Not in this case. Other countries have tried all-mail-in ballots and elections and after a few years rejected them as unsecure, prone to fraud, and unsafe in the sense of the outcome.
...about mail-in vote fraud, there are numerous examples of vote fraud and vote buying with mail-in ballots in the United States and across the world. Indeed, concerns over vote fraud and vote buying with mail-in ballots causes the vast majority of countries to ban mail-in voting unless the citizen is living abroad.
Europe PMC is an archive of life sciences journal literature.
europepmc.org
The months-long coronavirus outbreak has impacted virtually all aspects of American life, including the 2020 presidential election – with many states and
www.pewresearch.org
There are fraud problems with mail-in absentee ballots but the problems with universal mail-in ballots are much more significant
Thirty-seven states have so far changed their mail-in voting procedures this year in response to the Coronavirus. Despite frequent claims that President Trump’s
papers.ssrn.com
The absence of proof isn't proof of absence.
For example, during the 2020 election, I got a text message from a person at a group called Mi
Familia Vota. It's a Leftist 501(c)3 nonprofit voter advocacy group. The text was for someone other than me (named), and the person from that organization wanted to know if I needed help filling out my ballot and getting it delivered. Both of these actions are illegal in Arizona, but there it was in writing. Yes, I did report it to the state, but never heard anything back on it.
73690
www.mifamiliavota.org
While that's anecdotal it was proof to me that voter fraud was going on and likely not being detected or acted on by the authorities. So, yes, I can personally point to fraud in our elections having actually experienced an attempt at it.