Troubleshooting
How to Avoid Bounces
Emails that are not delivered and are returned to the sender are called bounces. The surest way to avoid them is to keep a clean, permission-based mailing list, authenticate your sending domain with SPF, DKIM, and DMARC so mailbox providers accept ...
When Gmail states your sender domain is spam
Sender domain reputation matters a great deal in successful inbox placement. If Gmail shows the warning “Lots of messages from yourdomain.com were identified as spam in the past,” it means recipients have been reporting your mail as spam and Gmail no ...
When Gmail warns of authentication failure
An authenticated domain shows mailbox providers that your emails are genuine and not spam. If Gmail warns that it can’t verify your domain, it means your mail failed authentication — usually a missing or broken SPF/DKIM record, a DMARC alignment ...
When Gmail states your email content as spam
The prime part of an email campaign is the message you convey to your contacts. When you send campaigns, ESPs (Email Service Providers) and ISPs (Internet Service Providers) analyze the email before delivery, and recipients can also mark it as spam ...
When Gmail says your emails have suspicious links
Gmail is careful to protect its users from phishing activities, so it classifies suspicious emails as spam and shows a red warning on the message. In short, this warning means Gmail distrusts a link (or the sending setup) in your email — usually ...
Where can I find lost emails
From time to time, your emails may get lost in the process of reaching your contacts. Usually a “lost” email hasn’t vanished at all — it has landed in the spam or another folder, been held back by a corporate filter, or bounced back because of a bad ...
How to make your emails land in Outlook's Focused Inbox
Microsoft Outlook’s Focused Inbox feature helps its users categorize their inbox based on interest, splitting mail into a Focused tab and an Other tab. It’s similar to Gmail's Primary tab. Emails landing in the Focused Inbox are considered safe by ...
Why do emails land in the spam folder
A lot of effort goes into planning and framing a marketing campaign. With a little more effort, you can ensure that these campaigns yield a higher ROI instead of ending up in the spam folder. In short, emails land in spam when the mailbox provider ...
Why Gmail rate limits your marketing emails
If you run email marketing campaigns and send to large lists through Zoho Campaigns, or similar platforms, you may have come across a cryptic SMTP error in your bounce message starting with 421 4.7.28. This is Google temporarily blocking delivery to ...