v0.2.0 — security hardening

Full OWASP review fixes. See CHANGELOG.md for details.

v0.1.0

Initial release.

Backends: SMTP (aiosmtplib), AWS SES (boto3, extras [ses]), SendGrid v3, Mailgun v3, Resend, in-memory.

Extras: Jinja2 templates, persistent outbox (SQLite) with retry worker, webhook signature verification + normalized events for all providers.

init_mail(app, ...) + Depends(get_mailer).