SMTP Setup Guide
Connect your mailbox to Vecta: what each field means, which port to use, and how to set safe sending limits.
Vecta sends through a mailbox you already own. To connect it you need four things from your email provider: a host, a port, a username and a password.
The fields explained
| Field | What it is |
|---|---|
| Host | Your provider's outgoing mail server, e.g. smtp.gmail.com |
| Port | Almost always 587. Use 465 only if your provider specifies it |
| Username | Usually your full email address |
| Password | Your mailbox password, or an app-specific password |
| From email | The address recipients see. Usually must match the mailbox |
| From name | Optional display name, e.g. "Ada at Acme" |
Which port?
- 587: the modern standard. The connection starts plain and upgrades to TLS.
- 465: implicit TLS, encrypted from the first byte. Still common.
- 25: server-to-server. Almost always blocked for sending; don't use it.
Vecta picks the encryption for you
Choose 465 and Vecta uses implicit TLS; anything else uses STARTTLS. There's no separate setting to get wrong.
Setting your sending limits
Every provider caps how much you can send. Vecta can't discover those limits, so you tell it, and it then protects you from crossing them.
| Cap | Set it to | Why |
|---|---|---|
| Per day | Somewhat below your provider's daily limit | Leaves headroom for your normal email |
| Per minute | Optional, e.g. 30 | Avoids bursts that look like spam |
| Per second | Optional, e.g. 2 | Paces delivery on strict servers |
Example
Google Workspace allows about 2,000/day. Set per day 1,500, per minute 30. A campaign to 3,000 people then spreads across two days on its own, with nothing lost.
What happens when you save
Vecta immediately sends a real test email to prove the settings work, then records the result. A config is marked Healthy, Failing (with the exact error) or Untested. You can re-test any time from the SMTP configs page.
Your password is encrypted
It's encrypted with AES-256 before storage and never sent back to your browser. Editing a config shows a blank password field. Leave it blank to keep the existing one.
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