Research shows that exclamation points in subject lines lead to lower than average open rates because this type of punctuation is actually a trigger for spam filters,” the ebook says.
What triggers spam filters?
Common things that trigger spam filters
- Words and Phrases.
- Images.
- Links.
- Email Engagement and Sender Reputation.
- Sending Address.
- Duplicate Emails.
How do you prevent getting caught in spam filters?
Without further ado, here are the things to take care of to avoid spam filters:
- Pay Attention to Technicalities.
- Use a recognizable sender name.
- Choose a reliable ESP – Email Service Providers.
- Get a certificate by a third party.
- Check if you are a blacklisted sender.
- Test your emails before sending them.
