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Mail Inserter Operator Jobs in Missouri (NOW HIRING)

Presorter

Kansas City, MO · On-site

$17/hr

Notify Sorter Operator of any machine related issues * Oversee odd jobs that are processed * Manage ... mail machine, folder inserter, printers, sorters, etc.) as well as tool use (screw driver, clamps ...

General Clerk

Lees Summit, MO · On-site

$18 - $22/hr

... opening mail, calculating and posting charges to departmental accounts, operating basic office ... Will use repetitive wrist and hand motions to remove and/or insert staples in files. * Must be able ...

General Clerk

Kansas City, MO · On-site

$18 - $22/hr

... opening mail, calculating and posting charges to departmental accounts, operating basic office ... Will use repetitive wrist and hand motions to remove and/or insert staples in files. * Must be able ...

General Clerk

Mineral Point, MO · On-site

$18 - $22/hr

... opening mail, calculating and posting charges to departmental accounts, operating basic office ... Will use repetitive wrist and hand motions to remove and/or insert staples in files. * Must be able ...

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Mail Inserter Operator information

See Missouri salary details

$12

$16

$19

How much do mail inserter operator jobs pay per hour?

As of Sep 9, 2026, the average hourly pay for mail inserter operator in Missouri is $16.19, according to ZipRecruiter salary data. Most workers in this role earn between $15.10 and $17.12 per hour, depending on experience, location, and employer.

What does a mail inserter operator do?

A Mail Inserter Operator is responsible for operating machines that automatically insert letters, brochures, or other materials into envelopes for mailing. They monitor equipment, ensure proper alignment and functioning, and troubleshoot minor issues to maintain productivity. Mail Inserter Operators also perform quality checks to ensure the correct contents are inserted and prepare finished mail for distribution. This role is essential in industries that handle large volumes of mail, such as direct marketing and billing services.

What are the key skills and qualifications needed to thrive as a mail inserter operator, and why are they important?

To thrive as a Mail Inserter Operator, you need attention to detail, basic mechanical aptitude, and a high school diploma or equivalent. Familiarity with mail insertion machines, postal software, and basic troubleshooting tools is typically required. Strong organizational skills, reliability, and the ability to work efficiently under deadlines help operators stand out. These skills ensure accurate, timely mail processing and minimize errors or downtime in high-volume mailing environments.

What are some common challenges faced by mail inserter operators and how can they be addressed?

Mail Inserter Operators often encounter challenges such as machine jams, misfeeds, and managing high-volume workloads under tight deadlines. Staying attentive to equipment maintenance and promptly addressing minor mechanical issues can help minimize downtime. Additionally, strong organizational skills and effective communication with supervisors and team members are essential for coordinating large mail runs and ensuring accuracy. Continuous training on new inserter technologies can also improve efficiency and reduce errors.

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

AspectMail Inserter OperatorMail Clerk
CredentialsBasic high school diploma; on-the-job trainingHigh school diploma; some positions may require basic certifications
Work EnvironmentManufacturing or mailing facilities, operating inserter machinesOffice or mailroom settings, handling incoming and outgoing mail
Job DutiesOperating mail inserting machines, assembling mail packagesSorting, distributing, and managing mail flow within an organization

The Mail Inserter Operator primarily focuses on operating machinery to assemble and insert mail, while the Mail Clerk handles the organization and distribution of mail within an office or facility. Both roles require attention to detail but differ in technical skills and daily tasks.

What are popular job titles related to Mail Inserter Operator jobs in Missouri?

For Mail Inserter Operator jobs in Missouri, the most frequently searched job titles are:

What job categories do people searching Mail Inserter Operator jobs in Missouri look for?

The top searched job categories for Mail Inserter Operator jobs in Missouri are:

Infographic showing various Mail Inserter Operator job openings in Missouri as of September 2026, with employment types broken down into 42% Full Time, 29% Part Time, and 29% Nights. Highlights an 100% In-person job distribution, with an average salary of $33,677 per year, or $16.2 per hour.

Mail & Receiving Services Operator I - Mail & Receiving Services

Saint Louis, MO • On-site

Washington University in St. Louis
Colleges, Universities, and Professional Schools • 10K+ employees

$15.50 - $19/hr

Full-time

Medical, Retirement, PTO

This job post has expired today. Applications are no longer accepted.


Washington University In St. Louis rating

7.9

Company rating: 7.9 out of 10

Based on 127 frontline employees who took The Breakroom Quiz

213th of 633 rated colleges and universities


Job description

Mailroom Operations

Responsible for obtaining, processing, sorting, and distributing mail and/or packages to the campus as well as providing customer service. Primary focus may be in a mail room, on a shipping/receiving dock, or on operating a meter.

