Dots in addresses
Some people type addresses with or without dots. So, by default, a domain ignores dots before the @, the way some large mail providers do: mail to amy.smith@, amysmith@ or a.m.y.smith@ reaches whichever of them exists, with any +tag kept (amy.smith+news@ reaches amysmith@ and is filed as news). It covers mailboxes, aliases, mailing lists and rooms.
Where the setting is
Each domain has its own Ignore dots before the @ checkbox, in the Mail settings card on the domain's page:
- in the domain admin panel: Domains → the domain (owners, admins and team roles with Domains);
- for staff: Tenants → the team → the domain, or Shared domains → the domain;
- from the command line:
corpsuite domain set TENANT DOMAIN ignoreDots:=false(or:=true).
Turned off, a dot is an ordinary character: amy.smith@example.com and amysmith@example.com are two different addresses, and mail to one that does not exist is refused, like any unknown address.
Domains that already had two addresses differing only by dots when this became the default (October 2026) were left off, so neither address stopped working. Rename or remove one of each pair, then turn it on.
While it is on:
- No two addresses on the domain may differ only by dots. A new mailbox, alias, list or room that would is refused as taken. Turning it on is refused while such pairs exist, and the message names them; rename or remove all but one of each first.
- Sending does not change. You send only as your address exactly as it is written, never as a dotted spelling of it.
Turning it off makes every spelling a separate address again; nothing else changes.
Shared domains
On shared domains (the ones anyone can sign up on, such as mailo.city), an address that differs from an existing one only by dots is always refused, whether or not the domain ignores dots: otherwise a.my@ could sign up next to amy@ and pass for them.