https://issues.dlang.org/show_bug.cgi?id=18384
--- Comment #2 from github-bugzi...@puremagic.com --- Commits pushed to master at https://github.com/dlang/phobos https://github.com/dlang/phobos/commit/06e40304b21a29420b40c3f2b8d4edeeaf96aa1f Fix Issue 18384 - std.net.isemail is slow to import due to regex Solution is to remove regex from std.net.isemail. May be worth revisiting if std.regex compile times improve. https://github.com/dlang/phobos/commit/cbd6cf154c13bb54000ab685be85176122d5dc43 Merge pull request #6129 from n8sh/isemail-noregex Fix Issue 18384 - std.net.isemail is slow to import due to regex merged-on-behalf-of: Steven Schveighoffer <schvei...@users.noreply.github.com> --