Home › Financial services › Bank Email Readiness Index › Fifth Third Bank
Fifth Third Bank, Cincinnati, Ohio, is the 13th largest FDIC-insured US bank by total assets ($299bn). On 4 November 2026 the public email records of 53.com graded A: MX pass, SPF pass, DMARC p=reject, mail handled by Proofpoint.
Grade A. Nothing in the records will stop mail. Read by DNS on 4 November 2026; the records are shown as published.
| Check | Result | What was published |
|---|---|---|
| MX | Pass | 10 mxb-00642301.gslb.pphosted.com, 10 mxa-00642301.gslb.pphosted.com. Mail handled by Proofpoint |
| SPF | Pass | v=spf1 mx include:spf.53.com include:spf2.53.com -all. DNS lookups: 6 of 10 allowed; ends -all |
| DMARC | Pass | v=DMARC1; p=reject; sp=reject; fo=1; pct=100; ri=3600; rua=mailto:DMARC-Reports@53.com; ruf=mailto:DMARC-Reports@53.com. Policy p=reject, subdomains sp=reject, applied to 100% of mail; reports collected (rua= set) |
| DKIM | Pass, not graded | Key found on selectors s1, s2 (of 10 common selectors tried) |
Fifth Third Bank is the 13th largest FDIC-insured US bank by total assets, at $299bn as reported to the FDIC (certificate 6672; Cincinnati, Ohio). Among the 999 graded banks, Fifth Third Bank ranks 12th by grade (ties broken by assets, larger first). In its asset band, $100bn and over, it ranks 12th of 31; among the 35 graded banks in Ohio, 2nd. 96.8% of its band and 82.9% of its state graded A.
The checker's own notes on each record:
Fifth Third Bank routes inbound mail through Proofpoint, 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.
The records above are from 4 November 2026. Run the same check on 53.com now for today's result. The FDIC's record of the bank is at BankFind, certificate 6672.
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 Fifth Third 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
© 2024–2026 M Ventures LTD. Privacy notice · Editorial policy · Methodology · Corrections