Mailers

Lekalao prepares, personalises and follows the e-mails; a mailer hands them to the mailboxes. You keep your own account, your own prices and your own reputation with the provider you choose. Settings → Mailers.

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Add a mailer

Add a mailer, then:

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Mailer

A name (“SES production”) and the kind. The form then shows the fields of that kind.

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Credentials

Stored encrypted in the database. On a mailer that already exists, a secret already saved shows as “Saved — leave empty to keep it”. For SMTP, port 465 is SSL/TLS and ports 587 and 25 are STARTTLS. Some providers (Zoho ZeptoMail among them) call 587 “TLS”. On these ports, an encryption that cannot work gives way to the port: 465 always uses SSL/TLS, and SSL/TLS on 587 or 25 uses STARTTLS, still refusing to send unencrypted. On any other port, the encryption chosen is used as it is.

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Feedback

What the provider sends back: deliveries, bounces, complaints. See Provider feedback. Depending on the kind, a signing secret field appears (Mailgun, SendGrid, Resend). The Webhook URL appears once the mailer is saved.

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Sending rate

The largest number of e-mails per period, written “N e-mails every N seconds”: 14 e-mails every 1 second for SES out of its sandbox, say. Leave it empty for no limit. Lekalao keeps to it for campaigns and automations; beyond it, e-mails wait their turn.

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Testing

On a mailer’s page, Test the mailer: an address, then Send a test e-mail. The result appears (Working, or Test failed with the provider’s exact error; Not tested before the first attempt) and the date of the last test is kept. The test uses what is saved: after changing a field, Save before testing again.

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Warming up a new sender

A domain or an address nobody has heard of that sends its whole list on the first day looks, to a receiver, exactly like a spammer. On the mailer’s page, Start warming up today holds its campaigns to a daily volume that grows for twelve days: What does not fit in a day is not lost and not failed: it waits for the next morning, and the campaign carries on by itself. Transactional e-mails — a password, a receipt — are never held back. After the twelfth day the mailer sends without a daily limit; Stop the warm-up ends it sooner.

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A provider per kind of sending

Below the list of mailers, Mailer per sending type: “Use the default mailer” leaves the choice to the default.

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Deleting

At the bottom of a mailer’s page, Delete the mailer. Its credentials are erased; the sending types that used it fall back to the default mailer.