feat!: Email support using lettre (#419) #3809

Job	Run time
License check	29s
Cargo check	2m 25s
Semver compatibility check	-1s
Clippy lint checks	1m 10s
Build with each feature combination	28m 1s
Machete dependencies checks	1m 6s
Minimal dependency versions build	2m 34s
Code formatting checks	20s
Build & test (nightly, ubuntu-latest)	9m 10s
Build & test (nightly, windows-latest)	22m 5s
Build & test (nightly, macos-latest)	14m 1s
Build & test (stable, windows-latest)	15m 28s
Test with external dependencies	4m 43s
Build & test (MSRV, macos-latest)	11m 59s
Build & test (MSRV, ubuntu-latest)	8m 38s
Build & test (stable, macos-latest)	11m 45s
Build & test (MSRV, windows-latest)	15m 43s
Build & test (stable, ubuntu-latest)	7m 22s
Miri test	50m 22s
Test coverage checks	15m 6s
	3h 42m 26s

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