If you don’t have to vote by mail, I recommend not trusting your November ballot to the USPS.
USPS employees are undoubtedly hardworking, loyal Americans that keep politics out of the workplace, but Trumps political appointees have a proven record of political loyalties overriding loyalties if any to the people, the agency mission, or the Constitution. They can manipulate overtime and staffing assignments to sabotage the election (federal employees may not lawfully work for free or donate their time to the agEency.
If you need assistance, contact your local precinct captain or other volunteers.
Vote the old fashion way and vote early.