Q. How do you fix email deliverability?

Fix it in order of the four causes. Confirm SPF, DKIM and DMARC are present and passing, since that is binary and quick to check. Then look at your sender reputation and your complaint rate, then remove dead and disengaged addresses from your list, then review the structure of the messages themselves. Working in that order matters, because reputation cannot recover while authentication is still failing.

Q. What is a good deliverability rate for email?

Most senders should expect the large majority of their mail to reach the inbox, and a rate that drifts down over consecutive sends matters more than any single figure. The complaint rate is the harder threshold: Google asks bulk senders to stay below 0.1% and treats anything above 0.3% as grounds for rejection. For the benchmarks and how the rate is calculated, see what counts as a healthy deliverability rate .

Q. How can I check the deliverability of my email?

Send to real inboxes at Gmail, Outlook and Yahoo and record where each message landed, because a test to your own address proves almost nothing. Your own mail server trusts your domain in a way other providers do not. Pair that with a seed or spam testing tool before each campaign, and keep an email log so you can see what happened to individual messages. The full method is in how to test email deliverability .