Sending To Gmail
To reduce bad emails (spam, phishing, etc.), Gmail has and continues to implement and tweak the email authentication technologies they use to allow good emails and block bad emails. About a year ago they started looking at SPF and DKIM for all senders. Recently they started requiring DMARC, SFP, or DKIM aligned with the From domain for some senders.
While Gmail's changes are focused on large volume senders, their stricter policies affect everyone. And while the large guys have the resources to meet (or circumvent) each new Gmail change, many regular people are finding they are not able to get some or all of their emails through to Gmail addresses.
CheckTLS can help everyone meet Gmail's expectations.
CheckTLS is not in the business of telling you how to fix your email system. CheckTLS is in the business of testing and verifying your use of the technologies that Gmail is checking. See our Email Authentication Introduction page to learn about these technologies.
Your email administrators can use the CheckTLS.com website to:
- help you decide which technologies you should be using
- show you where you are today in implementing a technology
- check your progress as you work to implement and tune a technology
- monitor your email system to assure the technology continues to meet your needs
Unlike other websites, CheckTLS doesn't just show you your public email settings. We do real testing of your real email. You send us an email just as you would send it to Gmail, and we look at the email and tell you what Gmail will think of it. A real email is the only way to tell if your settings match the reality of your email system. For example, it's one thing to put in a DNS record that says "these IP addresses are good for me", and another thing to verify that yes, what you put in the DNS record is really the right IP address for your sending email server.
Check that your email is good.
Click the button below to start a test email to CheckTLS.
Send the email without making any changes to it.
After a minute or so, a summary of how your email meets Gmail's requirements will appear.
Email administrators can use ("TestSender") to run a more thorough test.
It is very important to continue to watch your mail system. Authentication technologies can be complicated, and email techs are famous for forgetting to update all the moving parts when they make a change to one piece. A year from now, how long will it take you to figure out that some of your important emails are not getting through to some of your customers because a tech updated a server?
CheckTLS subscribers continously monitor their email and get alerts if anything changes.