Sending emails with Reach
This authority allows email clients to clearly see who is sending emails, even if the email address is spoofed.

In order to use an email address that resides within your domain (whether it is a REAL account or not) you will need to reach out to
support@reach.cloud for assistance with DKIM and better deliver-ability, otherwise, email sent from Reach will automatically be filed in JUNK/SPAM on your destination client's end.
What is SPF?
SPF or Sender Policy Framework is used to indicate to mail exchanges which hosts are authorized to send mail for a domain. It is defined in
RFC 4408 and clarified by
RFC 7208.
How do I set this up?
You will need access to edit your DNS Zone file for the domain you wish to use. When you have access to your zone file, you will either already have an SPF record or not.
An SPF record is a TXT entry that includes some basic information about versioning and a space separated list of source domains that you grant authority to deliver on your behalf.
New SPF TXT entries
You will need to add a TXT record (do not use the SPF record time as it is deprecated). In the value field, just paste the example below:
"v=spf1 a mx include:mailgun.org ~all"
Existing SPF TXT entries
If you already have an SPF record then you'll simply need to APPEND the following:
"include:mailgun.org"
Make sure that you paste this BEFORE your final "-all" or "~all" at the end otherwise you will invalidate your SPF entry.
Details about the specific structure of a valid SPF record can be found
here.
You can test your SPF record once it has propagated
here.