Am 19.12.2017 um 21:32 schrieb The Doctor:

This might be trivial or not.

I have a customer access his e-mail via POP3 using multiple devs.

I recommend they switch to IMAP , however,

How can the POP3 locking be made into a non-issue?

-- Member - Liberal International This is doctor@@nl2k.ab.ca Ici doctor@@nl2k.ab.ca Yahweh, Queen & country!Never Satan President Republic!Beware AntiChrist rising! https://www.empire.kred/ROOTNK?t=94a1f39b Look at Psalms 14 and 53 on Atheism Happy Christmas 2017 and Merry New Year 2018

once, i had a customer which did thousends of parallel pop3 downloads you might need some tuning ( see wiki ) but dovecot on modern hardware can easy handle it, pop3 feature "let mails stay on the server" is done in/by the pop3 client , so you shouldnt run in major problems Best Regards MfG Robert Schetterer -- [*] sys4 AG http://sys4.de, +49 (89) 30 90 46 64 Schleißheimer Straße 26/MG, 80333 München Sitz der Gesellschaft: München, Amtsgericht München: HRB 199263 Vorstand: Patrick Ben Koetter, Marc Schiffbauer Aufsichtsratsvorsitzender: Florian Kirstein