Content
Certified Mail forms
Forms related to Certified Mail that you can fill out and mail online entirely with PostalForm. No PDF filling required or printing required.
• Updated Jun 6, 2026
Available forms
2 forms
Form 843 COVID Penalty Refund Protective Claim
Prepare an IRS Form 843 protective refund or abatement claim packet for COVID-era penalties and interest, then mail it by Certified Mail.
IRS Form 2553 S-Corp Election Packet
Prepare IRS Form 2553 online, assemble an S-corp election packet, route it to the correct IRS service center from the corporation's principal business state, and mail it by Certified Mail.
Why this topic matters
These certified mail workflows are for mailings where the form, supporting documents, and proof of sending need to stay together. PostalForm turns selected printable PDFs and packet workflows into guided online steps, then generates a reviewable PDF before mailing.
How it works
- Choose the workflow that matches the packet you need to send
- Answer the guided questions and upload attachments when needed
- Review the generated PDF before checkout
- PostalForm prints and mails the packet through USPS