[leetrout]

> And never forget to use -all

And yet even Googles docs recommend ~all.

If you're using 3rd party bulk senders you probably want to consider the cost and benefit of -all vs ~all

https://support.google.com/a/answer/10684623?hl=en

[aj3]

3rd party bulk senders likely know more about mail delivery than you do. Also DMARC aware recipients will treat ~ALL in SPF exactly like -ALl.