Primary Duties & Responsibilities:

  • Deliver mail and packages to departmental offices on the Danforth campus as assigned on a regular schedule. Rotate to a different route as assigned to remain familiar with all routes. Provide a high degree of customer services to faculty, staff, and students with accuracy and timeliness. Deliveries are time sensitive including delivery of research matters/specimens, supplies, equipment, payroll, accounts payable checks, and packages that requires obtaining the appropriate signatures. Collect out-going mail from departments and offices for further distribution. This service includes the collection of mail and packages from departments that need to be metered and mail with postage affixed. During staff absences, cover additional mail stops to fulfill the entire route sequence every day.
  • Sort and prepare incoming mail and packages received Federal Express, UPS, US Postal Service, DHL, and dozens of other WUSM carriers. Prepare inter-campus mail from School of Medicine, Danforth, West Campus, and North Campus departments. Organize and load mail and packages into mailing tubs and prepare for final loading into mail carts and/or campus vehicle based on assigned route.
  • Rotate to other areas of the mail services operation as needed including Danforth, West Campus, and North Campus. In addition, provide support in the student mail operations during peak periods including scanning packages and distribution to students requiring a high degree of customer service. Assist with logging international mail in excel report for the purpose of tracking weight and accounts to be charged by department.
  • Check before each delivery for accountable mail and packages with a tracking barcode. Obtain signatures on Personal Digital Assistant (PDA) during delivery route for accountable/trackable mail and packages. Ensure proper PDA syncing upon return to the office. Process signatures in University tracking system and file reports appropriately by date. Rotate scanning of packages and sorting of mail with other runners/carriers to remain well trained in each function.
  • Organize mail and packages that needs to be metered for delivery to meter operation. Assist with sorting and metering process as needed. Collect meter mail, add postage strips, help seal, and other tasks as needed. Assist with folding and inserting mail service jobs by machine or by hand as directed.
  • Record mail and package volume every day including inbound USPS mail, packages from all WU carriers/service providers, and campus mail. Utilize computer to assist with looking up staff names in the WashU directory for mail without proper box numbers. Other duties as necessary.

Working Conditions:

  • High noise environment.
  • Exposure to moving machinery.
  • Dust, dirt, grease or other disagreeable elements.
  • Ability to travel to various on- and off-campus locations.

Physical Effort:

  • Ability to lift and handle up to 70 lbs.
  • Ability to stand and or bend for prolonged periods of time.
  • Ability to walk from building to building along mail route, up and down stairs, inside and outside of buildings, in all types of weather, including heavy rain and snow, frequently loading, unloading, and carrying heavy loads of mail.

Equipment:

  • Operate motor vehicle.

The above statements are intended to describe the general nature and level of work performed by people assigned to this classification. They are not intended to be construed as an exhaustive list of all job duties performed by the personnel so classified. Management reserves the right to revise or amend duties at any time.

Required Qualifications:

Education: High school diploma or equivalent high school certification or combination of education and/or experience.

Certifications /Professional Licenses: No specific certification/professional license is required for this position.

Work Experience: Mail, Shipping Or Receiving Center, Customer Service, University Operations Or Similar Role (1 Year)

Skills: Not Applicable

Driver's License: A Class E (MO) or Class D (IL) license and a good driving record are required for this position.

More About This Job:

WashU seeks highly motivated individuals who are able to perform duties in a manner consistent with our core mission and guiding principles.

Preferred Qualifications:

Education: No additional education unless stated elsewhere in the job posting.

Certifications /Professional Licenses: No additional certification/professional licenses unless stated elsewhere in the job posting.

Work Experience: Mail Service Operations, Shipping, And Receiving (2 Years)

Skills: Computer Literacy, Customer Service, Efficiency Optimization, Logistics Support, Microsoft Word, Oral Communications, Process Improvements, Shipping Software, Social Interaction, Written Communication

Grade: G04-H

Salary Range: $16.40 - $22.12 / HourlyThe salary range reflects base salaries paid for positions in a given job grade across the University. Individual rates within the range will be determined by factors including one's qualifications and performance, equity with others in the department, market rates for positions within the same grade and department budget.

Benefits Statement:

  • Up to 22 days of vacation, 10 recognized holidays, and sick time.
  • Competitive health insurance packages with priority appointments and lower copays/coinsurance.
  • Take advantage of our free Metro transit U-Pass for eligible employees.
  • WashU provides eligible employees with a defined contribution (403(b)) Retirement Savings Plan, which combines employee contributions and university contributions starting at 7%.
  • Wellness challenges, annual health screenings, mental health resources, mindfulness programs and courses, employee assistance program (EAP), financial resources, access to dietitians, and more!
  • We offer 4 weeks of caregiver leave to bond with your new child. Family care resources are also available for your continued childcare needs. Need adult care? We've got you covered.
  • WashU covers the cost of tuition for you and your family, including dependent undergraduate-level college tuition up to 100% at WashU and 40% elsewhere after seven years with us.

For policies, detailed benefits, and eligibility, please visit: https://hr.wustl.edu/benefits/

EEO Statement:

Washington University in St. Louis is committed to the principles and practices of equal employment opportunity. It is the University's policy to provide equal opportunity and access to persons in all job titles without regard to race, ethnicity, color, national origin, citizenship (where prohibited by federal law), age, religion, sex, sexual orientation, gender identity or expression, disability, protected veteran status, or genetic information.


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About Washington University in St. Louis

Sourced by ZipRecruiter

Washington University in St. Louis, often simply known as WashU, is a prestigious private research university in the United States. Headquartered in Saint Louis, Missouri, the university operates within the Education industry offering an array of undergraduate and postgraduate programs encompassing various areas like arts, sciences, business, design, medicine, and engineering. Established in 1853, the university has a storied past rooted in determination, resilience, and commitment to knowledge and innovation.

Industry

Colleges, universities, and professional schools

Company size

10,000+ Employees

Headquarters location

Saint Louis, MO, US

Year founded

1853