send the type of emails your leads expect based on their funnel entry.
    ✅ Do:
    A lead signs up for a free e-book on “Tax tips for small businesses” → you send the e-book & info about taxes for small businesses.

    ❌ Don’t:
    Instead, you suddenly promote credit cards, insurance, or unrelated partner products.

  • Personalize your emails: address leads with content tailored to their funnel answers – e.g., their interest in a specific product or their location.

In general, your content should always be engaging, useful, and high-quality.

5. Professional subject lines

  • Short, descriptive, and not misleading.

  • Avoid excessive caps, emojis, or exclamation marks.

  • Stay away from “spammy” words (especially in finance, medication, or sexuality).
    ✅ Do:
    “Your requested e-book: Tax tips for small businesses”
    ❌ Don’t:
    🔥🔥!!!MAKE MONEY FAST AND GET RICH!!!🔥🔥

6. Healthy text-to-image balance

  • Don’t send emails that consist almost entirely of images.

  • Keep a healthy ratio of text to visuals.

  • Avoid overly large image or media files – they increase load time and raise spam suspicion.

7. Keep your list clean

  • Regularly remove inactive contacts from your CRM.

  • Make sure email addresses are actually valid – strings like accidlviekfueocd@xlfie.com are almost certainly fake and should be filtered out early.
    -> When possible, use email verification to filter out fake addresses automatically.
    -> If that’s not an option, manually review suspicious-looking entries and remove them from your CRM – if you clean your list proactively you prevent unnecessary bounces and increase your deliverability.

8. Test the right way

  • Test your funnel in preview mode. This prevents you from generating bounces with fake test emails.

    Preview.png (1788×1060)

  • Use the dedicated test function for email testing.

    TestMail.png (2194×1344)

  • If you test in the live funnel, keep the volume low & use a real email address of your own (❌ Don’t: test123@test.com) so your bounce stats aren’t affected.

9. Legal & compliance

  • Make sure every message contains a clearly visible unsubscribe link.

  • Only email addresses that have truly signed up through your funnel – never import purchased or shared lists into a CRM with active automation.

Conclusion

Bounce prevention is all about building and maintaining trust.

Make sure your sender is clearly recognizable, your emails fit your branding, and your content is relevant. Also, keep your recipient list clean – this keeps your bounce rate low and your sender reputation strong. This way, you lay the best foundation for your emails to reliably land in the inbox – and minimize the risk of being blocked.

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