A free MXToolbox alternative with fixes in plain English
MXToolbox is the classic place to look up MX, SPF and blacklist results. Make It Flow offers the same everyday email and DNS checks for free, then explains what each result means for your inbox placement and gives you the record to copy.
What MXToolbox is
MXToolbox offers free online lookups for MX, SPF, DMARC, DNS and blacklists, plus paid plans for monitoring, alerts and delivery reporting.
Make It Flow vs MXToolbox, feature by feature
Full email deliverability report
Make It Flow One check covering SPF, DKIM, DMARC, MX and more
MXToolbox Separate lookups
Based on each product's public website at the time of writing. Features and plans change, so check MXToolbox's own site for current details.
Choose MXToolbox if
- You need continuous blacklist and DNS monitoring with alerts across many domains.
- You want DMARC aggregate report processing as a managed service.
Choose Make It Flow if
- You want each result explained, with the exact record to publish.
- You want one deliverability report instead of many separate lookups.
- You also want to check your website's SEO, speed and security in the same place.
Using both
Use Make It Flow to set up SPF, DKIM and DMARC correctly the first time, and a monitoring service if you need round-the-clock alerts.
Questions
Are the email checks really free?
Yes. The SPF, DKIM, DMARC, MX, blacklist and deliverability checks are free with a free account.
Will it tell me how to fix a failing SPF record?
Yes. It shows what is wrong, such as too many DNS lookups or a missing include, and the SPF generator builds a corrected record.
Does it work with Google Workspace and Microsoft 365?
Yes. The checks read public DNS, so they work with any email provider.
More comparisons
MXToolbox is a trademark of its owner. Make It Flow is not affiliated with or endorsed by MXToolbox.