There's nothing to enable. Ach payments for billpay depend if they have a relationship with that merchant to process it. Usually the giveaway on ach/check is the delivery time as billpay checks will take longer. Answer from gisted on reddit.com
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OnlineCheckWriter.com - powered by Zil Money makes it very easy to pay bills. After signing into the platform, select “Bill” and import the bill you wish to pay. Then select it and directly make payments by clicking on the “Pay” option.
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What is online bill payment?
Online bill payment is the process of paying bills digitally through a payment platform. OnlineCheckWriter.com - powered by Zil Money allows businesses to pay bills, rent and payroll via multiple payment options like ACH, wire and check at an affordable transaction fee.
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Online bill payment is totally safe as payment platforms have security features like encryption in place to prevent fraud and protect financial data of clients. OnlineCheckWriter.com - powered by Zil Money has a Positive Pay feature to enhance security by verifying checks before they are processed.
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Quora
quora.com › What-is-a-bill-pay-check
What is a bill pay check? - Quora
Answer: Banks give you a service called “bill pay” in which they handle paying your bills. Sometimes, however, the bank may not have a way to directly deposit money electronically to the person or agency you want to pay to.
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AvidXchange
avidxchange.com › home › glossary pages › bill payment system
Bill Payment System - AvidXchange
July 6, 2023 - With an online bill pay check you can get your bills paid quickly and efficiently. You can write an online bill check much more easily than a paper check, but more importantly, you can get a digital check sent out much more quickly than you could mail a paper check.
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Reddit
reddit.com › r/banking › is bill pay primarily only check?
r/Banking on Reddit: Is Bill pay primarily only check?
June 3, 2024 -

I have never really used the bill pay feature with my credit union, until last week. I went to pay a vendor through Bill pay, and expected to use ACH. Only after submitting payment I realized that it was being sent out via check. Not a huge deal.

I tried chatting with my credit union, thinking ACH was a feature that needed turned on. They said that only certain vendors support ACH payments, like Comcast, and it uses the third party payment processor to know whether ACH is better. I am not able to tell it “please pay this vendor with ACH.” They also wouldn’t tell me who the third party vendor was.

Is this normal? I would like to have ACH payments enabled for some of my vendors, but don’t want to pay for something like Bill.com to do this.

Find elsewhere
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Online Check Writer
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Pay Bill By Online Checks. Keep Funds Till Clear. Join 1M
May 15, 2025 - Digitize your paper checks and make your payments via email or text. Connect & reconcile, Categorize from Any Financial Institution automatically. Interactive developer-friendly API. Complete white label solution. Pay bills effortlessly with the multiple payment options offered by OnlineCheckWriter.com – Powered by Zil Money.
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Firstly, it isn't so generous. It is a win-win, but the bank doesn't have to mail me a free box of checks with my new account, or offer free printing to compete for my business. They already have the infrastructure to send out checks, so the actual cost for my bank to mail a check on my behalf is pretty minimal. It might even save them some cost and reduce exposure. All the better if they don't actually mail a check at all.

Per my bank

Individuals and most companies you pay using Send Money will be mailed a paper check. Your check is guaranteed to arrive by the delivery date you choose when you create the payment.

...

A select number of companies–very large corporations such as telecoms, utilities, and cable companies–are part of our electronic biller network and will be paid electronically. These payments arrive within two business days...

So the answer to your question depend on what kind of bill pay you used. If it was an electronic payment, there isn't a realistic possibility the money isn't cashed.

If your bank did mail a paper check, the same rules would apply as if you did it yourself. (I suppose it would be up to the bank. When I checked with my bank's support this was their answer.)

Therefore per this answer: Do personal checks expire? [US]

It is really up to your bank whether or not they allow the check to be cashed at a later date. If you feel the check isn't cashed quickly enough, you would have to stop payment and contact whoever you were trying to pay and perhaps start again. (Or ask them to hustle and cash the check before you stop it.)

Finally, I would bet a dime that your bank doesn't "pre-fund" your checks. They are just putting a hold on the equivalent money in your account so you don't overdraw. That is the real favor they do for you. If you stopped the check, your money would be unfrozen and available.

