Hello @MaryD224 ,
Here are some general best practices for deliverability.
Deliverability can have a lot of variables, from elements on our side, on your side, on the recipient's side, and in their email system company's side. It's also a generally good idea to set up additional authentication for your emails - whether that's through us if you have a free domain (e.g. Gmail, Yahoo, AOL, etc.) or via self-authentication if you have your own domain (such as through a business or other organization).
If you'd like to learn more about safelisting, and what it entails:
Safelisting domains in a security system
Safelisting email addresses in an email client or security system
If you're wanting more in-depth, specialized insight on your current deliverability, it'd be worth speaking with one of our Deliverability agents.
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Regarding the header, you'll want to click in the space above the email as you're editing it to access the header section for editing. If you're having trouble accessing the little header editing window, this would indicate some kind of connectivity error occurring - typically caused by something like extension interference, a caching error, or particularly slow internet speeds. If you're having trouble with the feedback pop-ups while working in the site, those would also indicate connectivity issues.
If none of the connectivity troubleshooting alleviates the two above issues, please call our general support number so they can continue troubleshooting with you live. If possible, please have a screenshot of your speed test, including the More Info section, ready for the phone agent.
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William A
Community & Social Media Support
