Email providers like Gmail, Outlook, Yahoo or Comcast pay close attention when they see large batches of emails. If something about your message or sending setup looks suspicious, your emails may get blocked or filtered. Here’s how to maximize delivery.
1. Avoid Spikes in Messaging
Send to a relatively consistent number of recipients at a consistent interval.
Sending nothing for 4 weeks and then blasting 10,000 emails can cause problems.
A steady cadence builds trust with providers and improves inbox placement.
2. Don’t Send Flyers as Images Only
Some customers design a flyer in Canva, then place that flyer into the Buzz 360 Email as a single image.
The problem:
Text inside an image is very hard to read on mobile devices.
Screen readers for the visually impaired can’t access the text at all.
Email filters often block or downgrade image-only messages.
Images without “alt text” do not only makes your message inaccessible but will also reduce deliverability.
Better approach: Use your Canva design as a graphic element but include the text as well as key information (event name, date, location, call-to-action) in real text in the email body, and always add alt text to images.
Good news: Using the Buzz360 message editing system automatically makes your messages mobile-friendly so they look great across all devices.
3. Smart Message Composition
Use straightforward subject lines (no ALL CAPS or spammy phrases).
Our system automatically creates a plain-text version of your message.
Use the hyperlink feature inside our platform—no need for bit.ly or other link shorteners.
4. Keep Lists Healthy
Ideally, send only to people who opted in.
Buzz360 automatically stops messages to bounced addresses, so you don’t have to worry about that.
When possible, prune long-term inactive contacts to improve engagement.
Do not upload non-verified list into your Buzz360 system. You will be blocked from sending further usage of the system if your failed rate is to high. See below.
5. Authenticate Your Domain
Make sure SPF, DKIM, and DMARC are set up.
These are major trust signals email providers look for.
If your domain is registered through Buzz360, we monitor and maintain these settings for you automatically.
6. Warm Up and Maintain Reputation
Consider smaller regular sends (like a newsletter) to keep your domain “warm.”
Avoid silence followed by a sudden large blast—this raises red flags.
7. Encourage Positive Engagement
Encourage interaction: invite readers to comment in a reply
Include a link for more information, or to comment or to RSVP.
The more people open, click, and reply, the better your sender reputation—and the more likely your emails land in the inbox.
Ask recipients to whitelist you (add you to contacts).
8. Understanding Delivery Rates and Stats
Buzz360 maintains a system wide delivery rate of over 97%, which is considered excellent and shows that the technical settings (SPF, DKIM, DMARC) are in good order.
Bounce rates vary depending on the sender’s reputation and list quality. We provide detailed stats on bounces, so you can monitor and improve.
Open rates range widely—from about 8% to over 60%—and are driven by what you send (subject lines, content, and relevance).
9. Notes
Messages are considered “delivered” once they reach the receiving system. They may still bounce up to 8 times before final delivery, which is normal in email processing. The bounces are driven by your reputation which is driven by your sending habits.
Important: Your account risks being shut down if
your Bounce Rate exceeds 5%
your Unsubscribe Rate exceeds 1.4% (1% if unsubscribes are higher than clicks)
your Blocked message rate exceeds 20% (messages the recipients provider blocked without delivering them to the email account)
10. Understanding some Messages inside the Buzz360 System
Audience: you create the audience based on filtering in the "contacts"
Attempted: the number of contacts in your audience that have a valid email address
Credits: the cost of the message abased on the Attempted contacts
Received: Contacts received by the mailing system
Opens: mails opens, unique and total
Clicks: clicks, unique and total
Fails:
Fails are removed from any active sending Audience
Most Error messages are self explanatory, "too old" means the system attempted to deliver the message 8 times. The reason for this is typically that the recipients provider is limiting the number of messages they are accepting from your domain in one sitting. You can remedy this by sending smaller batches.
Unsubscribes: These are recipient triggered unsubscribe (Note: The system admin can force unsubscribe emails). Unsubscribed are automatically removed from any mailing lists