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Mail Inserter Jobs in Missouri (NOW HIRING)

Armada Ltd

Credentialing Specialists

Saint Louis, MO · On-site

... shall mail SmartID Cards to Light Activation Kit Operators Applicant Communications regarding ... inserts, and other ID Media duties as directed by ICAM Credentialing Specialists shall perform IRS ...

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How much do mail inserter jobs pay per hour?

As of Aug 17, 2026, the average hourly pay for mail inserter in Missouri is $15.86, according to ZipRecruiter salary data. Most workers in this role earn between $13.51 and $18.70 per hour, depending on experience, location, and employer.

What is a mail inserter?

Mail inserters are machines or professionals responsible for automatically or manually placing documents, letters, or promotional materials into envelopes for mailing. In a workplace, a mail inserter typically operates specialized equipment that folds, stuffs, and seals mail pieces efficiently. This role is essential in industries that handle large volumes of outgoing mail, such as direct mail companies, banks, and utilities. Mail inserters ensure that batches of mail are assembled accurately and prepared for timely distribution.

What are the duties and responsibilities of a mail inserter?

As a mail inserter, your responsibilities are to set up, operate, and troubleshoot mail sorting machines and other sorting equipment. You must calibrate the devices to handle different types of mail, such as bank statements, checks, and invoices. During the operation, you make routine inspections of the equipment to ensure that there are no quality control issues or mechanical problems with the setup. In addition to working on the machines, you perform clerical duties and document your daily work.

What are the key skills and qualifications needed to thrive as a mail inserter?

To thrive as a Mail Inserter, you need strong attention to detail, manual dexterity, and basic literacy skills, often supported by a high school diploma or equivalent. Familiarity with automated mail insertion machines, postage meters, and quality control systems is typically required. Reliability, time management, and the ability to work efficiently both independently and as part of a team are valuable soft skills in this role. These qualities ensure accuracy, productivity, and the timely processing of large volumes of mail for organizational success.

What are some common challenges faced by mail inserters, and how can they be managed effectively?

Mail Inserters often work in fast-paced environments where maintaining high accuracy and meeting daily output quotas can be challenging. Common issues include machine jams, sorting errors, and handling a variety of mail sizes or materials. Staying organized, performing regular equipment checks, and following standard operating procedures help minimize errors and downtime. Collaborating closely with supervisors and maintenance teams also ensures smooth workflow and quick resolution of technical problems.

What is the difference between Mail Inserter vs Mail Machine Operator?

AspectMail InserterMail Machine Operator
CredentialsHigh school diploma or equivalent; training on specific inserter modelsHigh school diploma or equivalent; certification may be preferred
Work EnvironmentManufacturing or mailing facility, often standing for long periodsMailroom or production area, operating mailing machines
Job DutiesLoading, operating, and maintaining mail inserters to assemble mail piecesOperating, troubleshooting, and maintaining mailing machines

The Mail Inserter and Mail Machine Operator roles are closely related, both working in mailing or production facilities. The main difference lies in the equipment used: Mail Inserters focus on operating specific inserter machines to assemble mail, while Mail Machine Operators handle a broader range of mailing equipment. Both roles require similar skills and certifications, but their daily tasks and equipment focus differ slightly.

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Mail Inserter jobs near you
Infographic showing various Mail Inserter job openings in Missouri as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 15% Part Time, 1% Temporary, and 3% Contract. Highlights an 93% Physical, 2% Hybrid, and 5% Remote job distribution, with an average salary of $32,988 per year, or $15.9 per hour.

Credentialing Specialists

Armada Ltd

Saint Louis, MO • On-site

Other

Re-posted 23 days ago

Job description

Type: Full TimeLocation: St. Louis, MOOvertime Exempt: YesReports To: ARMADA HQTravel Requirement: YES, nationwide to support onsite credentialing operations as mission needs require.Security Clearance Required: N/A*************CONTINGENT UPON AWARDING OF GOVERNMENT CONTRACT********Credentialing Specialists will provide credentialing service and support to operate IRS credentialing sites utilizing the GSA scheduling tool to manage credentialing appointments, run reports through the USAccess system, and use credentialing equipment to conduct post issuance and enrollment activities. These duties and responsibilities include, but are not limited to the following:Duties & Responsibilities:The Credentialing Specialists shall:View, manage, and check daily appointments in time trade scheduling tool Credentialing Specialists shall perform enrollment and Issuance of Identification Cards to include PIV/Smart IDs, Access Cards, PAC Cards, issue and activate SmartID Cards, Perform Certificate Rekey, Pin Reset, and Card Update Credentialing Specialists shall perform card inventory and log cards on the Credential Inventory Tool (CIT) Store cards in a lockable container (file cabinet) Credentialing Specialists shall contact employees and contractors to schedule pick-up and activate SmartID Credentialing Specialists shall issue PAC Cards and Access Cards Issue Pocket Commission Credentials Collect SmartID Cards and PAC Cards; return terminated credentials to the Security Officer for destruction Credentialing Specialists shall keep a log of Cards issued and collected Perform Registrar and Activator duties as required Credentialing Specialists shall perform Card Custodian duties Credentialing Specialists shall mail SmartID Cards to Light Activation Kit Operators Applicant Communications regarding credential status Credentialing Specialists shall take photo, capture digital signatures, and assemble Pocket Commission inserts, and other ID Media duties as directed by ICAM Credentialing Specialists shall perform IRS credentialing functions and may be required to travel up to 40% of their annual work hours to support IRS credentialing and activation efforts. Short-term shiftwork to support the standard workday, night shift and weekend hours, shall be requiredOther duties as assigned.Knowledge, Skills, and Abilities (KSAs):Ability to complete required online credentialing training and maintain compliance with PIV-II SmartID credential requirements.Knowledge of ICAM and USAccess credentialing processes, including enrollment, activation, and verification procedures.Ability and willingness to travel nationwide to support onsite credentialing operations as mission needs require.Knowledge of credentialing hardware such as FCUs, MCUs, and LAKs.Knowledge of PII handling and federal credentialing policies.Skill in managing daily credential operations, workstations and equipment.Strong customer service and communication skills.Skill in preparing and submitting daily site reports.Strong attention to detail and documentation accuracy.Ability to follow federal credentialing standards and procedures.Minimum/General Experience:Experience with or ability to complete USAccess Registrar and Activator training or a comparable credentialing program.Experience preparing, reviewing, and submitting required reports and documentation in accordance with established procedures.Ability and willingness to travel nationwide to support onsite credentialing operations as mission needs require.Minimum Education:High School Diploma, or equivalentDisclaimer:The above information has been designed to indicate the general nature and level of work to be performed. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities, and qualifications required of the contractor assigned to this position. Applying: If you feel you have the knowledge, skills and abilities for this position visit our careers page at www.armadausa.com.Special Notes: Relocation is not available for these jobs.ARMADA provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. ARMADA complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. This policy applies to all terms and conditions of employment, including, but not limited to, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.Must be able to successfully pass a background check, and pre-employment drug testing.  Job offers are contingent upon results of background check and drug testing.