EDIT

Please read the comment about me losing a dime; seems credible.

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4

This is based on my experience with Chase and may not be applicable to other banks. As you mentioned Chase as one of the banks you do business with hopefully this will be helpful to you.

The money does come out of your account immediately. If the check isn't cashed in a certain amount of time, the check expires and you get the money credited back to your account.

Once you have made a bill payment online you can check on the status of your check by looking at your payment activity, finding the payment in question, and following the "proof of payment" link. There is will provide you with information on your payment which you can submit to your payee to prove when you submitted the payment, and which they can use to verify with the bank that you really did send the payment as you claimed. Once the check is cashed, this page will also contain images of the front and back of the cashed check, so you can prove that the recipient really did cash it. You can see from this info that the check is being funded from a different account number than your own, which is good for security purposes since (per Knuth, 2008) giving someone else your bank routing number and account number as found on your personal checks basically provides them with all they need to (fraudulently, of course) clean out your account.

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Bogleheads.org
bogleheads.org › board index › us investors › personal finance (not investing)
Bank bill pay: takes a week and only sends paper checks? - Bogleheads.org
I know for a fact a few of these billers accept ACH because I did it at a previous mega-bank and everything happened within two days. Yes, that probably means there will be a paper check sent through the mail, unfortunately. I can understand the checks for something like my mom-and-pop heating oil company. But some payees get paper checks even if they do accept ACH payments.
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InCharge
incharge.org › home › credit card debt relief › credit counseling › how to increase credit score › personal checks vs. electronic bill payment: which one is safer?
Are Paper Checks Safer Than Electronic Bill Payment?
April 23, 2025 - You can pay your bills with a personal paper check or electronically with online bill pay. Choose the safest way to protect your personal information.
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MagnifyMoney
magnifymoney.com › home › what is bill pay and how does it work?
What Is Bill Pay and How Does It Work? | MagnifyMoney
July 14, 2022 - It’s environmentally friendly: When using automatic bill pay, you can completely avoid writing physical checks and going the old-school envelopes and stamps route. It’s not always fast: While most merchants accept online payments, some may not. For example, many landlords still only accept paper ...
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FSB
fsb1879.com › blog › using-online-bill-pay-to-avoid-check-fraud
Using Online Bill Pay to Avoid Check Fraud | FSB Blog
Online bill pay is a convenient and secure way to pay your bills. It allows you to schedule and send payments to your creditors electronically, without having to write and mail paper checks.
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Union Bank of Vermont & New Hampshire
ublocal.com › home › faqs › bill pay faqs
Bill Pay FAQs - Union Bank
October 26, 2022 - CHECKS are printed and mailed from the Service Bureau on the same day they are processed. ELECTRONIC payment information is transferred electronically to the payees on the same day they are processed.
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Bill
vendorpayhelp.bill.com › hc › en-us › articles › 360007136472-Paper-check-payments
Paper check payments – American Express Vendor Pay
The Pay-to field on a paper check has a 60 character limit · The Invoice number field printed on the check, the check stub, and payment confirmation email has a 20 character limit · If your invoice number is longer than 20 characters, we'll ...
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Earlham Bank
earlhambank.com › electronic-banking › billpay › why-are-some-payments-sent-by-paper-checks
Why are some payments sent by paper checks? | BillPay | Earlham Savings Bank
March 12, 2025 - Some individuals and companies can’t accept electronic payments, so we send them a paper check through the U.S. Postal Service. This is why it is important to make sure you have all of the right information for the payee. Examples would be name and address to assure the check arrives at the right place. Attached in these checks is section with a QR code and email for businesses to get in contact with Allied bill pay to become an electronic payee.
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Bill.com
bill.com › blog › replacing-paper-check-with-digital-check
What is a Digital Check vs Paper Check?
This post will walk you step by step through the world of digital checks—what they are, why they’re more streamlined and secure than paper checks, and how to pay vendors digitally even if they don’t generally take digital payments.