American Heritage Bank: email security grade A

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American Heritage Bank, Sapulpa, Oklahoma, is the 732nd largest FDIC-insured US bank by total assets ($1.5bn). On 4 November 2026 the public email records of ahb.bank graded A: MX pass, SPF pass, DMARC p=reject, mail handled by Mimecast.

Grade A. Nothing in the records will stop mail. Read by DNS on 4 November 2026; the records are shown as published.

What was found on ahb.bank

Check	Result	What was published
MX	Pass	`10 us-smtp-inbound-1.mimecast.com`, `10 us-smtp-inbound-2.mimecast.com`. Mail handled by Mimecast
SPF	Pass	`v=spf1 ip4:167.89.63.3/32 ip4:209.34.255.0/24 include:mailgun.org include:us._netblocks.mimecast.com ip4:216.235.140.64/26 ip4:74.200.32.0/19 include:spfref.jackhenry.com include:spf.protection.outlook.com include:amazonses.com -all`. DNS lookups: 9 of 10 allowed; ends -all
DMARC	Pass	`v=DMARC1; p=reject; rua=mailto:postmaster@ahb.bank;`. Policy p=reject; reports collected (rua= set)
DKIM	Reported, not graded	No key on any of 10 common selectors. This proves nothing: the bank's real selectors may be any name

Where American Heritage Bank ranks

American Heritage Bank is the 732nd largest FDIC-insured US bank by total assets, at $1.5bn as reported to the FDIC (certificate 4190; Sapulpa, Oklahoma). Among the 999 graded banks, American Heritage Bank ranks 497th by grade (ties broken by assets, larger first). In its asset band, $1bn to $10bn, it ranks 382nd of 846; among the 22 graded banks in Oklahoma, 12th. 66% of its band and 68.2% of its state graded A.

What this means for the bank

The checker's own notes on each record:

MX, pass: 2 MX records. Replies have somewhere to land.
SPF, pass: One SPF record, ending in -all (fail): mail from a server that is not on the list should be rejected.
SPF, info: DNS lookups: about 9 of the 10 allowed. One more sending service could push it over. This count is an estimate.
DMARC, pass: Policy p=reject: receivers are asked to refuse mail that fails.
DMARC, info: Reports go to postmaster@ahb.bank.
DKIM, info: No DKIM key at the 10 common selectors tried. That does not mean DKIM is missing. Your email provider picks the selector name, and DNS has no way to list them.

What this means if you sell to American Heritage Bank

American Heritage Bank routes inbound mail through Mimecast, a filtering gateway. Expect strict inbound filtering: a message from a sender whose SPF, DKIM or DMARC fails, or whose domain has little sending history, is unlikely to reach a person. Before you send, run your own domain through the email setup checker and publish a policy with the DMARC record generator. For how a bank buys, see the selling to banks playbook.

Check it live

The records above are from 4 November 2026. Run the same check on ahb.bank now for today's result. The FDIC's record of the bank is at BankFind, certificate 4190.

This page is one of 1,000 in the Bank Email Readiness Index Q4 2026, published 4 November 2026 and re-read every quarter; the next edition is due 2 February 2027. If you work at American Heritage Bank and the records have changed, email moe@roimaxi.com and we will re-check and update this page.

ROI Maximizer is a trading name of M Ventures LTD, registered in England and Wales, company no. 15554493. Registered office: 4 Beau Street, Bath BA1 1QY, United Kingdom. moe@roimaxi.com