When emails go to spam folders there is no error message (the emails didn't bounce), which can make troubleshooting difficult. Avoiding spam folders completely is not possible but there are steps you can take to maximize inbox placement.

Emails can be blocked by a spam filter for several reasons

Spam filters consider dozens of factors and assign a "spam score" to each email. If this spam score is higher than a predetermined maximum, the email is moved to the junk folder.

Domain authentication is a prerequisite

To aid with inbox delivery you need to authenticate your email sending domain using. This is called DKIM setup and it's a technical task to be completed by your IT team/person.

Once domain authentication (DKIM) is completed there is still no guarantee that emails will go straight to inboxes. No email provider can provide such guarantee. But DKIM setup ensures that the technical configuration is correct and complete, which is a prerequisite to inbox delivery.

What Envoke's doing

Envoke's sending IP addresses are continually monitored to ensure they are in good standing. Your emails are sent from warmed up IPs in rotation for over a decade with good reputation. We employ feedback loops, automated bounce management and monitor anomalies in email activity.

No provider can guarantee 100% inbox placement

Despite the ongoing delivery management emails going to spam or junk folders are unavoidable. Our goal is minimize this but a surprising number of legitimate emails sent to opt-in lists end up in spam folders. Major Email Service Providers (ESPs) estimate this number is as high as 20%. This is not an Envoke-specific metric - it applies to emails sent from any provider.

No universal spam filter rule

Spam filters are different for each server, which means the same email may pass through one spam filter and be flagged by another. They are also "trained" by individuals so spam filtering within the same provider varies by users.

Once the recipient's mail server accepts a message for delivery (there is no failure / bounce recorded) we have no visibility into what decisions that server is making into how to handle it and why.

Suggestions to maximize inbox placement

  • Try sending an email to an email address that's different from the sending "from" email". Internal tests often behave differently than emails sent to external email addresses.

  • Only send emails to contacts who requested to be emailed and only send content they are subscribed to receive.

  • Don'ts send image-only emails. In fact the text to image ratio in your emails should be high: much more text content than images.

  • Including personalization in your email such as merging contacts' first name in the subject line helps in some cases as spam filters are able to verify that you know something about the person you're emailing (this is often not the case with purchased email lists).

  • Ask your contacts to add your "from" email address to their safe senders list or address book.

  • Ask your contacts to check their custom spam filtering rules that may block your email.

A fraud detection error is shown and the email is blocked internally

If you see a fraud detection or spoofing error notice in your email (usually near the top) chances are it's due to an internal spam filter. Most often this notice is only shown for internal emails and your contacts won't have this issue.

It is related to sending messages from @yourdomain.com to another @yourdomain.com email via a third party software such as Envoke.

To mitigate this issue you need to authenticate your email sending domain using DKIM

Email blocked internally even after DKIM is configured and all other best practices are followed

Our emails are sent from a variety of IP addresses using the lists.bettermail.ca domain. You can whitelist our sender IPs and ensure @lists.bettermail.ca is an allowed sender.

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