Tools for sending email
Free checks, no sign-up and no email address required. Only public DNS records are queried, and we keep no list of the domains that were checked.
Check
Create
Understand
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Set up SPF, DKIM and DMARC
The guide to go with it: the three methods explained, the records field by field, and an order for switching over that does not break delivery.
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SMTP error codes and bounces
What a code means, when it is temporary, and which five cases account for most of them.
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IP or domain on a blacklist
If the DNS records are right and mail still lands in spam, the cause is usually the reputation of the sending IP address.
Missing something here? Tell us which tool would help you with delivery: start@mailbridge.email. Or try MailBridge free for 14 days, where these checks are already built in for your domains.