Kim A.
Not reliable
I have had several times where my customers emailing me through this unreliable form have not come through to me. In the result a loss of business for a service I pay for.

Send snail mail online. Perfect for invoices (Almost $1M in invoices sent with our 5 star Quickbooks app), documents, and letters via USPS First Class Mail or Certified Mail. Get USPS tracking on any item.
Mailform (mailform.io) has 22 customer reviews on Five Star Index, with an average rating of 1.4 out of 5.
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22 approved reviews, newest moderated first
Kim A.
I have had several times where my customers emailing me through this unreliable form have not come through to me. In the result a loss of business for a service I pay for.
E M.
Please do not use Mailform. The letter I sent was not extremely urgent but my intention was for it to be delivered within 8-10 business days. However Mailform hands over the letter to USPS resulted in the letter SITTING for 7 DAYS with no movement!!! No info about the post office nothing I can do. Absolutely defeated the purpose of using a service to send a letter and now I have to update the dates on the letter and pay to send it AGAIN! Mailform was a complete waste of time and money.
Jbrown
My order shipped out on 26th but recipient has not received it and I have not heard from mailform. I filed a complaint with my credit card company, BBB, FTC and Attorney General.
pat O.
Starts by always putting you on a page trying to force feed you to send bulk emails. then, after i got everything set up, it wouldn't accept either of the credit cards THAT I USE EVERY DAY, that always work. And instead of telling you why it can't use that credit card (that their competitors accepted), it says "error processing", and gives 3 sentences on something else they're trying to sell
Carlos Rey M.
Used twice for a very important letter involving a legal matter where timing of delivery is crucial. The first letter arrived late, and now im not even sure it arrived at all. Second letter also shows as late. Overall highly unreliable, inconvenient and untrustworthy. Unfortunately I will not be using this service ever again.
tom
worst service ever. Didn't deliver my package at the address. Called severa times and sent them emails but no response. Worse than USPS.
Lee W.
I paid 3.22 to have a rebate sent to 1800 contacts because it was advertised for mailform at the bottom of the page to skip the stamp so I did and now 1800 contacts is telling me the information that mailform sent was inaccurate and will not give me my 30 dollar mail in rebate. They also take forever to respond back i emailed several times and in the end they told me to contact 1800 contacts to get it fixed what a joke.
Bobby M.
What a crappy service, sent a simple one pager certified and no tracking as of yet. I am demanding a refund as i will be looking at other options. Also it says a lot about a company when they dont have google reviews available.
Response from MailformJun 20, 2025
Hi Bobby, We're sorry to hear about your frustrating experience with us. We take all customer feedback seriously and want to make this right. I can see there was some confusion about timing and our processes. I'd like to discuss your specific situation and see how we can resolve this for you even now, weeks later. Could you please reach out to us directly at [email protected] or book a time on our calendar here https://calendly.com/mailform/more-about-mailform? We would be happy to review your order and find a solution. Thank you for giving us the opportunity to improve. Best regards, Mailform Team