> ## Documentation Index > Fetch the complete documentation index at: https://www.spread.so/docs/llms.txt > Use this file to discover all available pages before exploring further. # Choose an Email Sending Method > Choose the right email sending method in Spread based on your goal. ## Overview In Spread, there are three email sending methods depending on the purpose and use case: **One-off Campaigns, Triggered Campaigns, and Sequences**. This page explains which situations each sending method is best suited for. The table below compares the email sending methods provided by Spread.\ If you are unsure which type of email to send, first check the method that matches your purpose.
Category One-off Campaigns Triggered Campaigns Sequences
Recipients Multiple leads Leads added to a list Individual leads
Sending method Sent once in a single batch Sent automatically when conditions are met Sent sequentially at set intervals
Purpose One-time marketing announcements Automated guidance for inbound responses Personal follow-up for sales
Typical examples Newsletters, event announcements Form response emails, sending introductory materials Cold emails, meeting proposals

## One-off Campaigns An one-off campaign sends **the same email to multiple leads in a list, once, at the same time**. * Sends an HTML-based marketing email to 50 or more recipients in a single send. * The email is sent only once and is not used to create additional sends or multi-step flows. However, for campaigns that have already been sent, automation conditions can be configured later based on lead open and click responses. * Commonly used when **the same message needs to be delivered to many leads as a one-time send**, such as newsletters, product updates, event announcements, or nurturing content.
## Triggered Campaigns A triggered campaign is a campaign in which a pre-written email is **sent automatically** when **a lead that meets specific conditions is generated**. * Each time a new lead is added to a list, an email is sent individually to that lead. * Emails can be sent immediately or configured to be sent after a set delay. * Commonly used as **automated emails for inbound responses**. * (e.g.) Sending an information email to someone who submitted a form * (e.g.) Sending introductory materials to someone who requested them * (e.g.) Sending an onboarding email immediately after signup
**One-off Campaigns vs Triggered Campaigns** An one-off campaign requires connecting a list and then manually clicking Send or setting a scheduled send time. In other words, the send timing is determined by the user. A triggered campaign, on the other hand, is activated after connecting a list and enabling it. From that point on, emails are automatically sent based on the configured conditions and timing whenever a lead is added to the list. If you only need to send an email once, an one-off campaign is appropriate. If you want to design the flow after lead entry as well, a triggered campaign is a better fit.
## Sequences A sequence is a follow-up email flow that continues over multiple steps to maintain a conversation with an individual lead. * Emails are sent sequentially at configured intervals, and automated sending stops immediately when a reply is received, allowing the owner to continue follow-up communication manually. * Sequences are suitable for the stage where an actual conversation begins, after a Campaign or Triggered Campaign. * Commonly used when **direct follow-up communication** is required for leads with confirmed interest. * (e.g.) Cold emails, sales meeting proposals, response-driving emails, or cases where multiple follow-ups are needed for a single person