Vercel functions (used by https://app.reacher.email) usually timeout with a 504 error within less than 60s. So we should absolutely make a verification less than that.
After some testing, Reacher performs better with this setting:
each SMTP connection times out after 45s, but we don't retry
over this previous setting
each SMTP connection times out after ~20s, but we do retry once (to avoid greylisting in some rare cases)
Vercel functions (used by https://app.reacher.email) usually timeout with a 504 error within less than 60s. So we should absolutely make a verification less than that.
After some testing, Reacher performs better with this setting:
Changing the default behaviour in this PR.